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.
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 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.
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. 🍻
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 ⚔️👍
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.
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
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 👌🇦🇺
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 😜
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
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.
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.
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.
Don't apologize for having an opinion. Both you and DV have helped me a lot. A pissing contest over who has done the most dyno testin? come on guys. I hope neither of you quit making video's.
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.
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.
About two years here, after the constant attacks on other industry people, who are the leaders not him, I realised he is just trying to kick people that are out there doing their own thing.
DV was flow testing back in the seventies. His experience is VAST and whilst he isn’t known as the professor, he is known as the Wizard. Nobody really has any evidence who has done the most Dyno testing, it seems you are going with a hunch based on who you are more familiar with. At the end of the day who cares, what the end user needs is consistent repeatable results. David has suffered quite a few personal issues/injuries over the past few years and time is taking its toll, but never disregards what he has to say. Use his advice to get into the ball park and fine tune from there. Re any Cam Program .. the front end counts for nothing it is the algorithms built into the software that count. If you want to test cam programs, build an engine and buy the different cam programs cams and run them. Let’s see which cam program wins in the real world.
We all have dumb moments online. Yes I know who Warren Johnson is and he is relatively local along with Barnett, both good guys. I've dropped DV from my subscriptions and a couple of the guys he usually appears in videos with. The comment he makes proves why I dropped him.
I appreciate your content. We are all in learning mode. You learn something new everyday. I agree on valve springs thought. I listened to a Nascar and circle dirt track builder years ago. I went to his engine building shop to get a camshaft. I was amazed at all the valve train components he had there. I mentioned about all the best items I saw. He told me it was all junk. He said the valve springs are the most common fail point of engine development. Things have progressed alot since then. He said they will always be the limiting factor of RPM of build . Truer words I have never heard spoken in racing world. If they ever get it right we will be driving 20000 rpm vehicles. Take care of your business we will all be here.
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.
I have been watching your channel and videos for a while. I like learning new things. I am not running a SBC or an LS, but the concepts are the same and I use it to learn my silly little Nissan VQ V6 to make it better. Keep it up. There is always something new to learn.
Keep doing what you do and don't bother fighting on the internet, it's not worth it. You post great info, I'm a Mopar guy but still enjoy listening to all your tech videos.
I can't watch any more DV vids. He talks too slow, thinks he knows it all, and I don't have time to watch his long azz videos to end up with a big azz nothing burger. PLEASE DO NOT STOP MAKING VIDEOS! THEY ARE THE MOST INFO PACKED PER MINUTE THAN ANY OTHERS WITH GREAT A TO B RESULTS.
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?
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.
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
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'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.
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 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!😅
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 !
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.
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.
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
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🤷
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.
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 enjoy watching both or you guys but dv has a plain style but he is offering to have you over to check his place out. Life is short I am sure you are busy but why not go take him up on offer to go meet someone to see if he is legit or not. I agree probly valve float.
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 ..
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.
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!
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.
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 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
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.
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.
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.
LoL.... People get but hurt about their heros. People dont have the context to speak about things they speak about sometimes. People get enamored with their own legend sometimes. There are people building engines and racing at the top of heads up class racing 99% of so called racing people never herd of but their heroes best stuff couldn't even make the field at one of these races. As far as Clements... Tony or Dennis? I've known both familys my whole life..... Ones a sure enough cylinder head port developer.... ones a sure enough engine builder that has a sure enough cylinder head port developer not named Clements design his stuff. As far as cam development and dyno time.... when I was a kid my Dad had an old refrigerator that was home to old camshafts that wouldn't run worth a crap...... it was completely full and cams were stacked on top and along the side just topling over..... We had 2 worn out non repairable Stuska water brakes..... this was in the 1980s... my brother and I have killed a Stuska and currently on 902 #2 since then..... We aren't a big shop..... Wanna talk big, when Earl Gaerte died they had 7 dynos and as many Sf600s....From the 1960s till 2014, how much testing you think they did? Hes just 1...... Somebody thinks they did more than that? Talk about legend in your own mind.... People don't know what they don't know and some don't want to know. You will never change some people's minds.
