To let everyone know I just hung up the phone with Mr David Vizard and we had a wonderful and long conversation. I had posted that in the past I had emailed him with no responses and I found out today that the email I was using was no longer in use because the gentleman who was handling that for David has passed away. So David actually took the time to look me up and reached out to me and we have each other's contact information now and had some great conversation today. I look forward to working with David on some future things.
Also, about the subscriber thing. You do you. Maybe you'll lose some, maybe you'll lose all of them but it doesn't matter. Your content is so good, people will keep watching it subscribed or not. I think you're on your way to hitting it big time.
I think the best way to handle this is to take two sealed GM crate engines (604, or whatever they’re called). The only mods allowed are a custom spec’d cam by each contender, and head porting work done by each contender. Nothing else other than valve spring upgrades to support the selected cam. Then, a dyno battle royale where the winner takes all bragging rights.
One more caveat….Eric is allowed to enlist the help of Warren Johnson if desired for his cam and cylinder head mods. DV will be limited to using his own cam program.
That would be spectacular. It is very feasible and I would pay good money to see it, but just keep it between Eric and DV. I would not miss a youtube episode of that for anything.
DV has floated that very same dog and pony show twice in the past. I know the DV/Mike Jones never happened and I don't think DV/RH did either. Just a bunch of wasted bandwidth
Bought a few of DV’s books years ago and learned quite a bit from them, however I noticed some shortcomings on the books on explaining some things. Fast forward to his UA-cam channel, there’s a lot more shortcomings apparent. I really like your content because you explain things well and you put things head to head vs beating around the bush
Warren Johnson didn't rely on a flowbench as much as most people think. He said that he has never seen one strapped in to a racing seat and go down track. Pro Stock is a whole different world finding a few more HP and torque.
Eric, I just want EVERYONE to know I've watched MORE dyno videos than ANYONE on UA-cam! What everyone else has watched is like a pimple compared to a full blown boil that I'm sporting. And yes, I'm going to have it lanced.
@@bw3506 AI is actually learning from synthetic data. Some models are even learning from world testing and simulations. Large models have already devoured all human data. Your statement is true however that’s also how the majority humans learn by consuming and thus spreading false information. When you search things in a search engine AI is primarily referencing available human information and serving it to you as cliffs notes. Don’t mock AI as the models available today are already intellectually superior then yourself in every way. Not an expert at one thing but every topic. Today it already has the ability to eradicate nearly every American job, including blue color jobs through efficiency processes and new gen automation. The only thing holding it back is implementation. When it comes to things like engines it will certainly prove superior to human engineering, especially when confined with generative design principles. It will simulate and test infinite design principles and apply both mathematical and scientific principles not thought of buy humans do to the restraints we impose on ourselves. We are influenced by the way we traditionally do things and AI is not. Cam lob design will look radically different, head ports will resemble nothing like todays and the intake manifolds will look like organic creatures or tech from an alien planet. AI has already been designing ports that increase efficiency by 180% over traditional designs. These ports are similar to a head port. The AI designed ports actually break up the ports into multiple runners, shapes and incorporate things resembling human tongues. The human mind would never ever have thought of these designs. An AI designed top end will easily flow 150% to 180% better. Cam love profiles will be interesting, even AI designed Rods will be drastically lighter and infinitely stronger with organic looks. The choke point will be man’s ability to manufacture these concepts with most requiring additive manufacturing techniques (which will also advance thanks to AI).
Educating the public is exactly what DV has been doing for years since 1965. He’s 81 years old guys. A great deal of his research (it is by all definitions research) has set the foundation for modern automotive machining and assembly. He’s educated tens of thousands of inspiring Motorsports enthusiasts, racers and industry leaders. David was sharing information before we’ve had the internet puking it into everyone’s lap. It’s perfectly acceptable to be skeptical of some claims while by an 81 year old with 50 years of experience embellishes some. He’s earned that right. Or at least the right to be forgiven. Much of DV’s information was accurate for the time and was valuable information for many. His statements didn’t resemble arrogance so much as these statements do. Let’s be honest your no Vick Hill, Durham, Clements, Cornet, Draime Randy Dorton, Yates, Kieth Black or Noonan. Let’s remember our role while criticizing others. We have the right to disagree with opinions and even data. Data isn’t conclusive either until its been replicated with redundancy and peer reviewed. That’s just how science works. Now I watch all your videos for one reason and one reason only. I respect everyone’s level of experience and wish to learn as much as possible. But this childish shιτ and online high school girl nonsense by everyone (so called professionals) is embarrassing. It resembles politics for some reason and reminds me that human has yet to evolve cognitively enough for the internet.
Eric, you have a great channel and are obviously very talented. I regularly watch your videos and am a new subscriber ( I didn't realize I wasn't subscribed). I can understand why you question some of David Vizard's claims (he does come off kinda arrogant at times). However I do believe he is legit and I believe it could be mutually beneficial if you would contact him directly and pick each others brains a bit. I think both of you really stand up guys and would love to see you two work together on some kind of project!
I worked for a company that bought industrial engines from GM and Ford. We dynoed every one, 5 dynos running 2 shifts and we built 100,000 engines per year for a couple of years. Our competitor dynoed the same engines and sold 40% more engines than we did. Any one of those dyno operators could rightly claim they have "dynoed" more engines than DV or just about anybody else. Dynoing an engine is one thing, doing true R&D is another. As you said, there's always someone out there that's done more than you have but that alone doesn't guarantee their results are better than yours or someone else's. My advice.......let it go!😅
I like DV, he has some interesting perspectives on certain topics. My issue with him is that in a 30 min video he spends half of it bragging about himself and then another 10 going round and round in circles on the topic.
Exactly!! Bragging, ego, talking in circles... By the time he gets to the point, or how to, of whatever the topic is, you're in for 30 minutes. When it could have been expressed in 5 minutes. He does do good work, but so does Eric, they just go about different ways of doing things. And you too Mr nightwrencher. I watched plenty of your videos too.
My hat is off you Eric. Keep on doing what you've been doing. I've learned a great deal about porting from your videos. I'm gen X so I also read DV's books growing up and I used his information as a learning tool as well as others. I really respect both of you and just take things that happen with a grain of salt. All of us gearheads are a small group in this world so we need to stick together.
DV may be a very smart guy but I'll never know. I've never been able to watch one of his videos all of the way through. Just a few minutes in and his arrogance starts shining through. I've heard the wind blow before.
Funny thing about life: some of the better lessons I picked up were from difficult people. One such day was a golf outing with a random group. The guy talked so much smack, and was generally abrasive, his co-worker who bet something before arrival just left on the third hole and went home. 4 was now 3. But this guy could putt: probably 50% at 30 feet on greens that were grainy, difficult reads, and it was like clockwork. So he wants a wager on the back 9, and ok... I played better just because of pressure, but his putter won by 2. The experience was not groundbreaking but it later lead me to try something in reaching for consistency seeing improvements were needed: I bought a left handed putter and played with it exclusively for 6 months. Outcome? Grip pressure problem solved - went back right handed and was 3 putts better each round, typically. And partly because of an arrogant but very capable opponent. But also, Lee Trevino was right: there is no wrong way to putt.
I wont try to prove your point for ya, or DV's for that matter, but my comment is this... I've been in person to several NASCAR shops and have been to several NHRA shops and never once was I in a NASCAR shop (Bill Ellitotts multiple times by the way) when the Dyno Room wasn't humming away and in some shops there were two and sometimes both were running. The NHRA Pro-Stock team's shops I've been in were 100% running the dyno every single time I walked through the door. Now, I do have respect for all the DV has done and certainly he's a smart guy who has contributed a great deal. But that comment of I've made more dyno runs, or have more dyno time that anyone else is not something you can say with a straight face. Just the OEM companies alone have more dyno time than any single engine builder, race or otherwise. Throw into that mix the racing industry and there is 1000 more, toss the F1, NASCAR, NHRA and you're bound to find a few hundred more with more time on the dyno than DV. Look, I like the guy, he's creative, he's found things that many never ever find, but it's not like the entire world of automotive engine improvement can be boiled down to his cam program. There is NO one guy who knows it all or something that nobody else will ever find out on their own. Short of offending DV for his comments I can promise that no matter DV's age and the total accumulated dyno time he has spent he won't surpass Everyone and what does it matter if he did or didn't. There is simply NO WAY to prove such a comment that "He's had more dyno time than anyone else". You want a name or two that I would sa are above DV in the top 10 of ONE GUY ENGINE BUILDERS, not mfgs or massive budget race teams, they would be Bill Glidden and Gale Banks... Either of those two would have more dyno time than you'd think would be possible, but neither of one of them would/would've told you they had more dyno time than anyone else... They might say They wished they had more.... When the NA guys from multiple sources can get VE well past 100%, in the case of NASCAR and NHRA Pro-Stock well past 120%, then they've spent their lives in the dyno rooms, end of story.... Looking forward to the head dyno information when you get finished... Thanks for the good channel and the honest approach...
