Yeah, I see what youre saying and I understand the concept. I just think it may not be as good on a 4 cylinder engine as apposed to a 6 or 8 cylinder because of the amounts of exhaust flow differences between the 3 but hopefully someone can prove me wrong.

 

What evidence are you basing this off of? In theory I would think it would spool faster than a twin scroll. And how would it not have the same top end?

Not saying I know but to be honest you dont either. You are just throwing your opinion out there. Truth is, it works. It works well. How well it works on a 4cyl is unknown but Id put money up that its well worth the $500 extra it cost when you are building a setup if you can fit it.

 

Why am I a trader? I still have a S2000 sitting in my driveway parked right behind my supra in the garage.

I have owned over 12 cars and im only 24 years old. I think i just like trying new things. I had 4 different turbos, two different manifolds on my s2000 in the years that I owned it and i bought it bone stock from an old guy. I always wanted a supra and the fact that Im a tech for lexus helped me in my decision to buy a hoopra.

 

traitor, I'm just sayin'

 

Correct, you would need a twin-scroll exhaust housing (while keeping the regular flange for the Full-Race Mani). You would get quicker spool-up, but probably see the same top-end power, unless you get a housing (and turbine wheel) that has a larger A/R.

It bolts between the turbo and manifold, but that's where things might get complicated for the FR set-up.... From what I have seen, the turbo already sits fairly close to the frame/engine mount. Adding a spacer of "x" thickness may not work out too well while using that exhaust manifold, so measurements need to be taken carefully. I could see it working on a Sidewinder-style mani more easily, considering the downpipe is modified to the new position for the turbo.

 

that's right, it already too close to the mount. I imagine the only way would be to replace my existing flange on the manifold. But that's a little more fabbing than I want, not to mention voiding the manifold warranty.


Deadzero, if you can make it work, please share.

 

dont wait for me tho, i probably wont be up and running until the end of the year.

Ill chime in tomorrow after i see what my tuner thinks about this. I would definitely like to do it too. 500 bux is worth 500rpms in spool difference

 

You should of bought another S2000 and used a twin scroll or something else newer. The only reprieve I give is if you buy A Z06, ZR1 or R8

So waht are the plans for the Supra? Built motor, TH400, Large single twin scroll......?

 

A twin scroll manifold has the advantage of separating opposing exhaust pulses from adjacent cylinders resulting in no cross contamination. This also increases "scavenging". Both of these will result in quicker spool (than single scroll) and better top end. This valve obviously makes no effort to do either of those thing so you could say I "know" it won't have the same top end.

As for the spool your correct that neither of us know but it's fairly common to pick up around 500rpm of spool switching to twin scroll. That's not to say this wouldn't pick up a bit more, it might. Honestly though who in the S2000 world currently has a power band issue. I have a GT40 on mine and i could shift at 8k and still land in full boost. I'd rather have the top end.

That's ignoring the obvious restrictions of the valve and the divider in the turbo.

 

i want this now