How restrictive is the stock ex. manifold?
#1
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How restrictive is the stock ex. manifold?
I have a s4 turbo rx7... How resrictive is the stock manifold? If I get an aftermarket one that will bolt up to my stock turbo... should I expect any increase in power?
#2
Power = Cubic Dollars
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You will notice how much faster the turbo will spool with an aftermarket header. However, you will have to also free up the exhaust behind the turbo with a nice downpipe, and non restrictive exhaust to really see some HP changes.
If it were up to me, I would put on a nice exhaust from the turbo out, before I worried about the header (unless it's cracked.)
Jesse
If it were up to me, I would put on a nice exhaust from the turbo out, before I worried about the header (unless it's cracked.)
Jesse
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Well, I already have a 3inch turbo back system... I have to take the turbo off to have the wastegate ported... So i figured while I was down there I might as well make this as free flowing as I can without upgrading turbos... I have a 3 inch tid with only one 45 degree bend off the turbo. I have the exhaust system, so why still use this funky manifold?
#5
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I don't believe that any aftermarket manifolds are made that will fit the stock turbo........they all have universal flanges like t3...t4....I BELIEVE the stocker is a unique size.
And secondly I doubt if they made a manifold that was of a different design than the stock man. that you would see any difference in horsepower beyond 2-3hp so for the amount of dollars and work it would be - otherwise - a complete waste of time
but hey if you find something that fits don't let me stop you from trying it....
And secondly I doubt if they made a manifold that was of a different design than the stock man. that you would see any difference in horsepower beyond 2-3hp so for the amount of dollars and work it would be - otherwise - a complete waste of time
but hey if you find something that fits don't let me stop you from trying it....
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Originally Posted by classicauto
I don't believe that any aftermarket manifolds are made that will fit the stock turbo........they all have universal flanges like t3...t4....I BELIEVE the stocker is a unique size.
And secondly I doubt if they made a manifold that was of a different design than the stock man. that you would see any difference in horsepower beyond 2-3hp so for the amount of dollars and work it would be - otherwise - a complete waste of time
but hey if you find something that fits don't let me stop you from trying it....
And secondly I doubt if they made a manifold that was of a different design than the stock man. that you would see any difference in horsepower beyond 2-3hp so for the amount of dollars and work it would be - otherwise - a complete waste of time
but hey if you find something that fits don't let me stop you from trying it....
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yea, I was looking into the SSAC but, will it do anything? here is a link...
http://cgi.ebay.com/ebaymotors/Mazda...spagenameZWDVW
http://cgi.ebay.com/ebaymotors/Mazda...spagenameZWDVW
#9
Sharp Claws
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no one has any dyno numbers to prove anything but after looking at the design, if it holds up to the abuse, they should flow better than the stocker. how much of a gain? i don't know yet as i haven't had a chance to do just the manifold swap as a mod alone yet.
also to the posters above, keep in mind mods are usually seen as a % of horsepower increase. on a stock car a mod like this may only produce 2-3HP gains but on a highly modified car it may add up to 20HP or more. (yes it is not a linear figure, the stock manifold primary runner iterrupts much of the secondary manifold's flow so just about any other design would be an improvement IMO and 2-3HP is a rather conservative number)
also to the posters above, keep in mind mods are usually seen as a % of horsepower increase. on a stock car a mod like this may only produce 2-3HP gains but on a highly modified car it may add up to 20HP or more. (yes it is not a linear figure, the stock manifold primary runner iterrupts much of the secondary manifold's flow so just about any other design would be an improvement IMO and 2-3HP is a rather conservative number)
Last edited by RotaryEvolution; 01-06-06 at 01:40 PM.
#10
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Look at this
http://cgi.ebay.com/ebaymotors/Mazda...temZ8026758978
I realy like this seller on Ebay. I have not purchased from them yet, but I plan on doing so soon. It is built and designed for a direct bolt on for your STOCK T2 Turbo.
Jesse
http://cgi.ebay.com/ebaymotors/Mazda...temZ8026758978
I realy like this seller on Ebay. I have not purchased from them yet, but I plan on doing so soon. It is built and designed for a direct bolt on for your STOCK T2 Turbo.
Jesse
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tom port.. AKA streetport
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Originally Posted by Karack
oh god here we go again, the haters, the haters.....
#15
Sharp Claws
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if the manifold is tuned yes, i highly doubt that SSAC tuned the pipes which is why i am being conservative with the numbers.
i doubt it, the one Nick and i installed the fitment was almost perfectly OEM with the exception of the slightly larger mounting holes. the hybrid turbo was still a snug fit even on a T2 engine.
Originally Posted by 88rxn/a
lol, i think to many people have had there korn flakes pissed in! i wonder if that ssac manifold would clear enough room to eliminate the need for a spacer on a 6 port?? just curious.
i doubt it, the one Nick and i installed the fitment was almost perfectly OEM with the exception of the slightly larger mounting holes. the hybrid turbo was still a snug fit even on a T2 engine.
Last edited by RotaryEvolution; 01-06-06 at 01:52 PM.
#19
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Originally Posted by NOPR
I stand corrected, but buying that is a total waste of time.
Originally Posted by 88rxn/a
that ssac could cure my manifold leak!?!?!
#22
tom port.. AKA streetport
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thanks nz. i posted this along time ago about a bad (used) gasket thats leaking and i thought i was told it was the manifold or spacer. still gonna check the spacer though. this will def. look better than my old beat up stock manifold.
#24
tom port.. AKA streetport
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Originally Posted by Node
88rxn/1: No. its a stock t2 replacement. if it wasn't we'd need a new downpipe, diff than stock tid, and a new pipe to the intercooler
t2 wins, n/a's lose
t2 wins, n/a's lose
#25
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I'm running the ssac stock replacment manifold right now. Working great. I wish I could atest to it's sole performance improvments but I also installed the rtek 1.5 at the same time. Car does pull better than ever though. Time will tell how it holds up, I have less than 100 miles on the upgrades right now so we'll see.
Dom
Dom