Really great video. Not only does it takes some testicular fortitude for him to go round two, but very kind of you to show side by side comparisons. You have such integrity, and that is not very common these days.
I love when people crap all over someone who's putting themselves out there for honest evaluation. Shows some real "integrity".... (Sarcasm) I've ported a bunch of motorcycle heads.... I know it's different but, the principles are the same. And this stuff is equal parts art and science. You can understand the science behind airflow all you want but, if you have no talent, you're more likely to make things worse. And I'm sure I made the first few heads I ported worse.... You just have to keep trying and be able to handle failure..... The guy who sent you that head absolutely has talent. And guts. People have no idea how much work goes into this stuff.
The guy who sent that head in has huge chrystal titanium bowling balls. He also is an excellent head porter and should be really proud of him self. He did amazing! The 50 deg seat and likely slightly larger throat would be most of the difference at higher lifts. His 45 deg seat will last longer. A few cfm vrs a seat that still seals a year later is a no brainer imo. Good for that guy and good for Eric for doing all this and showcasing the guy with manosteel planets between his knees. 🤘👍👌 that was a cool interesting video. 🌟🌟🌟🌟🌟
This comment is to the guy that done the work on this head. Sir, from what I can tell on this video, you done an outstanding job on these heads. Well done sir.
For real, thank you for giving up a few tips and tricks. Years ago I was delivery driver for local parts store. I tried real hard to make friends with the old hot rodders, and try to learn a little, but it took years of trial and error, the old man who taught me most of what I know had a heart attack and passed away a few years back. No amount of time is guaranteed. So do what you can with what you have.....
He did a great job. Totally understand what you are saying about time put into porting. I am doing a set of FE heads right now. I have a super flow 110. Kinda hard to see improvements anymore. Gets progressively harder as you go to gain. But thank you for your videos !!!! Every time I watch I see something new in your port shapes I missed.
The man had the porting pretty down and the information you gave him improved his work. Its hard to get the information needed to port cylinder heads correctly noone wants to give up there secrets cause it does take years to get them figured out. Thanks for sharing!!
I haven't finished the video yet, but I want to thank Eric first. This is great stuff! I mean it! I had some help being taught at 15 and then sent out into the world at 18. I'd call up my old boss/mentor every now and again, but I never got much feedback on what I was having problems with. 25 years later so much has changed that we can now share this knowledge and the experiences together. Thank you Eric for doing a seriously great job just being you man!
I would never hate on someone for trying. I think he did good before and even better now. Once you get the basic understanding of where air flows the "most" and what to correct you start to really understand. Hey also, does shaping the Valve Guides cause any gain too? I always have "starpened" valve Guides for the direction of flow.
Hey Eric, Tim here, another GREAT vid......you show smart analysis, and go out of ur way to prove that this guy has BALLS!! (and talent).....nice to show how good he actualy did.......LOVE learning every vid.....i always seem to catch sumthin, and i been a head dude for a long time (first set of refurbished stock heads, i did in '82 or '83)....so viewers, ALWAYS STAY OPEN to learn, DONT BE A KNOW-IT- ALL!!!!.....foolish!!!!....maybe good for ur ego, but the motor will suffer cuz of it....then u REALLY look foolish......ok, LOVED the vid Eric.....ty sir.....PEACE to you.......look fwd to next one!!!.....oh, and GOOD ON YA MATE!!!! for the owner of the heads!!!
Nice job, both thanks for the video and showing how a bit of instruction and comprehension can make a big difference, thanks for teaching me, all the best to you and your loved ones
Top of the range video as always Eric great content and real world information based on your vast knowledge and experience keep it coming it's appreciated. Your client definitely has 316 SS balls and is not afraid to get after it as they say practice makes perfect good stuff.
Awesome job to the armature head porter. Those heads will make some good power. Eric, I got my heads and intake over to my engine builder. He was surprised that you hand port. He was impressed by how everything looked and with the flow numbers. I didn't realize that he too has a flow bench, he compared your numbers to what his bench has seen with Profiler X375 heads and was even more impressed when he saw the heads you did for me made even more flow.
