what do you guy think about using an evo 9 turbo in an s2k?
s2k can make ~300 whp on 7psi. evo 9 turbo is good for 20 psi at 7500 rpm, so would it run out of breath at 9000 rpm at 7psi? i want to use the evo 9 turbo because of the twin scroll design and i can get 7psi by 2500 rpm, that would be a nice broad power band.

 

Evo turbos can make 20PSI at like 4K not 7500. IMHO I would get a turbo kit designed for the s2k instead of a custom job like this, you will spend less and make more power with a 50 trim or 35r Inline Pro Kit to name one. BTW my two cars before the EVO were s2000's so I know a little about them.

 

I would also recommend Inline Pro or Speed Force Racing for a S2k turbo kit.

 

umm, what are you talking about, my evo 8 turbo makes 21 psi at 7600 rpm. you're you saying that my boost guage is broken?

nothing wrong with doing a custom job to get what you want instead of always buying off the shelf.

 

We are talking about different things, the turbo will hold that PSI with a good boost controller, I was talking about initial spool to 21PSI.

 

i'm not interested in running 20 psi, i only want to run 8 psi max. an evo 9 turbo would spool to 8 psi much quicker than any other off the shelf kit although they can support much higher psi which I’m not interest in.

 

Good Luck. I never thought an 11.0 to 1 compression motor should be FI but thats up to you.

 

A stock turbo will spool faster than that. I get 28psi @ 4500 on a 35r.

 

try it and let us know whats up!!

 

inline pro makes a thicker head gasket for that

 

off topic but there's a guy claimed that his s2k is making more than 500whp with turbo (gt35r i think) on 91 oct gas alone. Is it possible or BS? Our evo no way making that power on 91 oct alone even with big turbo like gt35r. I have one. I didn't know much about the s2k so.

 

evos turbos are way too small for hondas. expically a s2k. a gt30r would be perfect.
also no one would waist there time to desige a turbo manifold for a a stk that would work with the evo turbo. t3/t4 is where it is at. for small turbos geting a turbo and manifold that is t3 flanged. anything larger than a gt35r should be t4. both also have divided flanges if thats what your looking for.

you also got to remember that a s2k revs to 9krpm and honda engines have a much high ve that a 4g63 and with all things being equal honda engines will make much more power per pound of boost.

 

it's possible but it would have to be a very aggressive tune and the dyno has to read high.

 

i think the turbo will be fine.

i would be more concerned about knock with the compression of the s2k engine running such high compression.

if you use a lower compression piston, then nothing to be concerned about.

 

i think you guys are missing the point. i'm only planning to run 8 psi max. i don't think that an evo 9 turbo would choke that much at 9000 rpm on 8 psi. 50 trim or gt35 would just be a waste.

i know a welder that would be able to make me a custom mani.