As a huge DV fan I have to admit that DV is old and living on the past accomplishments. I kind of listen to him on UA-cam, but have pretty much wondered away. If he wasn't so full of himself his videos would be better. I've read and studied his stuff for years and I will have to say I've learned a ton, but for every nugget you have to listen to hours of B#^%@* to get anything other than what is already in his books. Every video almost is a reiteration of something in a book he wrote 20 years ago. FACE IT DV YOU'RE OVER THE HILL. Eric don't bother yourself with his hot air, it's kind of the only way he can stay in the lime light. Just keep on with the very informative videos that you do so well.
Please don't be too harsh on a 82 yr old man who has had brain surgery and has a very poor memory ! Have respect ! I'm not being mean, I love your show ! God Bless !
I really enjoy that DV has brought in other channels like Unity Motorsports Garage, UTG, Charles Servedio. He's like my British Hot Rodding Grandpa and I dig his channel for that. I think he has a solid knowledge and craftsman base. I like your channel as well, Eric. Part of the reason I went out an got an old S10 to build some engine combos for. I also wonder if you may work a little too hard and are alone working too much to think about this stuff and get upset over it. I am guilty of the same thing. We all have to start somewhere and while I totally love your hard data approach, some guys are still farting around with 882 heads (and yes, that group needs to come to jesus and realize as I did that aluminum heads are where it is at). The racing world is full of conjecture, old wives tale tech, and people who know. That said---I'd love to see a meetup with DV. Maybe take him up on his offer.
@@hollowell427 at the end of the day, building anything takes energy and time. And mission creep on any project is a reality of projects. For some reason guys have a magical ability to turn a stock type hop-up rebuild project into a racing engine in no time at all. I think the 318 project was a distinct victim of that.
Hot rod and every other magazine sold us for years on what was the best. Some of this testing disagrees with articles we thought for less daxt for decades. The cam companies and product companies pushed their products and car magazines pushed it like a drug. It’s always about sales. Without selling heads or head porting or any service or books he doesn’t eat and pay his bills. But With Eric Weingartner at least we have some numbers and dyno proof of what we get. No body twisted my arm to buy many of the dyno books. But these numbers will help me build a serious high rpm 350 cid small block. I’m sold on the shaft rockers for sure. Thanks Eric I will keep watching and learning.
DV has great formulas for building max average hp/tq sbc street combinations. Given a 10.5:1 355-406 on pump 93 with 250-300cfm heads, a 4500-6500rpm range, his ideas work very well. Made many strong street car combinations with his observations/combinations. It was great information way back when. Nowdays, dv has no dyno, and is trying to apply "thousands of dyno tests from 1985" to today.I bought all a of his books, then i bought a dynojet.
@@kylemilligan752 I have access to 2 md800s and a super flow engine dyno. Funny I have been using them since 2002 when needed. At the end of the day it's just a tuning tool. Track times, mph, bsfc, and reading plugs. Since the mid 90s. Dynojets sell parts Kyle
@@vortecturbo Alright! Now we're getting somewhere! Another dyno guy! A year or 2 ago, I asked DV (on UA-cam) what the best Intake centerline angle was for his usual 108lsa SBC cam suggestions. He said they are normally ground 4 degrees advanced. Math says that is a 104 intake centerline. So, apparently a 108 LSA with a 104 intake centerline which math says 112 exhaust centerline must be ideal? Of course this is given a 355ish, 2.02/1.6, 10.5:1cr deal, from the stack of DV's books I've bought.Given a 4500-6500 355 SBC, a 250-275ish cfm intake port, built for the max average hp/tq. Absolutely. With a performer rpm, or vic Jr, it gets a street SBC guy into the hero class status amongst other SBC guys from 1995. Guess what? It's 2024.
@@vortecturbo with some dyno R&D you will see the intake centerline makes a substantial shift in the hp/tq curves. Test from 98intake centerline to 120 icl. Then play with the exhaust centerline, and you'll see it's pretty insensitive as it gets close to ideal. Then you arrive at a LSA. Starting with a predetermined LSA, is the tail wagging the dog
I love your channel Eric. I have watched several of DV'S videos and the more I watched them the more I feel like you do. I think he has SOME great wisdom, BUT as you said here, I don't believe for a second that his advices and knowledge are above so many like Warren Johnson, Greg Anderson, Bob Glidden, and so many others. I'm just a hobbyist, and do a lot of "Old Skool" porting for others, because I have no access to a flow bench. But after finding your channel a few short months ago, I have learned a lot about the rights and wrongs and some subtle indifferences. Keep up the great work so I can keep learning.
I saw a video DV put out years ago about tunnel rams. I listened to it for information but he said basically nothing. It was just a bunch of words with no substance. Same thing from every video I followed up from him. Gave up then and there. May aswell be a politician the way he puts out words with no substance.
I've watched enough of DV videos to know that DV is a bit of a blowhard and is trying to sell his products. nothing wrong with that. not saying he doesn't know anything. most of his testing was done long ago for cam companies. I'm sure DV knows a lot, but from what era. DV doesn't have the budget to test large scale on his own. the high-end guys are never going to share what took them millions to learn. why would they give it away. don't take the bait eric. wouldn't a dyno competition be a good way to generate viewership? be a good episode of engine masters.
DV's proclamations over the last year are actually kind of sad to watch. He had a decent amount of respect from people who actually matter and are knowledgeable. But it has gotten bad, especially the comments about WJ. I mean he's not even close to the same arena and proven accomplishments as the professor. Again, sad.
Eric you do what you think is right yes WJ and dv are on two completely different avenues. I look at dv stuff as well as his books for what they are a means to make a living yeat I as a young man back when we didn't have internet or means to learn how to port heads he'll from the same era you are when it was a big secret nobody told.you shit period especially if they were in the field yes I have learned a ton from you I have learned from Frankenstein Darin Morgan Haase ,dv excexc . Now whith that being said you two keyboard commandos better put a stop to this shit or you both will be putting your noses in the corner in time out lol
Well I reckon you handled the situation pretty well, it’s unusual to find someone disagree without resorting to insults. I read DV’s books years ago and always respected the man but the dramatic bragging in every introduction gets a bit punishing. Keep up good work mate.
Only thing I'd say is Eric says he doesn't port cast except videos on cast heads so that might have something to do with it. If your interested in cast iron heads your going to most likely watch those videos and I know some he doesn't say he doesn't port cast iron🤷
im with you Eric, DV seems to make alot of assumptions and is a littke full of himself. The humble guys are always smartest because they are willing to listen
As a hobbyist, I've learned so much from your videos over the past 3-4 years. Now, you're backing it all up with Dyno time !.. and taking the time to share your findings with us. Freaking Awesome !! .. I've also read DV's books and found them insightful as well. Just keep doing what you do brother.. Your effort is very much appreciated. 🍻
Hope you could hang out with DV. Maybe your viewers or another UA-cam could pay for it or start a go fund me. Neither of you have anything too prove to me. Learn from both of you. A collaboration would certainly help the sport.
Eric, I think you're an honest, no BS man and a TRUTH detector. And you always try to call it the best way as you see it objectively. That's why I drove 12 hours to your shop with my 2 sets of AFR heads for a marine app a few years ago. Just keep doing what you have been doing ----- looking forward and learning and growing. Onward and upward ⚔️👍
Im with you. 100% correct. I'm not at odds with anyone, I just don't think that anyone knows it all. If someone would quit watching videos from you, it is arrogant and only displays that people are emotionally attached to beliefs not truth.
My dad can beat your dad😡 My dads got a cooler nickname😡 This is getting old. Aren't you all professionals? Remember, opinions are like assholes, we all have one. DV is DV, you are you...let it go. Why cause division among gear heads? Don't we have enough shit to deal with in real life?
DV is either not as smart as he thinks he is or impossible to work with. If he was as good as he believes he is and capable of making power, he would have been a well known engine builder not author
He believes he is one of only four people in the world that knows how to pick a cam yet hasn't put this extraordinary superhuman talent to use and started a cam company. Instead he chased the limelight with books and lectures. I would love it if he had of started a cam company because he would soon come to learn a vast majority of people buying cams for their street going cars lean to drivability over dyno numbers. All his proclaimed squillion of dyno test have shown is what is common knowledge that tighter lobe separation boost midrange torque. Maybe this wasn't as well known in the 70's and 80's as what it is today.