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.
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.
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 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.
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.
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
What is the evidence of major amounts of testing? Championships !!!! How many championships does David have ? A typical race engine shop puts their work to the test in major racing series through competition. All else is bench racing.
@@DavidVizard, im not against you, or should be considered an enemy. I'm not saying that your experience isn't relevant or wrong. What I'm saying is we should all just be humble.
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
You could have summed it up like this: How many Pro Stock championships has Vizard won? Or NASCAR? Or ANY other top level motorsports? So the question is simple, if YOU want to win, and have no idea where to start, who's advice would You take? The guy(s) who have demonstrably performed and won at top levels? Or the guy who's never even qualified..
I attended a DV seminar & he is not my cup of tea. I have zero interest in anything 4 valve or less than 400 cubic inches or foreign manufactures. Im sure DV has some knowledge, but he doesnt have anything to back it up but tales. I just dont watch his videos, I like people who get right to their point & explin things as clear as possible. Warren Johnson could outwork me today & he is 30 years older than me😮 WJ knows his stuff!
There is *ALWAYS* someone who is more experienced, has more knowledge, whether you want to admit it, or not. Look at guys like Vic Edelbrock, Keith and Randy Dorton, Brian Tooley, does DV _think he's dyno tested MORE than those guys ? Sorry, but I know better. More dyno testing than John Kasse ? Doubt it.
Eric, I cant stop laughing at how pissed you were! You were spitting nails in a very controlled manner. I watch your videos along with Lake Speed Jr and also Brent Lykins. (I'm a Ford guy) I've watched some of David Vizard's videos, but they are SO slow and boring. Anyway, keep up the great work and I can't wait to watch the Great Camshaft Challenge results!!
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.
It’s ok to have multiple sources for good information. Keep it up. Patch things up with David. Because he’s not going to be around forever and if just looks like he was defending himself. Love your work and your videos. It’s great stuff.
Yep. You should have left it go. People just want to fight for the right to be right. I like the humble thing. I remember someone said the guy that is the loudest is a sure sign to look out for. The quiet humble guy is likely holding the cards...
He took over Uncle Tonys project. I think he kinda pissed him off. UTG just told him to take it and got another project. Basically DV threw Uncle Tony under the bus...
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.
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.
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.
Nice video Eric.
Very enlightening.
Keep testing.
I appreciate your humble attitude and fair honest approach.
Have a great day.👍👍
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.
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. 🍻
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 ⚔️👍
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.
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.
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 👌🇦🇺
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.
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
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.
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.
DV is a knowledgeable guy but I take it with a grain of salt like I do from everyone.
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
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
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.
Don't apologize for having an opinion. Both you and DV have helped me a lot. A pissing contest over who has done the most dyno testin? come on guys. I hope neither of you quit making video's.
The ugliest thing on a man, is his ego. Your humble nature shines...Keep being you Eric.
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.
Bro don't worry about viewers your work, content and products is awesome and straight fire🔥🔥🔥🔥🔥🔥🔥🔥
Thank you.
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.
Yeah I stoped watching DV about a year ago , you not going to lose me as a subscriber Eric 💪
About two years here, after the constant attacks on other industry people, who are the leaders not him, I realised he is just trying to kick people that are out there doing their own thing.
@DavidVizard no it is fact, you have made several videos, calling people liyers and quite frankly calling them theives.
Thanks for hanging in there with me.
DV was flow testing back in the seventies. His experience is VAST and whilst he isn’t known as the professor, he is known as the Wizard. Nobody really has any evidence who has done the most Dyno testing, it seems you are going with a hunch based on who you are more familiar with. At the end of the day who cares, what the end user needs is consistent repeatable results. David has suffered quite a few personal issues/injuries over the past few years and time is taking its toll, but never disregards what he has to say. Use his advice to get into the ball park and fine tune from there. Re any Cam Program .. the front end counts for nothing it is the algorithms built into the software that count. If you want to test cam programs, build an engine and buy the different cam programs cams and run them. Let’s see which cam program wins in the real world.