I feel better now. I bought a bare pair of World Products SR heads for my SBC. Reading David Visards book Power with Economy, he had a scale drawing from a California performance shop of a modification to the slightly rectangular shape of a SBC intake port. Old Chevy heads had an intake port shape that tilted inward on the top side, sort of a dogleg, making it more narrow than the bottom. The drawing in Visards book widened the top of the port slightly in what's called an isosceles trapezoid. Basically, it's slightly wider at the top than the bottom. I made a couple of aluminum templates of the intake port shapes that I wanted, scaled up from the drawing in the book. Before starting, I used some stiff wire to create, or map the shape of the original casting. I did this in three areas in the port. Long story short I use my templates to scribe a new shape to the gasket area on the head. Once I got that shape, I used the stiff wires to guide me, to get the contours of the port cavities back to the original shapes. The heads were the same cc's is the original Chevy heads. One other thing I did that was recommended in his book is to install a 1.6 exhaust valve but retain the stock intake size. I didn't need 2.02 valves because this wasn't a race car 😁 The horsepower gain was quite noticeable but I have no idea if I helped or hurt those heads. Had our local area had someone that could have flowed the heads, it would have been fun to do it before and after. These were iron heads, not aluminum and I can probably guess over 80 hours of very slow and tedious work. Most notably was the change in the exhaust note of the motor which I believe was caused by the larger exhaust valve. Anyway you said how long it takes you to put a set of heads...... ...... Now I don't feel so bad for me taking as long as i did to accomplish my task. 😁 It's the only attempt I've ever made at porting heads and it was a fantastic experience I just wish I knew if my efforts were worth it. I'll never know. I love the info you put out. I don't visit often, but the way you teach and describe things, when I start watching, I can't stop.
Being a good driver with good reaction times and knowing your cars suspension setup can make up the difference in power more times than not. Many will blame the car for not enough power when actually it was the driver. Looks like good work for someone with a lot less experience👍
Great video Eric. What a grand job He did. Just so You Know, yes, sometimes the way you sound, comes across, like you say you hope it not to be. You know what I'm saying ? Anyway try and let it slide, because, the rest of your content does not feel that way. I really think it's Your passion that is coming out ! I love your work and Videos. Thank you.
May be a dumb question or you have already answered sorry if you have but, How thin is normal or acceptable for port to pushrod or water port wall thickness? .120"? .1"? or even .05"? when porting
I really enjoy Your videos You have a great way of being objective and honest with Your observations and testing ! You are one in a million ! Thank You for the great content and work ! 👍 🇺🇲🇵🇷🦊👍
Great video. He did a really nice job porting that head. I believe the reason for the 10 cfm difference at the higher lift is primarily due to the valve angle. The 50 deg seat will help with high lift while hurting low lift flow. This is something to keep in mind when building mild street engines. Sometimes with a low lift cam it is beneficial to go with a 35 degree seat to enhance low lift flow. This is due to the time the valve is open at the lower lift vs high lift and also the diameter of the valve. I would be interested in seeing a video comparing a stock port with a good valve job vs a stock or very basic valve job with common "dyi internet porting" thanks for sharing your knowledge.
I have a four 440 Chrysler do you think a 345 CFM head would hurt it or help it compared to a 270 CFM head ?I can’t make up my mind I’m choosing a huge Indy Cylinder Head or a Trick Flow head…My car is very light and has a 4500 stall converter… I want to choose the bigger head because Chevrolet somehow gets away with it on their Factory square port heads
Hey Eric I remember watching a old headybytes vid years ago and he mentioned not sleeving the head bolt hole would cause tuning issues from ports sharing air. Is it important or not really an issue?
How much flow difference can there be casting to casting? Do all the heads you work the same technique flow the same final numbers? I’d let him port my heads.
Have you done a nitrous head? And if so what video if you don’t mind. I am building a 351w nitrous 393 stroker and would like to see what you would do to a head for nitrous.
@@WeingartnerRacing Ok thank you. I see where I misspoke I know you do nitrous heads I wanted to know if you had a video about the that I didn’t see. Sorry about that.
Quick question about the sleeve is it the turbulence caused by the air gap between the stud and head that seems to reduce flow compared with being sealed? im assuming the sleeve is protruding into the port more than the stud alone so with that much gain it must be because of the “whistle”effect or just turbulence the gap can cause
I have some dragon slayers I have been consuming oil at first I thought it was the intake gasket changed them and got less smoke but still used oil. I have recently added sealer to the rocker studs for the intake valves, I have no noticeable blow by no huffing out the valve covers, when I took the studs out all that was there was locktite I'm curious what and how you assemble n your heads. Thanks for your time. Time will tell if this fixes my issue. Also is the cometic gasket better for the dragon slayer the felpro is a straight and hangs over in the valley vs cometic is notched to the head shape, I have tried 1206 ran for a year daily driven now I'm on 1206s-3. Any and all advise is appreciated.