Eric thanks for the video, I like the way you share data , I’ve watched a tone of DV videos , he goes on and on and on …. Yeah keeping doing what you do here in Australian 👌🇦🇺
I like that you mention the infographics. Anything on the yellowish/orange (IOP and later) is Stan's handiwork. Stan is a pretty cool dude but he also has a vested interest in making the images show what DV would like to portray. The cam thing blows my mind. I'd wager that just during his time with Gibbs, Jason Line tested more cams than David did in his entire career.
Alot of the engine simulators and programs are based on the SAE papers written about that subject. Gordon blair probably has the best written books hes more known for 2 strokes but has done 4 strokes as well. Having worked with many engineers and having had 30 plus engine dynos running 24/7 at the Livonia shop I can say Ive done alot of testing. But I know people that Im confident have done more than David, and Warren put together. Ill say to you what some of the best said to me. Horsepower is easy its emissions and all the other issues on top of that that bring the challenge.
Brother that's the truth, i think with et cylinder head, we went through a bunch of cams, valvejobs, to get a emissions legal ls1 package that would not kill cats, pass a im240 test and make 460hp to the tire with headers etc. I think it took us 6 months to iron it all out. A very popular car tuner sold thet package for years. I've never been a big believer in vizard, he's always seemed kinda eager to treat every engine like a 1955 cast iron headed SBC. Don't even get me started on his cam software, ugh.
Me being a Ford guy… Bob Glidden I’m sure he did a ton of R&D. You’re right, they don’t have time to write books. Warren is definitely one…. Darin is a super sharp guy. I see him on Facebook from time to time. You’re right, lot of them are not on line. Anyways I enjoy your videos
I am looking forward to hearing about the Promaxx 375 heads. I will be putting together a 572 and am looking for a decent head to put on them. Eric, thanks for all the effort in sharing info with us.
We have a fellow who used to have a dyno, and did lots of tests. Has lots of opinions, results from those tests, and formulas based on observations with old obsolete parts. Yep
The more you learn, the more you start realizing how little you know. That is why most really knowledgeable people are very humble guys. Keep on keepin´ on Eric. I´ve learnt a lot from you. I really enjoy most of what you put up on UA-cam. Not porting cast iron? I think you will... eventually 😜
DV's opinion carries no weight today. Apparently he has no dyno today. Presents himself as an angry old guy who is absolutely correct, and should never be questioned.
Ive been reading most the big names since before the internet. I don't totally dismiss DV but I've found him as much as a salesman than anything else. Im not saying he doesn't know his stuff but he is a ledgeon in his own mind. You are 1 of the few that backs up what he says with actual numbers. DV will throw out numbers now and then but to get lengths to talk around actual facts. Most of DV's books and videos leaves me with more questions than answers.
There's no reason to totally dismiss him per se. The problem is that he does not evolve and he is too full of himself. I spoke about an intake with Morgan about a year ago, and unlike Vizard, Darin was really up front about the fact that some of the stuff he had designed and said in the past, did not fit now. We were talking tunnel ram manifolds. Vizard is the complete opposite. No humility, and according to him, nothing has changed anywhere.
I enjoy learning from both EW and DV. Will continue to do so. I wish I could go back and change how I acted at times in my life too. We've all had our moments of too much pride or whatever it was that we let get the better of us at times.
Hey Eric Everyone has an option on all this different racing technology. Till you personally sit down with each of these different individuals with all different opinions at the end of the day you personally don’t know what they do. Everyone of these individuals have egos and think they’re the best at what they do in this race industry. If you find something that you can learned or can use from these individuals than do that and leave it at that point. I will tell you this from life’s experience as a 61 year old, you’re dead wrong about having solid technical information and data that works and the automotive industry will pass on it. There are hundreds if not thousands of technologies that were valid or cutting edge that was passed on because it would upset a certain program. Check out automotive inventions history and you will see how fair behind we are with technology. So don’t be so critical on some of these individuals that have a big ego. Just do your part and learn what you can to better yourself and win some races. At the end of the day everyone had teachers they didn’t like but still learned something. Who knows in 20 years some kid might prove Einstein was wrong! Take care and don’t take this personal Cecil Miller
It seams like you have to watch 20 Vizard videos to get to the point, whereas Weingartner can get to the point in two videos. And Eric clearly explain the work being performed on the cylinder head. And shows all the data on the performance potential of the cylinder heads.
So i was a gm linetech for 25+ plus years ima retired now an folks ask me can u work on my car i tell them no i cant ... i dont know anything about the newer stuff .... older guys have issues admitting they cant or arent what they once were ..
Of all the channels that talk about porting, you've shown me more real world applicable knowledge. Not to discount anyone, but you've shown methods, math, theory, applications, general porting rules and what happens when you transgress these rules. Appreciate what you do Eric
100%... I've learned SO much from Eric over the last 3-4 yrs.. Super valuable info. I very much appreciate his efforts in sharing his findings with us.
I just found your channel from OMG and this is the first video I watched because I saw DV and I figured it was about David Vizard. I’m really new and green when it comes to this motor building but really interested in learning, I started out watching David and even with my limited knowledge realized quickly he was full of himself and more interested in telling us he has more knowledge then anyone else and using brain surgery for sympathy from viewers and trying to sell 30 year old books. I’m here and was there to learn. Hope to learn some useful things here.
What I’ve learned in my 30 years of racing motors is One size does not fit all! Hell, I only watch these for a baseline of thought. Truth is every motor is gonna respond differently to different things because of the physical make up of it.
Eric, I've been in this game almost 25 years. I liked you from the first video I caught by accident. When you're around as many people for this long, separating the "bull" from the "$*!t" gets easy. I saw through his marketing years ago. Not to mention his material and presentation makes me wanna gaze into my 🔮..... Anyway, you made a legit stand and that's respectable. I wish you made a ton more from UA-cam. Maybe short tutorials of your work and techniques would peak more interest. Then again that takes time away from the job altogether. I couldn't do both....man I know i couldn't. Respect!
I bought a DV book when I was 17. At 18 I was building small blocks that were among the fastest door cars at the drag strip. I started porting heads and building race engines with nothing more than my own thoughts and the knowledge I gained from DV books. Back then he was pretty much it. Other books I had were BS. I'm always curious what other have to discuss and critical to none. I have enjoyed eyeing what I could see in pro race engine shops and as always, learn something. I truly admire DV because I have had measurable results by learning from him . I find anyone sharing information and tech to be of great credibility. Keep on keeping on yall 😊
DV lost credibility with me on a video he was doing about racing in the BTCC, and he went into great detail about a story that involved him and Win Percy, DV claiming this happened and that happened in this race, how Win Percy crashed trying to keep up and DV got a podium position etc etc, i did a deep dive on that season of BTCC and found that not once in that season, did anything he state actually happen, i even went so far as to go through every season just in case he had his years mixed up, but no, noothing he said ever happened period. I know it seems petty but if you can be dishonest about that just to push a point you are trying to get across, where is the credibility.
I have watched a lot of DV videos, and you can see him struggle, due to his brain surgery due to no fault of his own. Dv seems to lash out sometimes, which may be due to his struggles, and he may take a comment as a personal attack. Having a UA-cam channel he needs to have a thicker skin. Mr. Weingartner I have watched your channel also and this was a very well balanced response, and as someone as mentioned in your comment section it would be nice if you two got together. As busy as you are, I really don't think that would happen currently. Keep up the good work.
I bought a dv book several years ago to find nothing but a collection of somewhat relevant stories about his accomplishment and very little actual content or real info on the subject matter.
EW , the worker, showing the product of hard work and getting results. DV , the politician , flap jawing about myth, sky faries and forever skirting the presentation of actual results by putting others down. His channel that professes to 'not take BS' should in that light cancel itself!
Internal combustion engines have so many variables, the mind can be endlessly challenged by all the ways of combining it. Having difference of opinion over it cannot be avoided, and what makes our hobby interesting is the bottomless well we all drink out of.
Oh dear. Well, engineers are generally not philosophers, that much I know. It helps to avoid the personal: talk about outcomes and causes, change & effect. If it looks like a problem is out there [waiting to be solved]... that's a good place for it to be with an analytical mind at the ready.
Live and learn Eric. Will continue to watch you. I have heard all kinds of opinions from all types of automotive experts. Take and leave what you want. I will continue to watch your channel. If someone's personality becomes toxic, I won't care what they know, they will be removed on my end of things.
Back in the 90s when I got ahold of his books it was a game changer compared to trying to build engines from catalog and magazine articles. It seems today he’s trying to stay relevant but can’t acknowledge the next generation has surpassed him. Sad to see… thanks for all the great content Eric!