We all have dumb moments online. Yes I know who Warren Johnson is and he is relatively local along with Barnett, both good guys.
I've dropped DV from my subscriptions and a couple of the guys he usually appears in videos with. The comment he makes proves why I dropped him.
@@DavidVizard I studied engineering at a public Ivy school. Doubt that is it.
I appreciate your content. We are all in learning mode. You learn something new everyday. I agree on valve springs thought. I listened to a Nascar and circle dirt track builder years ago. I went to his engine building shop to get a camshaft. I was amazed at all the valve train components he had there. I mentioned about all the best items I saw. He told me it was all junk. He said the valve springs are the most common fail point of engine development. Things have progressed alot since then. He said they will always be the limiting factor of RPM of build . Truer words I have never heard spoken in racing world. If they ever get it right we will be driving 20000 rpm vehicles. Take care of your business we will all be here.
I understand what you are facing. I love your videos, and I'm so glad I brought the 496 book!
Thanks for your support.
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.
There is so much information being shared nowadays that is regular car guys love, it's awesome. We appreciate ALL of you guys. Group hug! haha
I have been watching your channel and videos for a while. I like learning new things. I am not running a SBC or an LS, but the concepts are the same and I use it to learn my silly little Nissan VQ V6 to make it better. Keep it up. There is always something new to learn.
Keep doing what you do and don't bother fighting on the internet, it's not worth it. You post great info, I'm a Mopar guy but still enjoy listening to all your tech videos.
I can't watch any more DV vids. He talks too slow, thinks he knows it all, and I don't have time to watch his long azz videos to end up with a big azz nothing burger. PLEASE DO NOT STOP MAKING VIDEOS! THEY ARE THE MOST INFO PACKED PER MINUTE THAN ANY OTHERS WITH GREAT A TO B RESULTS.
They're semi tolerable to watch if you change the playback speed to 2X in the settings.
Yep, he rambles on longer than Led Zepplin, and ends up in these off subject tangents attacking and putting down others.
Maybe you and DV should get together and swap notes. Maybe BOTH of you could teach each other something.
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?
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 🤣
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!
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!
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 🤣
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.
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 always thought D V had a big head , he shoots his mouth off to much
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!😅
All is prevented by not making outlandish claims. No matter how good you are, theres someone better.
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.
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
Vizard has a huge ego and loves to brag about himself. Just my opinion from what I've seen.
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.
You're right. You should have left it alone.
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.
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
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🤷
Can't we all just get along?
This kind of stuff really breaks my heart. I'm a big fan of both of you.
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.
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.
A humble genius will have the greatest audience
I enjoy watching both or you guys but dv has a plain style but he is offering to have you over to check his place out. Life is short I am sure you are busy but why not go take him up on offer to go meet someone to see if he is legit or not. I agree probly valve float.
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 ..
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?
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!
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.
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.
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.
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.
Warren Johnson is a mechanical engineer too.
you got sucked into the social media vortex from people that hide behind a key board
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.
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.
LoL.... People get but hurt about their heros. People dont have the context to speak about things they speak about sometimes. People get enamored with their own legend sometimes. There are people building engines and racing at the top of heads up class racing 99% of so called racing people never herd of but their heroes best stuff couldn't even make the field at one of these races. As far as Clements... Tony or Dennis? I've known both familys my whole life..... Ones a sure enough cylinder head port developer.... ones a sure enough engine builder that has a sure enough cylinder head port developer not named Clements design his stuff. As far as cam development and dyno time.... when I was a kid my Dad had an old refrigerator that was home to old camshafts that wouldn't run worth a crap...... it was completely full and cams were stacked on top and along the side just topling over..... We had 2 worn out non repairable Stuska water brakes..... this was in the 1980s... my brother and I have killed a Stuska and currently on 902 #2 since then..... We aren't a big shop..... Wanna talk big, when Earl Gaerte died they had 7 dynos and as many Sf600s....From the 1960s till 2014, how much testing you think they did? Hes just 1...... Somebody thinks they did more than that? Talk about legend in your own mind.... People don't know what they don't know and some don't want to know. You will never change some people's minds.