Short side shape. Your shoulder is round and smooth, his has bends in corners. Can't tell from that angle, but the next crucial point is the "roof" transition to intake. Smooth, round and as straight as possible speeds up the incoming flow. That's why port matching. Overall finish is much better. If you hand blend in the back cut, you get even more low lift flow. But, I would put more mass on the stem. Relatively low rev range, 4k-8k, can handle even an ounce more and larger bowl needs shallower attack angle to prevent turbulence inside the bowl.
Hey Eric, What happens if you put a "top cut" on the valve, so you have your back cut, seat and then top cut? Or would this mean your valve is just too big for the setup and you end up with too much shrouding?
Out of the box trick flow or air flow research will walk all over your heads and never back cut the exhaust valves Tony Manos heads are fare better and no 50 degree seats my self 55 years of porting AFR for 20 of those years Chrisheads4u
You are incorrect sir. The afr245 flows 329cfm on my bench. You can watch videos of me flowing other afr heads. They are not even close. As far as power nope again customers can back that up.
This whole discussion about the different angles has become obsolete since the advent of CNC and 5-axis machining. The only important angle is the 45° angle at the valve seat. All other angles can achieve significantly better filling through optimized radii.
Really great video. Not only does it takes some testicular fortitude for him to go round two, but very kind of you to show side by side comparisons. You have such integrity, and that is not very common these days.
Thanks.
I love when people crap all over someone who's putting themselves out there for honest evaluation.
Shows some real "integrity".... (Sarcasm)
I've ported a bunch of motorcycle heads....
I know it's different but, the principles are the same.
And this stuff is equal parts art and science.
You can understand the science behind airflow all you want but, if you have no talent, you're more likely to make things worse.
And I'm sure I made the first few heads I ported worse....
You just have to keep trying and be able to handle failure.....
The guy who sent you that head absolutely has talent. And guts.
People have no idea how much work goes into this stuff.
The guy who sent that head in has huge chrystal titanium bowling balls. He also is an excellent head porter and should be really proud of him self. He did amazing! The 50 deg seat and likely slightly larger throat would be most of the difference at higher lifts. His 45 deg seat will last longer. A few cfm vrs a seat that still seals a year later is a no brainer imo. Good for that guy and good for Eric for doing all this and showcasing the guy with manosteel planets between his knees. 🤘👍👌 that was a cool interesting video. 🌟🌟🌟🌟🌟
This comment is to the guy that done the work on this head.
Sir, from what I can tell on this video, you done an outstanding job on these heads. Well done sir.
I could not agree more with you. Great job. As far as the video goes it look great also.
For real, thank you for giving up a few tips and tricks. Years ago I was delivery driver for local parts store. I tried real hard to make friends with the old hot rodders, and try to learn a little, but it took years of trial and error, the old man who taught me most of what I know had a heart attack and passed away a few years back. No amount of time is guaranteed. So do what you can with what you have.....
I like your honest opinions. That's why I keep watching your videos.
Great work 👍
Thanks for watching.
He did a great job. Totally understand what you are saying about time put into porting. I am doing a set of FE heads right now. I have a super flow 110. Kinda hard to see improvements anymore. Gets progressively harder as you go to gain. But thank you for your videos !!!! Every time I watch I see something new in your port shapes I missed.
The man had the porting pretty down and the information you gave him improved his work. Its hard to get the information needed to port cylinder heads correctly noone wants to give up there secrets cause it does take years to get them figured out. Thanks for sharing!!
I haven't finished the video yet, but I want to thank Eric first. This is great stuff! I mean it! I had some help being taught at 15 and then sent out into the world at 18. I'd call up my old boss/mentor every now and again, but I never got much feedback on what I was having problems with. 25 years later so much has changed that we can now share this knowledge and the experiences together.
Thank you Eric for doing a seriously great job just being you man!
I would never hate on someone for trying. I think he did good before and even better now. Once you get the basic understanding of where air flows the "most" and what to correct you start to really understand. Hey also, does shaping the Valve Guides cause any gain too? I always have "starpened" valve Guides for the direction of flow.
Hey Eric,
Tim here, another GREAT vid......you show smart analysis, and go out of ur way to prove that this guy has BALLS!! (and talent).....nice to show how good he actualy did.......LOVE learning every vid.....i always seem to catch sumthin, and i been a head dude for a long time (first set of refurbished stock heads, i did in '82 or '83)....so viewers, ALWAYS STAY OPEN to learn, DONT BE A KNOW-IT- ALL!!!!.....foolish!!!!....maybe good for ur ego, but the motor will suffer cuz of it....then u REALLY look foolish......ok, LOVED the vid Eric.....ty sir.....PEACE to you.......look fwd to next one!!!.....oh, and GOOD ON YA MATE!!!! for the owner of the heads!!!