I’ll say this knowing you are both probably way too busy to ever be free enough to make it happen, but Garrett Mitchell was asking for the opinions of his followers on things that need to be tested. It would be extremely cool to have a dyno shootout and then a track test with one car. Give all competitors an identical short block, have them use the same kind of heads ported their own way, same carb, and the camshaft of their choice. If Cleetus got on board to supply the car and do the filming it could really help any competitors grow their channel
Perception and Perspective are twisted through the lens of an Ego. As much as everyone doesn't want to admit, an Ego has a lot to answer for but won't accept responsibility for it. That means, we ALL speak bullshit, but will never see ourselves as speaking it. The point I want to share is, look past the BS. Learn to pick out the jems amongst the pebbles. No one is ever going to give a straight Google like answer. To learn their knowledge gained means that time needs to be spent getting to know the person. In this day in age, people are in that much of a hurry, this has gone from a chore to "can't be bothered." Which has gone full circle, back to an Ego problem.
I've always listened to the tone of how people say things. I have DV books, but watching his vids I was turned off. The people that have proven to have the best results tend to have humble personalities and will say things such as "what has worked for me" , "what I've found" "how I see it". Eric your tone is what makes me keep following you. DV's ego is too much for me.
DV has had brain surgery for something, he says it in most of his videos. Sucks. But his mind is nowhere close to what it was 20-30 years ago. Some of his science leaves me scratching my head, if it's that's good why wouldn't the OEM's buy the tech from him. Just truly sad
All cool friend. This social media thing can be informative or in your face. Yes we lean on brain folks like you and DV to move us forward in our search and if we're here for the search than we know the head butting. I look at this way EW + DV / time = more fun spent working on my stuff and waiting to "smoke" that Tesla. Thanks man. Oh ya Jag V12 project
i am on your side !! i follow his channel and have all his books ! seems very full of himself and always talk about his special cams !! never have i seen any proof !! with all of his supposed dyno tests he should at least show some of it !! i am on your side charge on
So sad to see and hear the negative comments. For the 99.9% of us, we try to sort through the information that those who have gone before us leave. DV has improved the knowledge of many, as you have earlier folks like Barney Navarro, Colin Campbell, Ed Pink, Dick Landy… it’s an endless list of generations of people brighter than us 99.9%. Hopefully we all can learn to separate wheat from chaff in our search for the important things.
Just because someone has done a lot of something doesn't mean a lot of it is the right way to do it. I like D.V. but have always listened with a grain of salt. E.W. doesn't seem to gloat to me,which I find refreshing.
I watch both channels and like them both for different reasons. What you and David having in common is that easily getting offended by the comments. If you're going to produce internet content, you're going to get the trolls , it's inevitable, try to block it out , you'll be happier. Keep up the great content, and I/we will continue to watch your channel.
Eric, you are very good at what you do. I find your video's technically well done and thought provoking. Don't let this stuff get under your skin. Let your testing and empiral data speak for itself. Ignore the noise and let the power of your engineering and research speak for itself.
Eric, you are similar to me in that sometimes I just have to say something even when I know I shouldn't. I've seen some good info from Vizard, but whenever I see so many "non experts" that are avid fans of someone, I'm automatically suspicious as to whether they're legit or more of a "sales" expert. My litmus test is, how many people are running David Vizard engines or heads? I know he's older now, so probably isn't building as much, but how many ever did? I don't recall him ever being mentioned as anyone that built top stuff or was a tech resource for any winning racers. And no way he's dyno tested more than loads of race engine builders, whose JOB it is to find that extra couple of HP or torque or move the power to a different RPM, etc. Imagine the thousands of hours of dyno testing that NASCAR builders did to build plate engines, for example. It's simple facts, data and logic. What race teams are using this guy's methods or info to build with? Any?
A majority of his claim to fame was a lot of early work he did in the 4 cylinder world across the pond. I'm not trying to take anything away from him but the kind of stuff that he was successful at would be equivalent to someone who's the best player in the G-League in the NBA. One step above being the tallest midget. He knows his stuff, but he only knows a lot about his stuff, if that makes sense.
@@Carl_Jr Yep, I get it. He's not unknowledgeable at all. But I don't think he's remotely some irrefutable guru, either. And when I see so many guys who think that tuning a carb is bolting it on and setting the idle just worshiping the guy, my BS detector goes off. Then I want to know what he's built. I'm sure he's built some stuff, way more than the average racer, but to put him on the level of some of these race engine geniuses....I don't think so. If he was all some folks think he is, at least SOME of the well-known builders would refer to him and have some praise...and I don't see that. He's a great writer and appeals to the less knowledgeable.
It’s all in the data! That’s why I follow and buy from you, Big “E”! I’m still working on getting the car together. Like you say, time is short. But I truly believe that this is going to be the baddest m’fr I’ve ever built. I can’t wait to send you videos! Take care, and continue to follow your heart!
Bro name one thing he (DV) has accomplished in racing. People who say that they are the best are usually just postering to hide what they don’t know. He is accomplished of having theories and being able to put them down on paper. Not much more than that since I’ve been in the industry (30 years) And he talked shit on Darrin too. Good on you for doing the good work, it might not have changed the guys mind who posted it but surely ruffled some feathers.
In the '70s, '80s and 90s it's not hard for me to believe he did a lot of testing many things. Since the 2000s, I think he's trailed off a lot. I grew up reading his stuff, and it has served me well. Having said all that, I think technology as of late may have passed him by a bit.
Agree. We have all learnt something from his books just as we have all learnt something from John Batcheal and other authors. What's happened over time though is the natural advancement in one field has dragged others along. The advancement in spring technology has allowed cam lobe designers more freedom and better usage of the head ports being developed today with improved valve motion. That's driven combustion chamber design and then pistons and rings have caught up to seal the whole deal. To believe 1980's testing of engines will be replicated with today's technology is naïve. You won't get in trouble using concepts derived from those test but you would fall short. Who would use Comp Magnum lobes these days for a max effort deal?
People have got to realize there is nobody who has all the answers for any given topic. The goal as a consumer of information is to find the real good information out of the blob someone gives. Anyone who is sitting on a specific side in this kind of thing is just doing the same behavior as a kid in kindergarten arguing that their dad is the strongest dad. Keep the info rolling sir, many of us that rarely comment are the most appreciative of the information and work being done by the collective hot rodding community.
I’ve enjoyed DVs videos but I can’t watch them too much because he drags the videos out forever. I also know he’s had a brain issue that I’m sure causes some issues. I also don’t think DV does really big bad motors on the level many other builders have. I have his carb book and it’s great. I know he’s developed combos for every odd and unusual engine there ever was. That also doesn’t make him a better head guy than Eric and SR or Morgan etc. I was in a machine shop recently where the owner was bad mouthing a certain dyno operator in Ok. I quickly called BS and brought up the fact that this guy doesn’t have anything to ever say good about anyone.
To let everyone know I just hung up the phone with Mr David Vizard and we had a wonderful and long conversation. I had posted that in the past I had emailed him with no responses and I found out today that the email I was using was no longer in use because the gentleman who was handling that for David has passed away.
So David actually took the time to look me up and reached out to me and we have each other's contact information now and had some great conversation today. I look forward to working with David on some future things.
Maybe you and DV should get together and swap notes. Maybe BOTH of you could teach each other something.
Also, about the subscriber thing. You do you. Maybe you'll lose some, maybe you'll lose all of them but it doesn't matter. Your content is so good, people will keep watching it subscribed or not. I think you're on your way to hitting it big time.
NightWrencher!
I think the best way to handle this is to take two sealed GM crate engines (604, or whatever they’re called). The only mods allowed are a custom spec’d cam by each contender, and head porting work done by each contender. Nothing else other than valve spring upgrades to support the selected cam. Then, a dyno battle royale where the winner takes all bragging rights.
One more caveat….Eric is allowed to enlist the help of Warren Johnson if desired for his cam and cylinder head mods. DV will be limited to using his own cam program.
That would be spectacular. It is very feasible and I would pay good money to see it, but just keep it between Eric and DV. I would not miss a youtube episode of that for anything.
DV has floated that very same dog and pony show twice in the past. I know the DV/Mike Jones never happened and I don't think DV/RH did either. Just a bunch of wasted bandwidth
Who is RH?
Bought a few of DV’s books years ago and learned quite a bit from them, however I noticed some shortcomings on the books on explaining some things. Fast forward to his UA-cam channel, there’s a lot more shortcomings apparent. I really like your content because you explain things well and you put things head to head vs beating around the bush
Thank you.
I've learned this in my 69 years, worry about your business, not other people business, be humble my friend......no one has died!
Warren Johnson didn't rely on a flowbench as much as most people think. He said that he has never seen one strapped in to a racing seat and go down track. Pro Stock is a whole different world finding a few more HP and torque.
That because he had AFR & valley head service doing his heads in the early day
Eric, I just want EVERYONE to know I've watched MORE dyno videos than ANYONE on UA-cam! What everyone else has watched is like a pimple compared to a full blown boil that I'm sporting. And yes, I'm going to have it lanced.