Keep being honest and doing what you do brother and I'll keep watching have a great day Eric
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
Come on guy's give DVD a break.
He is recovering from a brain injury after all 🤷🏻♂️
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.
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 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.
I think you and David are both great guys. Give him a call.
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.
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
Heres for the Cam contest as per David Vizard (for the kitty) Thanks.
Eric, your not making a proven argument , its your opinion . I like both channels .
Ok
What is the evidence of major amounts of testing? Championships !!!! How many championships does David have ? A typical race engine shop puts their work to the test in major racing series through competition. All else is bench racing.
@@DavidVizard , in what series?
@@DavidVizard, im not against you, or should be considered an enemy. I'm not saying that your experience isn't relevant or wrong. What I'm saying is we should all just be humble.
@@DavidVizard Prove it Walter (Mitty)
@@DavidVizardin what years was this success?
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
ANY time someone is full of $#it they need to be called out. I don't care WHO it is.
You could have summed it up like this:
How many Pro Stock championships has Vizard won?
Or NASCAR?
Or ANY other top level motorsports?
So the question is simple, if YOU want to win, and have no idea where to start, who's advice would You take? The guy(s) who have demonstrably performed and won at top levels? Or the guy who's never even qualified..
short answer? NONE
I will make my decision on dv when I see the polyquad head do what he says it should
I attended a DV seminar & he is not my cup of tea. I have zero interest in anything 4 valve or less than 400 cubic inches or foreign manufactures. Im sure DV has some knowledge, but he doesnt have anything to back it up but tales. I just dont watch his videos, I like people who get right to their point & explin things as clear as possible. Warren Johnson could outwork me today & he is 30 years older than me😮 WJ knows his stuff!
There is *ALWAYS* someone who is more experienced, has more knowledge, whether you want to admit it, or not. Look at guys like Vic Edelbrock, Keith and Randy Dorton, Brian Tooley, does DV _think he's dyno tested MORE than those guys ? Sorry, but I know better. More dyno testing than John Kasse ? Doubt it.
Your content is fantastic, don’t let the keyboard warriors get to you.👍
Another Morgan, Bob Morgan originally out of El Monte, CA does outstanding work and even made some billet BBC heads
Eric,
I cant stop laughing at how pissed you were!
You were spitting nails in a very controlled manner.
I watch your videos along with Lake Speed Jr and also Brent Lykins. (I'm a Ford guy)
I've watched some of David Vizard's videos, but they are SO slow and boring.
Anyway, keep up the great work and I can't wait to watch the Great Camshaft Challenge results!!
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.
Your 100% Eric... Dont know why DV doesn't stick to his rule of of no BS.... Sad 😞
How will anyone know how many testing someone has done.
It’s ok to have multiple sources for good information. Keep it up. Patch things up with David. Because he’s not going to be around forever and if just looks like he was defending himself. Love your work and your videos. It’s great stuff.
Yep. You should have left it go. People just want to fight for the right to be right. I like the humble thing. I remember someone said the guy that is the loudest is a sure sign to look out for. The quiet humble guy is likely holding the cards...
He took over Uncle Tonys project. I think he kinda pissed him off. UTG just told him to take it and got another project. Basically DV threw Uncle Tony under the bus...
UT is a hack, man. He couldn't take being wrong about flipped pistons for crying out loud.
@@rocketsurgeon11yeah, utg says a lot of off the wall shit
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.