Thanks
Nice job, both thanks for the video and showing how a bit of instruction and comprehension can make a big difference, thanks for teaching me, all the best to you and your loved ones
Top of the range video as always Eric great content and real world information based on your vast knowledge and experience keep it coming it's appreciated. Your client definitely has 316 SS balls and is not afraid to get after it as they say practice makes perfect good stuff.
Awesome job to the armature head porter. Those heads will make some good power. Eric, I got my heads and intake over to my engine builder. He was surprised that you hand port. He was impressed by how everything looked and with the flow numbers. I didn't realize that he too has a flow bench, he compared your numbers to what his bench has seen with Profiler X375 heads and was even more impressed when he saw the heads you did for me made even more flow.
I get lucky sometimes.
I feel better now. I bought a bare pair of World Products SR heads for my SBC.
Reading David Visards book Power with Economy, he had a scale drawing from a California performance shop of a modification to the slightly rectangular shape of a SBC intake port. Old Chevy heads had an intake port shape that tilted inward on the top side, sort of a dogleg, making it more narrow than the bottom.
The drawing in Visards book widened the top of the port slightly in what's called an isosceles trapezoid.
Basically, it's slightly wider at the top than the bottom.
I made a couple of aluminum templates of the intake port shapes that I wanted, scaled up from the drawing in the book.
Before starting, I used some stiff wire to create, or map the shape of the original casting. I did this in three areas in the port.
Long story short I use my templates to scribe a new shape to the gasket area on the head. Once I got that shape, I used the stiff wires to guide me, to get the contours of the port cavities back to the original shapes.
The heads were the same cc's is the original Chevy heads.
One other thing I did that was recommended in his book is to install a 1.6 exhaust valve but retain the stock intake size.
I didn't need 2.02 valves because this wasn't a race car 😁
The horsepower gain was quite noticeable but I have no idea if I helped or hurt those heads. Had our local area had someone that could have flowed the heads, it would have been fun to do it before and after.
These were iron heads, not aluminum and I can probably guess over 80 hours of very slow and tedious work. Most notably was the change in the exhaust note of the motor which I believe was caused by the larger exhaust valve.
Anyway you said how long it takes you to put a set of heads......
...... Now I don't feel so bad for me taking as long as i did to accomplish my task. 😁
It's the only attempt I've ever made at porting heads and it was a fantastic experience
I just wish I knew if my efforts were worth it. I'll never know.
I love the info you put out. I don't visit often, but the way you teach and describe things, when I start watching, I can't stop.
Being a good driver with good reaction times and knowing your cars suspension setup can make up the difference in power more times than not. Many will blame the car for not enough power when actually it was the driver. Looks like good work for someone with a lot less experience👍
Great video Eric. What a grand job He did. Just so You Know, yes, sometimes the way you sound, comes across, like you say you hope it not to be. You know what I'm saying ? Anyway try and let it slide, because, the rest of your content does not feel that way. I really think it's Your passion that is coming out ! I love your work and Videos. Thank you.
May be a dumb question or you have already answered sorry if you have but, How thin is normal or acceptable for port to pushrod or water port wall thickness? .120"? .1"? or even .05"? when porting
I really enjoy Your videos You have a great way of being objective and honest with Your observations and testing ! You are one in a million ! Thank You for the great content and work ! 👍 🇺🇲🇵🇷🦊👍
Great video. He did a really nice job porting that head. I believe the reason for the 10 cfm difference at the higher lift is primarily due to the valve angle. The 50 deg seat will help with high lift while hurting low lift flow. This is something to keep in mind when building mild street engines. Sometimes with a low lift cam it is beneficial to go with a 35 degree seat to enhance low lift flow. This is due to the time the valve is open at the lower lift vs high lift and also the diameter of the valve.
I would be interested in seeing a video comparing a stock port with a good valve job vs a stock or very basic valve job with common "dyi internet porting" thanks for sharing your knowledge.
I have a four 440 Chrysler do you think a 345 CFM head would hurt it or help it compared to a 270 CFM head ?I can’t make up my mind I’m choosing a huge Indy Cylinder Head or a Trick Flow head…My car is very light and has a 4500 stall converter… I want to choose the bigger head because Chevrolet somehow gets away with it on their Factory square port heads
Hey Eric I remember watching a old headybytes vid years ago and he mentioned not sleeving the head bolt hole would cause tuning issues from ports sharing air. Is it important or not really an issue?