Oh yeah well we just called Dr.Pimple Popper and she’ll be right there 🤣
There's thousands of us that feel every single word you just said..... educating the public is a almost impossible task,
100% agree. There is so much information on the internet, and so little of it is actually true.
@@jonelford Yep 100%. You know what is really scary? All that is what AI learns from. Then people trust what AI says. Isn't that just genius 🤣
@@bw3506 AI is actually learning from synthetic data. Some models are even learning from world testing and simulations. Large models have already devoured all human data. Your statement is true however that’s also how the majority humans learn by consuming and thus spreading false information. When you search things in a search engine AI is primarily referencing available human information and serving it to you as cliffs notes. Don’t mock AI as the models available today are already intellectually superior then yourself in every way. Not an expert at one thing but every topic. Today it already has the ability to eradicate nearly every American job, including blue color jobs through efficiency processes and new gen automation. The only thing holding it back is implementation. When it comes to things like engines it will certainly prove superior to human engineering, especially when confined with generative design principles. It will simulate and test infinite design principles and apply both mathematical and scientific principles not thought of buy humans do to the restraints we impose on ourselves. We are influenced by the way we traditionally do things and AI is not. Cam lob design will look radically different, head ports will resemble nothing like todays and the intake manifolds will look like organic creatures or tech from an alien planet. AI has already been designing ports that increase efficiency by 180% over traditional designs. These ports are similar to a head port. The AI designed ports actually break up the ports into multiple runners, shapes and incorporate things resembling human tongues. The human mind would never ever have thought of these designs. An AI designed top end will easily flow 150% to 180% better. Cam love profiles will be interesting, even AI designed Rods will be drastically lighter and infinitely stronger with organic looks. The choke point will be man’s ability to manufacture these concepts with most requiring additive manufacturing techniques (which will also advance thanks to AI).
Educating the public is exactly what DV has been doing for years since 1965. He’s 81 years old guys. A great deal of his research (it is by all definitions research) has set the foundation for modern automotive machining and assembly. He’s educated tens of thousands of inspiring Motorsports enthusiasts, racers and industry leaders. David was sharing information before we’ve had the internet puking it into everyone’s lap. It’s perfectly acceptable to be skeptical of some claims while by an 81 year old with 50 years of experience embellishes some. He’s earned that right. Or at least the right to be forgiven. Much of DV’s information was accurate for the time and was valuable information for many. His statements didn’t resemble arrogance so much as these statements do. Let’s be honest your no Vick Hill, Durham, Clements, Cornet, Draime Randy Dorton, Yates, Kieth Black or Noonan. Let’s remember our role while criticizing others. We have the right to disagree with opinions and even data. Data isn’t conclusive either until its been replicated with redundancy and peer reviewed. That’s just how science works. Now I watch all your videos for one reason and one reason only. I respect everyone’s level of experience and wish to learn as much as possible. But this childish shιτ and online high school girl nonsense by everyone (so called professionals) is embarrassing. It resembles politics for some reason and reminds me that human has yet to evolve cognitively enough for the internet.
Eric, you have a great channel and are obviously very talented. I regularly watch your videos and am a new subscriber ( I didn't realize I wasn't subscribed). I can understand why you question some of David Vizard's claims (he does come off kinda arrogant at times). However I do believe he is legit and I believe it could be mutually beneficial if you would contact him directly and pick each others brains a bit. I think both of you really stand up guys and would love to see you two work together on some kind of project!
I worked for a company that bought industrial engines from GM and Ford. We dynoed every one, 5 dynos running 2 shifts and we built 100,000 engines per year for a couple of years. Our competitor dynoed the same engines and sold 40% more engines than we did. Any one of those dyno operators could rightly claim they have "dynoed" more engines than DV or just about anybody else. Dynoing an engine is one thing, doing true R&D is another. As you said, there's always someone out there that's done more than you have but that alone doesn't guarantee their results are better than yours or someone else's. My advice.......let it go!😅
I like DV, he has some interesting perspectives on certain topics. My issue with him is that in a 30 min video he spends half of it bragging about himself and then another 10 going round and round in circles on the topic.
Exactly!! Bragging, ego, talking in circles... By the time he gets to the point, or how to, of whatever the topic is, you're in for 30 minutes. When it could have been expressed in 5 minutes. He does do good work, but so does Eric, they just go about different ways of doing things. And you too Mr nightwrencher. I watched plenty of your videos too.
This kind of stuff really breaks my heart. I'm a big fan of both of you.
Nice video Eric.
Very enlightening.
Keep testing.
I appreciate your humble attitude and fair honest approach.
Have a great day.👍👍
My hat is off you Eric. Keep on doing what you've been doing. I've learned a great deal about porting from your videos. I'm gen X so I also read DV's books growing up and I used his information as a learning tool as well as others. I really respect both of you and just take things that happen with a grain of salt.
All of us gearheads are a small group in this world so we need to stick together.
DV is a has been.
You're right. You should have left it alone.
All is prevented by not making outlandish claims. No matter how good you are, theres someone better.
A humble genius will have the greatest audience
DV may be a very smart guy but I'll never know. I've never been able to watch one of his videos all of the way through. Just a few minutes in and his arrogance starts shining through. I've heard the wind blow before.
Funny thing about life: some of the better lessons I picked up were from difficult people. One such day was a golf outing with a random group. The guy talked so much smack, and was generally abrasive, his co-worker who bet something before arrival just left on the third hole and went home. 4 was now 3. But this guy could putt: probably 50% at 30 feet on greens that were grainy, difficult reads, and it was like clockwork. So he wants a wager on the back 9, and ok... I played better just because of pressure, but his putter won by 2. The experience was not groundbreaking but it later lead me to try something in reaching for consistency seeing improvements were needed: I bought a left handed putter and played with it exclusively for 6 months. Outcome? Grip pressure problem solved - went back right handed and was 3 putts better each round, typically. And partly because of an arrogant but very capable opponent. But also, Lee Trevino was right: there is no wrong way to putt.
I wont try to prove your point for ya, or DV's for that matter, but my comment is this... I've been in person to several NASCAR shops and have been to several NHRA shops and never once was I in a NASCAR shop (Bill Ellitotts multiple times by the way) when the Dyno Room wasn't humming away and in some shops there were two and sometimes both were running. The NHRA Pro-Stock team's shops I've been in were 100% running the dyno every single time I walked through the door. Now, I do have respect for all the DV has done and certainly he's a smart guy who has contributed a great deal. But that comment of I've made more dyno runs, or have more dyno time that anyone else is not something you can say with a straight face. Just the OEM companies alone have more dyno time than any single engine builder, race or otherwise. Throw into that mix the racing industry and there is 1000 more, toss the F1, NASCAR, NHRA and you're bound to find a few hundred more with more time on the dyno than DV. Look, I like the guy, he's creative, he's found things that many never ever find, but it's not like the entire world of automotive engine improvement can be boiled down to his cam program. There is NO one guy who knows it all or something that nobody else will ever find out on their own. Short of offending DV for his comments I can promise that no matter DV's age and the total accumulated dyno time he has spent he won't surpass Everyone and what does it matter if he did or didn't. There is simply NO WAY to prove such a comment that "He's had more dyno time than anyone else". You want a name or two that I would sa are above DV in the top 10 of ONE GUY ENGINE BUILDERS, not mfgs or massive budget race teams, they would be Bill Glidden and Gale Banks... Either of those two would have more dyno time than you'd think would be possible, but neither of one of them would/would've told you they had more dyno time than anyone else... They might say They wished they had more.... When the NA guys from multiple sources can get VE well past 100%, in the case of NASCAR and NHRA Pro-Stock well past 120%, then they've spent their lives in the dyno rooms, end of story.... Looking forward to the head dyno information when you get finished... Thanks for the good channel and the honest approach...
Gale Banks is like DV
As a huge DV fan I have to admit that DV is old and living on the past accomplishments. I kind of listen to him on UA-cam, but have pretty much wondered away. If he wasn't so full of himself his videos would be better. I've read and studied his stuff for years and I will have to say I've learned a ton, but for every nugget you have to listen to hours of B#^%@* to get anything other than what is already in his books. Every video almost is a reiteration of something in a book he wrote 20 years ago. FACE IT DV YOU'RE OVER THE HILL. Eric don't bother yourself with his hot air, it's kind of the only way he can stay in the lime light. Just keep on with the very informative videos that you do so well.
Please don't be too harsh on a 82 yr old man who has had brain surgery and has a very poor memory ! Have respect ! I'm not being mean, I love your show ! God Bless !
This is a good point. He has definitely changed as the years went by and it's very sad to see.
