Thanks. Long tubes will shift the max hp and torque up in rpm, which is good for high rpm racing. For a crawler, short tubes keep the hp and torque at lower rpm, which is what I wanted here.
In your opinion if you have to compromise for packaging is it more important to have equal length primaries or a straighter section right after the exhaust port?
it depends on the application, equal length primaries are useful if the engine is always operating at mostly the same RPM (like drag racing), different length primaries provide better torque distribution at various RPMs (again depending on the application). A bend right after the exhaust port is fine as long as there is no obstruction in the flow through a reduction in cross section.
It depends on the application. For racing at constant RPM, yes it is better to have equal tube headers, for all other applications that the RPM varies constantly, it is better to have different length tubes
Bro is no 95-97 350 vortex cat forward headers on the market period. If you could bust out a single cat forward (on the passengers side) and a twin cat forward for guys who will move their computer etc you’d be a rich man. I can weld terribly but I’d buy a set of headers on the spot from anyone who would take this on as would so many others.
where did you get your kit? Regarding the 2nd set, didn't you have to remove the aluminum coating first in order to weld? Did you paint at least the welded part to prevent rust?
I bought the kit from Summit racing. I did grind the coating where I welded, but I don't think it's needed for Mig welding. yes, I painted all the headers with ceramic coating after it was done and baked it.
My primaries are 2" diameter, and the length of each runner varies from 18" to 24". But you should really size your headers according to your engine specs, my specs are not necessarily the right ones for your engine.
@@rgsabat Ohh I agree, I'm sure my new 615 needs a completely different setup. Currently my 516 has 2.125 primaries, 44in long with a 4in Collector. Working in exact specs but we will probably have to do something like 2.375 or 2.5 primaries, 34in long, 4in Collector. Problem is I'm not ditching the sidepipes and the car had been sitting for years. I need to do something wicked to make me want to drive it again
Good question. It depends on the application... For drag racing where you want max HP and torque in a small RPM range, example around 6000 rpm, then yes, you would want equal length runners tuned for 6000 rpm. For a daily driver, different length runners would contribute to the torque curve at different rpm range.
I'm doing an engine swap and am worried about clearance issues. This is a life saver man thank you
Happy to help
Don't forget that tool axis straight line to get a socket onto each manifold bolt. Good work.
Thanks great pictures and explanation.
Nice craftsmanship. Primary tubes need to be much longer to see any performance improvement.
Thanks. Long tubes will shift the max hp and torque up in rpm, which is good for high rpm racing. For a crawler, short tubes keep the hp and torque at lower rpm, which is what I wanted here.
In your opinion if you have to compromise for packaging is it more important to have equal length primaries or a straighter section right after the exhaust port?
it depends on the application, equal length primaries are useful if the engine is always operating at mostly the same RPM (like drag racing), different length primaries provide better torque distribution at various RPMs (again depending on the application). A bend right after the exhaust port is fine as long as there is no obstruction in the flow through a reduction in cross section.
Hi thanks for the great video, I was alway told that all tubes must be the same length between the flange and collector, is that not true? Thanks
It depends on the application. For racing at constant RPM, yes it is better to have equal tube headers, for all other applications that the RPM varies constantly, it is better to have different length tubes
@@rgsabat thanks for the clear explanation
@@rgsabat not true
Thank you for the video, helps out a ton!
How much to make me one for my buggy? Mine is broken in many spots. 472 chery engine.
Bro is no 95-97 350 vortex cat forward headers on the market period. If you could bust out a single cat forward (on the passengers side) and a twin cat forward for guys who will move their computer etc you’d be a rich man. I can weld terribly but I’d buy a set of headers on the spot from anyone who would take this on as would so many others.
Great job 👍
where did you get your kit? Regarding the 2nd set, didn't you have to remove the aluminum coating first in order to weld? Did you paint at least the welded part to prevent rust?
I bought the kit from Summit racing. I did grind the coating where I welded, but I don't think it's needed for Mig welding. yes, I painted all the headers with ceramic coating after it was done and baked it.
What kind of primary diameter and length are these after you completed them?
My primaries are 2" diameter, and the length of each runner varies from 18" to 24". But you should really size your headers according to your engine specs, my specs are not necessarily the right ones for your engine.
@@rgsabat Ohh I agree, I'm sure my new 615 needs a completely different setup. Currently my 516 has 2.125 primaries, 44in long with a 4in Collector. Working in exact specs but we will probably have to do something like 2.375 or 2.5 primaries, 34in long, 4in Collector. Problem is I'm not ditching the sidepipes and the car had been sitting for years. I need to do something wicked to make me want to drive it again
Did you mig weld everything
Yes I didn’t have my TIG back then. I would TIG weld them if I had to do it now.
Good job 👏
Aren't all the runners supposed to be "equal length"?
Good question. It depends on the application... For drag racing where you want max HP and torque in a small RPM range, example around 6000 rpm, then yes, you would want equal length runners tuned for 6000 rpm. For a daily driver, different length runners would contribute to the torque curve at different rpm range.
Good tips!
Thanks!
Nice buggy!
👍👍👍
those 11 dislikes are a bunch of haters
👍👍
You made it look too easy.
this is just a sweet and amazing works i believe 🤩😍🥰🤑😎💙💯🤏🤙