That guy was not right on many things. I have seen power gain having them vs not but it could have been what I did in the port that did it.
Considering the engine combination how much power do you think there is between out of the box vs the version 2 ?
amatures... gotta be nice to have a dang ol' S.G.-9 at your disposal...!! and, the amount of time, on the clock, vs. a rookie... damn! Nailed IT !!
How much flow difference can there be casting to casting? Do all the heads you work the same technique flow the same final numbers? I’d let him port my heads.
It can vary up to 10cfm. You can't always do the same thing to each head.
Have you done a nitrous head? And if so what video if you don’t mind. I am building a 351w nitrous 393 stroker and would like to see what you would do to a head for nitrous.
I do nitrous heads all the time I just haven't made a video specifically about them.
@@WeingartnerRacing Ok thank you. I see where I misspoke I know you do nitrous heads I wanted to know if you had a video about the that I didn’t see. Sorry about that.
Have you played with gm lt based heads yet? The dry air flow intrigues me.
Not yet.
Eric have you ever posted a price list for your larbor for porting cylinder heads Just curious I live in Nebraska Thanks
It $1200 now to port a set of heads.
Great video here!!
Quick question about the sleeve is it the turbulence caused by the air gap between the stud and head that seems to reduce flow compared with being sealed? im assuming the sleeve is protruding into the port more than the stud alone so with that much gain it must be because of the “whistle”effect or just turbulence the gap can cause
Something like that.
@@WeingartnerRacing cheers mate keep up the great work! the information you give for free is priceless for a backyard port grinder!
I have some dragon slayers I have been consuming oil at first I thought it was the intake gasket changed them and got less smoke but still used oil. I have recently added sealer to the rocker studs for the intake valves, I have no noticeable blow by no huffing out the valve covers, when I took the studs out all that was there was locktite I'm curious what and how you assemble n your heads. Thanks for your time. Time will tell if this fixes my issue. Also is the cometic gasket better for the dragon slayer the felpro is a straight and hangs over in the valley vs cometic is notched to the head shape, I have tried 1206 ran for a year daily driven now I'm on 1206s-3. Any and all advise is appreciated.
I use sealer on intake rocker stud and antiseeze on the exhaust.
im glad people are actually trying to port and learn and people that race have big cams with 500 lobe lift and 1.9 rockers and bigger.
Me Too.
Short side shape. Your shoulder is round and smooth, his has bends in corners. Can't tell from that angle, but the next crucial point is the "roof" transition to intake. Smooth, round and as straight as possible speeds up the incoming flow. That's why port matching. Overall finish is much better. If you hand blend in the back cut, you get even more low lift flow. But, I would put more mass on the stem. Relatively low rev range, 4k-8k, can handle even an ounce more and larger bowl needs shallower attack angle to prevent turbulence inside the bowl.
Great content, Eric! 👍
Thanks
Very nice!
Great job to both you and og porter
Thanks
would tapering the valve guides at the ends add anything I once had a head done and noticed the guides were tapered
I taper my guides but its out of habit. I don't think it helps much.
Do you work on Honda b-series heads as well?
No. Its not my bag.
I can’t wait until I can get a set for myself
Crazy pick-ups on just a valve job!
Yep.
Another sweet video
Thanks.
It turns out that it was Warren Johnson that sent in the head first time.. :D
Hey Eric, What happens if you put a "top cut" on the valve, so you have your back cut, seat and then top cut? Or would this mean your valve is just too big for the setup and you end up with too much shrouding?
My intake is 7.23 so 7.00 numbers matter to me
Cutters must come from G**dson
Exhaust but thats not the custom.
You SCREWED UP on the title for this...should have been Pro Porter analyzes amatuer ported head Version #2
Goodson
The exhaust cutter is but the intake isn't and thats the one I hate.
👍
Out of the box trick flow or air flow research will walk all over your heads and never back cut the exhaust valves Tony Manos heads are fare better and no 50 degree seats my self 55 years of porting AFR for 20 of those years Chrisheads4u
You are incorrect sir. The afr245 flows 329cfm on my bench. You can watch videos of me flowing other afr heads. They are not even close. As far as power nope again customers can back that up.
This whole discussion about the different angles has become obsolete since the advent of CNC and 5-axis machining. The only important angle is the 45° angle at the valve seat. All other angles can achieve significantly better filling through optimized radii.
No
The 5 axis cnc machine has to have a 3d model to perform it's work. How do you think the 3D Model is generated?
@@chevybelair9230 what I’m telling you is it can’t cut the angles for the valve job even under cuts.