I really enjoy that DV has brought in other channels like Unity Motorsports Garage, UTG, Charles Servedio. He's like my British Hot Rodding Grandpa and I dig his channel for that. I think he has a solid knowledge and craftsman base. I like your channel as well, Eric. Part of the reason I went out an got an old S10 to build some engine combos for. I also wonder if you may work a little too hard and are alone working too much to think about this stuff and get upset over it. I am guilty of the same thing. We all have to start somewhere and while I totally love your hard data approach, some guys are still farting around with 882 heads (and yes, that group needs to come to jesus and realize as I did that aluminum heads are where it is at). The racing world is full of conjecture, old wives tale tech, and people who know. That said---I'd love to see a meetup with DV. Maybe take him up on his offer.
DV threw UTG under the bus on the 318 project.
@@hollowell427 at the end of the day, building anything takes energy and time. And mission creep on any project is a reality of projects. For some reason guys have a magical ability to turn a stock type hop-up rebuild project into a racing engine in no time at all. I think the 318 project was a distinct victim of that.
Hot rod and every other magazine sold us for years on what was the best. Some of this testing disagrees with articles we thought for less daxt for decades. The cam companies and product companies pushed their products and car magazines pushed it like a drug. It’s always about sales. Without selling heads or head porting or any service or books he doesn’t eat and pay his bills.
But With Eric Weingartner at least we have some numbers and dyno proof of what we get. No body twisted my arm to buy many of the dyno books. But these numbers will help me build a serious high rpm 350 cid small block. I’m sold on the shaft rockers for sure.
Thanks Eric I will keep watching and learning.
Thank you.
DV has great formulas for building max average hp/tq sbc street combinations. Given a 10.5:1 355-406 on pump 93 with 250-300cfm heads, a 4500-6500rpm range, his ideas work very well. Made many strong street car combinations with his observations/combinations. It was great information way back when. Nowdays, dv has no dyno, and is trying to apply "thousands of dyno tests from 1985" to today.I bought all a of his books, then i bought a dynojet.
First mistake was buying a dynojet
@@vortecturbo Please do tell everyone about your experience/hours on any form of dynamometer
@@kylemilligan752 I have access to 2 md800s and a super flow engine dyno. Funny I have been using them since 2002 when needed. At the end of the day it's just a tuning tool. Track times, mph, bsfc, and reading plugs. Since the mid 90s. Dynojets sell parts Kyle
@@vortecturbo Alright! Now we're getting somewhere! Another dyno guy! A year or 2 ago, I asked DV (on UA-cam) what the best Intake centerline angle was for his usual 108lsa SBC cam suggestions. He said they are normally ground 4 degrees advanced. Math says that is a 104 intake centerline. So, apparently a 108 LSA with a 104 intake centerline which math says 112 exhaust centerline must be ideal? Of course this is given a 355ish, 2.02/1.6, 10.5:1cr deal, from the stack of DV's books I've bought.Given a 4500-6500 355 SBC, a 250-275ish cfm intake port, built for the max average hp/tq. Absolutely. With a performer rpm, or vic Jr, it gets a street SBC guy into the hero class status amongst other SBC guys from 1995. Guess what? It's 2024.
@@vortecturbo with some dyno R&D you will see the intake centerline makes a substantial shift in the hp/tq curves. Test from 98intake centerline to 120 icl. Then play with the exhaust centerline, and you'll see it's pretty insensitive as it gets close to ideal. Then you arrive at a LSA. Starting with a predetermined LSA, is the tail wagging the dog
eric,dont let this stuff bother you.I watch you,morgan,vizard & chad spier and learn from all of you.there is no perfect way to do anything.
I love your channel Eric. I have watched several of DV'S videos and the more I watched them the more I feel like you do. I think he has SOME great wisdom, BUT as you said here, I don't believe for a second that his advices and knowledge are above so many like Warren Johnson, Greg Anderson, Bob Glidden, and so many others.
I'm just a hobbyist, and do a lot of "Old Skool" porting for others, because I have no access to a flow bench. But after finding your channel a few short months ago, I have learned a lot about the rights and wrongs and some subtle indifferences. Keep up the great work so I can keep learning.
Can't we all just get along?
I saw a video DV put out years ago about tunnel rams. I listened to it for information but he said basically nothing. It was just a bunch of words with no substance. Same thing from every video I followed up from him. Gave up then and there. May aswell be a politician the way he puts out words with no substance.
I've watched enough of DV videos to know that DV is a bit of a blowhard and is trying to sell his products. nothing wrong with that. not saying he doesn't know anything. most of his testing was done long ago for cam companies. I'm sure DV knows a lot, but from what era. DV doesn't have the budget to test large scale on his own. the high-end guys are never going to share what took them millions to learn. why would they give it away. don't take the bait eric.
wouldn't a dyno competition be a good way to generate viewership? be a good episode of engine masters.
They’ve had competitions.. DV took second to last at the race engine challenge…… the only engine he beat was one that blew up.
DV's proclamations over the last year are actually kind of sad to watch. He had a decent amount of respect from people who actually matter and are knowledgeable. But it has gotten bad, especially the comments about WJ. I mean he's not even close to the same arena and proven accomplishments as the professor. Again, sad.
Eric you do what you think is right yes WJ and dv are on two completely different avenues. I look at dv stuff as well as his books for what they are a means to make a living yeat I as a young man back when we didn't have internet or means to learn how to port heads he'll from the same era you are when it was a big secret nobody told.you shit period especially if they were in the field yes I have learned a ton from you I have learned from Frankenstein Darin Morgan Haase ,dv excexc . Now whith that being said you two keyboard commandos better put a stop to this shit or you both will be putting your noses in the corner in time out lol
I was going to say the same thing, I agree. Eric, keep up the good work!
The trolls got to you. You can't let them get under your skin.
What 😂😅😂😅😂😂
Old age and what it does to the mind is sad.
I always thought D V had a big head , he shoots his mouth off to much
Well I reckon you handled the situation pretty well, it’s unusual to find someone disagree without resorting to insults. I read DV’s books years ago and always respected the man but the dramatic bragging in every introduction gets a bit punishing. Keep up good work mate.
I bet if someone asked Eric Weingartner right now if he ported cast iron heads, he would forget all about DV. Lol
It's because you will spend more money buying drill bits porting iron than aluminum. It's just not worth it.
Only thing I'd say is Eric says he doesn't port cast except videos on cast heads so that might have something to do with it. If your interested in cast iron heads your going to most likely watch those videos and I know some he doesn't say he doesn't port cast iron🤷
im with you Eric, DV seems to make alot of assumptions and is a littke full of himself. The humble guys are always smartest because they are willing to listen
As a hobbyist, I've learned so much from your videos over the past 3-4 years. Now, you're backing it all up with Dyno time !.. and taking the time to share your findings with us. Freaking Awesome !! .. I've also read DV's books and found them insightful as well. Just keep doing what you do brother.. Your effort is very much appreciated. 🍻
Hope you could hang out with DV. Maybe your viewers or another UA-cam could pay for it or start a go fund me. Neither of you have anything too prove to me. Learn from both of you. A collaboration would certainly help the sport.
Hanging out with Vizard you would need to wear ear buds to block out his endless drone
Eric, I think you're an honest, no BS man and a TRUTH detector. And you always try to call it the best way as you see it objectively. That's why I drove 12 hours to your shop with my 2 sets of AFR heads for a marine app a few years ago.
Just keep doing what you have been doing ----- looking forward and learning and growing. Onward and upward ⚔️👍
DV is a knowledgeable guy but I take it with a grain of salt like I do from everyone.
Im with you. 100% correct. I'm not at odds with anyone, I just don't think that anyone knows it all.
If someone would quit watching videos from you, it is arrogant and only displays that people are emotionally attached to beliefs not truth.
Warren Johnson is a mechanical engineer too.
My dad can beat your dad😡 My dads got a cooler nickname😡 This is getting old. Aren't you all professionals? Remember, opinions are like assholes, we all have one. DV is DV, you are you...let it go. Why cause division among gear heads? Don't we have enough shit to deal with in real life?
DV is either not as smart as he thinks he is or impossible to work with. If he was as good as he believes he is and capable of making power, he would have been a well known engine builder not author
He believes he is one of only four people in the world that knows how to pick a cam yet hasn't put this extraordinary superhuman talent to use and started a cam company. Instead he chased the limelight with books and lectures. I would love it if he had of started a cam company because he would soon come to learn a vast majority of people buying cams for their street going cars lean to drivability over dyno numbers. All his proclaimed squillion of dyno test have shown is what is common knowledge that tighter lobe separation boost midrange torque. Maybe this wasn't as well known in the 70's and 80's as what it is today.
Eric thanks for the video, I like the way you share data , I’ve watched a tone of DV videos , he goes on and on and on …. Yeah keeping doing what you do here in Australian 👌🇦🇺
I think you and David are both great guys. Give him a call.
I like that you mention the infographics. Anything on the yellowish/orange (IOP and later) is Stan's handiwork. Stan is a pretty cool dude but he also has a vested interest in making the images show what DV would like to portray.
The cam thing blows my mind. I'd wager that just during his time with Gibbs, Jason Line tested more cams than David did in his entire career.
Alot of the engine simulators and programs are based on the SAE papers written about that subject. Gordon blair probably has the best written books hes more known for 2 strokes but has done 4 strokes as well. Having worked with many engineers and having had 30 plus engine dynos running 24/7 at the Livonia shop I can say Ive done alot of testing. But I know people that Im confident have done more than David, and Warren put together. Ill say to you what some of the best said to me. Horsepower is easy its emissions and all the other issues on top of that that bring the challenge.
Brother that's the truth, i think with et cylinder head, we went through a bunch of cams, valvejobs, to get a emissions legal ls1 package that would not kill cats, pass a im240 test and make 460hp to the tire with headers etc.
I think it took us 6 months to iron it all out. A very popular car tuner sold thet package for years.
I've never been a big believer in vizard, he's always seemed kinda eager to treat every engine like a 1955 cast iron headed SBC.
Don't even get me started on his cam software, ugh.
Me being a Ford guy… Bob Glidden I’m sure he did a ton of R&D. You’re right, they don’t have time to write books. Warren is definitely one….
Darin is a super sharp guy. I see him on Facebook from time to time. You’re right, lot of them are not on line. Anyways I enjoy your videos
DV is a genius and absolute legend. If you don’t believe it, just ask him. He’ll tell you. 😄
Haha, that was actually really funny.
I am looking forward to hearing about the Promaxx 375 heads. I will be putting together a 572 and am looking for a decent head to put on them. Eric, thanks for all the effort in sharing info with us.
We have a fellow who used to have a dyno, and did lots of tests. Has lots of opinions, results from those tests, and formulas based on observations with old obsolete parts. Yep
The more you learn, the more you start realizing how little you know. That is why most really knowledgeable people are very humble guys. Keep on keepin´ on Eric. I´ve learnt a lot from you. I really enjoy most of what you put up on UA-cam. Not porting cast iron? I think you will... eventually 😜
He likely doesn't for health reasons, alloy can cause issues too, but the big chips aren't dusty coming off the single cut burrs.
Thanks for hanging in there with me.
DV's opinion carries no weight today. Apparently he has no dyno today. Presents himself as an angry old guy who is absolutely correct, and should never be questioned.
Believe the science
@@DavidVizard What part of my statement is "BS" Sir?
Ive been reading most the big names since before the internet. I don't totally dismiss DV but I've found him as much as a salesman than anything else. Im not saying he doesn't know his stuff but he is a ledgeon in his own mind. You are 1 of the few that backs up what he says with actual numbers. DV will throw out numbers now and then but to get lengths to talk around actual facts. Most of DV's books and videos leaves me with more questions than answers.
There's no reason to totally dismiss him per se. The problem is that he does not evolve and he is too full of himself.
I spoke about an intake with Morgan about a year ago, and unlike Vizard, Darin was really up front about the fact that some of the stuff he had designed and said in the past, did not fit now. We were talking tunnel ram manifolds. Vizard is the complete opposite. No humility, and according to him, nothing has changed anywhere.
I enjoy learning from both EW and DV. Will continue to do so.
I wish I could go back and change how I acted at times in my life too. We've all had our moments of too much pride or whatever it was that we let get the better of us at times.
I can’t force myself to watch DV videos
ANY time someone is full of $#it they need to be called out. I don't care WHO it is.
Hey Eric
Everyone has an option on all this different racing technology. Till you personally sit down with each of these different individuals with all different opinions at the end of the day you personally don’t know what they do. Everyone of these individuals have egos and think they’re the best at what they do in this race industry. If you find something that you can learned or can use from these individuals than do that and leave it at that point. I will tell you this from life’s experience as a 61 year old, you’re dead wrong about having solid technical information and data that works and the automotive industry will pass on it. There are hundreds if not thousands of technologies that were valid or cutting edge that was passed on because it would upset a certain program. Check out automotive inventions history and you will see how fair behind we are with technology. So don’t be so critical on some of these individuals that have a big ego. Just do your part and learn what you can to better yourself and win some races. At the end of the day everyone had teachers they didn’t like but still learned something. Who knows in 20 years some kid might prove Einstein was wrong!
Take care and don’t take this personal
Cecil Miller
It seams like you have to watch 20 Vizard videos to get to the point, whereas Weingartner can get to the point in two videos. And Eric clearly explain the work being performed on the cylinder head. And shows all the data on the performance potential of the cylinder heads.
Eric, your not making a proven argument , its your opinion . I like both channels .
Ok
Hmm. Two guys whose work, past and present, has aided my technical data base. I hope this plays out.
So i was a gm linetech for 25+ plus years ima retired now an folks ask me can u work on my car i tell them no i cant ... i dont know anything about the newer stuff .... older guys have issues admitting they cant or arent what they once were ..
Of all the channels that talk about porting, you've shown me more real world applicable knowledge. Not to discount anyone, but you've shown methods, math, theory, applications, general porting rules and what happens when you transgress these rules. Appreciate what you do Eric
100%... I've learned SO much from Eric over the last 3-4 yrs.. Super valuable info. I very much appreciate his efforts in sharing his findings with us.
I just found your channel from OMG and this is the first video I watched because I saw DV and I figured it was about David Vizard. I’m really new and green when it comes to this motor building but really interested in learning, I started out watching David and even with my limited knowledge realized quickly he was full of himself and more interested in telling us he has more knowledge then anyone else and using brain surgery for sympathy from viewers and trying to sell 30 year old books. I’m here and was there to learn. Hope to learn some useful things here.
Come on guy's give DVD a break.
He is recovering from a brain injury after all 🤷🏻♂️
Keep being honest and doing what you do brother and I'll keep watching have a great day Eric
What I’ve learned in my 30 years of racing motors is One size does not fit all! Hell, I only watch these for a baseline of thought. Truth is every motor is gonna respond differently to different things because of the physical make up of it.
Eric, I've been in this game almost 25 years. I liked you from the first video I caught by accident. When you're around as many people for this long, separating the "bull" from the "$*!t" gets easy. I saw through his marketing years ago. Not to mention his material and presentation makes me wanna gaze into my 🔮.....
Anyway, you made a legit stand and that's respectable. I wish you made a ton more from UA-cam. Maybe short tutorials of your work and techniques would peak more interest. Then again that takes time away from the job altogether. I couldn't do both....man I know i couldn't. Respect!
I bought a DV book when I was 17. At 18 I was building small blocks that were among the fastest door cars at the drag strip. I started porting heads and building race engines with nothing more than my own thoughts and the knowledge I gained from DV books. Back then he was pretty much it. Other books I had were BS.
I'm always curious what other have to discuss and critical to none. I have enjoyed eyeing what I could see in pro race engine shops and as always, learn something. I truly admire DV because I have had measurable results by learning from him .
I find anyone sharing information and tech to be of great credibility.
Keep on keeping on yall 😊
David Vizard is the Bernie Sanders of engine builders
Your right about people who can't change their minds, their are people still supporting trump.
Tens of millions
DV lost credibility with me on a video he was doing about racing in the BTCC, and he went into great detail about a story that involved him and Win Percy, DV claiming this happened and that happened in this race, how Win Percy crashed trying to keep up and DV got a podium position etc etc, i did a deep dive on that season of BTCC and found that not once in that season, did anything he state actually happen, i even went so far as to go through every season just in case he had his years mixed up, but no, noothing he said ever happened period. I know it seems petty but if you can be dishonest about that just to push a point you are trying to get across, where is the credibility.
I have watched a lot of DV videos, and you can see him struggle, due to his brain surgery due to no fault of his own. Dv seems to lash out sometimes, which may be due to his struggles, and he may take a comment as a personal attack. Having a UA-cam channel he needs to have a thicker skin. Mr. Weingartner I have watched your channel also and this was a very well balanced response, and as someone as mentioned in your comment section it would be nice if you two got together. As busy as you are, I really don't think that would happen currently. Keep up the good work.
I bought a dv book several years ago to find nothing but a collection of somewhat relevant stories about his accomplishment and very little actual content or real info on the subject matter.
Eric always look forward to watching your content, block out the noise and do you,we appreciate your dyno proven and flow bench proven data
EW , the worker, showing the product of hard work and getting results.
DV , the politician , flap jawing about myth, sky faries and forever skirting the presentation of actual results by putting others down.
His channel that professes to 'not take BS' should in that light cancel itself!
Internal combustion engines have so many variables, the mind can be endlessly challenged by all the ways of combining it. Having difference of opinion over it cannot be avoided, and what makes our hobby interesting is the bottomless well we all drink out of.
Oh dear. Well, engineers are generally not philosophers, that much I know. It helps to avoid the personal: talk about outcomes and causes, change & effect. If it looks like a problem is out there [waiting to be solved]... that's a good place for it to be with an analytical mind at the ready.
Live and learn Eric. Will continue to watch you. I have heard all kinds of opinions from all types of automotive experts. Take and leave what you want. I will continue to watch your channel. If someone's personality becomes toxic, I won't care what they know, they will be removed on my end of things.
Thanks for sticking with me.
I still listen to both of you. For me, what works best is to fast forward the dramatic and stick to what works.
Back in the 90s when I got ahold of his books it was a game changer compared to trying to build engines from catalog and magazine articles. It seems today he’s trying to stay relevant but can’t acknowledge the next generation has surpassed him. Sad to see… thanks for all the great content Eric!
I’ll say this knowing you are both probably way too busy to ever be free enough to make it happen, but Garrett Mitchell was asking for the opinions of his followers on things that need to be tested. It would be extremely cool to have a dyno shootout and then a track test with one car. Give all competitors an identical short block, have them use the same kind of heads ported their own way, same carb, and the camshaft of their choice. If Cleetus got on board to supply the car and do the filming it could really help any competitors grow their channel
I would do that but Garrett nor I probably have the time for it. I also don't want to spend a ton of money to prove a point.
Perception and Perspective are twisted through the lens of an Ego.
As much as everyone doesn't want to admit, an Ego has a lot to answer for but won't accept responsibility for it. That means, we ALL speak bullshit, but will never see ourselves as speaking it.
The point I want to share is, look past the BS. Learn to pick out the jems amongst the pebbles. No one is ever going to give a straight Google like answer. To learn their knowledge gained means that time needs to be spent getting to know the person. In this day in age, people are in that much of a hurry, this has gone from a chore to "can't be bothered." Which has gone full circle, back to an Ego problem.
I've always listened to the tone of how people say things. I have DV books, but watching his vids I was turned off. The people that have proven to have the best results tend to have humble personalities and will say things such as "what has worked for me" , "what I've found" "how I see it". Eric your tone is what makes me keep following you. DV's ego is too much for me.
The ugliest thing on a man, is his ego. Your humble nature shines...Keep being you Eric.
DV has had brain surgery for something, he says it in most of his videos. Sucks. But his mind is nowhere close to what it was 20-30 years ago. Some of his science leaves me scratching my head, if it's that's good why wouldn't the OEM's buy the tech from him. Just truly sad
He usually goes off on tangents attacking everyone in the industry, if this is helping his brain then maybe he is a lost cause.
Unrelated I unsubscribed from him last week. 10 mins of self promoting to 1 min of knowledge. Anyone who talks like that is just a backmarker.
All cool friend. This social media thing can be informative or in your face. Yes we lean on brain folks like you and DV to move us forward in our search and if we're here for the search than we know the head butting. I look at this way EW + DV / time = more fun spent working on my stuff and waiting to "smoke" that Tesla. Thanks man.
Oh ya Jag V12 project
i am on your side !! i follow his channel and have all his books ! seems very full of himself and always talk about his special cams !! never have i seen any proof !! with all of his supposed dyno tests he should at least show some of it !! i am on your side charge on
So sad to see and hear the negative comments. For the 99.9% of us, we try to sort through the information that those who have gone before us leave. DV has improved the knowledge of many, as you have earlier folks like Barney Navarro, Colin Campbell, Ed Pink, Dick Landy… it’s an endless list of generations of people brighter than us 99.9%. Hopefully we all can learn to separate wheat from chaff in our search for the important things.
Sometimes accuracy can be a sad thing to see and hear.
It’s always good to see a counterpoint . I still can’t believe people unsub over this stuff.
Does not matter. Others will come, and those who unsub over this, are not worth our time of day.
Vizard has a huge ego and loves to brag about himself. Just my opinion from what I've seen.
Just because someone has done a lot of something doesn't mean a lot of it is the right way to do it.
I like D.V. but have always listened with a grain of salt.
E.W. doesn't seem to gloat to me,which I find refreshing.
I watch both channels and like them both for different reasons.
What you and David having in common is that easily getting offended by the comments.
If you're going to produce internet content, you're going to get the trolls , it's inevitable, try to block it out , you'll be happier.
Keep up the great content, and I/we will continue to watch your channel.
Eric, you are very good at what you do. I find your video's technically well done and thought provoking. Don't let this stuff get under your skin. Let your testing and empiral data speak for itself. Ignore the noise and let the power of your engineering and research speak for itself.
Eric, you are similar to me in that sometimes I just have to say something even when I know I shouldn't.
I've seen some good info from Vizard, but whenever I see so many "non experts" that are avid fans of someone, I'm automatically suspicious as to whether they're legit or more of a "sales" expert. My litmus test is, how many people are running David Vizard engines or heads? I know he's older now, so probably isn't building as much, but how many ever did? I don't recall him ever being mentioned as anyone that built top stuff or was a tech resource for any winning racers. And no way he's dyno tested more than loads of race engine builders, whose JOB it is to find that extra couple of HP or torque or move the power to a different RPM, etc. Imagine the thousands of hours of dyno testing that NASCAR builders did to build plate engines, for example.
It's simple facts, data and logic. What race teams are using this guy's methods or info to build with? Any?
A majority of his claim to fame was a lot of early work he did in the 4 cylinder world across the pond.
I'm not trying to take anything away from him but the kind of stuff that he was successful at would be equivalent to someone who's the best player in the G-League in the NBA. One step above being the tallest midget. He knows his stuff, but he only knows a lot about his stuff, if that makes sense.
@@Carl_Jr Yep, I get it. He's not unknowledgeable at all. But I don't think he's remotely some irrefutable guru, either. And when I see so many guys who think that tuning a carb is bolting it on and setting the idle just worshiping the guy, my BS detector goes off. Then I want to know what he's built. I'm sure he's built some stuff, way more than the average racer, but to put him on the level of some of these race engine geniuses....I don't think so. If he was all some folks think he is, at least SOME of the well-known builders would refer to him and have some praise...and I don't see that.
He's a great writer and appeals to the less knowledgeable.
@@SealofPerfection That is pretty much it.
It’s all in the data! That’s why I follow and buy from you, Big “E”! I’m still working on getting the car together. Like you say, time is short. But I truly believe that this is going to be the baddest m’fr I’ve ever built. I can’t wait to send you videos! Take care, and continue to follow your heart!
Bro name one thing he (DV) has accomplished in racing. People who say that they are the best are usually just postering to hide what they don’t know. He is accomplished of having theories and being able to put them down on paper. Not much more than that since I’ve been in the industry (30 years)
And he talked shit on Darrin too.
Good on you for doing the good work, it might not have changed the guys mind who posted it but surely ruffled some feathers.
100% agreed with this statement 👍
In the '70s, '80s and 90s it's not hard for me to believe he did a lot of testing many things. Since the 2000s, I think he's trailed off a lot. I grew up reading his stuff, and it has served me well. Having said all that, I think technology as of late may have passed him by a bit.
Agree. We have all learnt something from his books just as we have all learnt something from John Batcheal and other authors. What's happened over time though is the natural advancement in one field has dragged others along. The advancement in spring technology has allowed cam lobe designers more freedom and better usage of the head ports being developed today with improved valve motion. That's driven combustion chamber design and then pistons and rings have caught up to seal the whole deal. To believe 1980's testing of engines will be replicated with today's technology is naïve. You won't get in trouble using concepts derived from those test but you would fall short. Who would use Comp Magnum lobes these days for a max effort deal?
People have got to realize there is nobody who has all the answers for any given topic.
The goal as a consumer of information is to find the real good information out of the blob someone gives.
Anyone who is sitting on a specific side in this kind of thing is just doing the same behavior as a kid in kindergarten arguing that their dad is the strongest dad.
Keep the info rolling sir, many of us that rarely comment are the most appreciative of the information and work being done by the collective hot rodding community.
Will do
I’ve enjoyed DVs videos but I can’t watch them too much because he drags the videos out forever. I also know he’s had a brain issue that I’m sure causes some issues. I also don’t think DV does really big bad motors on the level many other builders have. I have his carb book and it’s great. I know he’s developed combos for every odd and unusual engine there ever was. That also doesn’t make him a better head guy than Eric and SR or Morgan etc. I was in a machine shop recently where the owner was bad mouthing a certain dyno operator in Ok. I quickly called BS and brought up the fact that this guy doesn’t have anything to ever say good about anyone.