Having decided to change my T3 manifold/GT35R combo with something bigger, i would have decided to go for a T4 divided manifold with, probably, a 4088R turbo, as i consider 42Rs too big for having still some streetable powerband.
Looking at Garrett catalog i've seen a new turbo, the 4094R, that seems a conjunction between 4088 and 4294, and i would be tempted to try this....
Has somebody any experience on this turbo? I'm afraid it could bee too laggy, even with a stroker, but i'm also interested in 850 hp capability as declared on Garrett web site.... Thanks....

 

if your gonna go that big stay 2.0. you will be able to rev much higher.

 

Dam that would be intresting to see i think it just to big.

 

+1 what he said!

 

Procco Evo has one ran a 9.2xx something like that with a 75 shot was it ...I know im not Right, but its something simliar to that.!

 

Slowmotion Motorsports here in Columbus Oh just built a Honda EK Hatch with a K24 bottom end with a K20 head (Acura 2.4L bottom end and RSX-S head) with that turbo on it which would be comparable to a 2.3L Mitsu and it spooled very quick (4500rpm) and made 600whp on only 21psi. So I would love to see this turbo on an Evo...I say go for it!

 

Wow, spooling at 4500 rpms, what kind of safe redline were they seeing? Thats pretty impressive for a 2.4L motor.

 

go for it

 

I can't decide, the twin scroll configuration of that turbo combined with a proper divided manifold should help for spool, i know that it will give massive power, but i'm afraid of having too little powerband....
Mmmh, 4088R or 4094R?
Please, help me....

 

E-mail geoff@full-race.com he should be able to help you out.

Like I told you in a PM, the only thing I've heard about the 4094r is that it spools slower than a 4088r but makes more power. I cant say if they were using a true twin scroll setup though..

Geoff should be able to help you out though, he's helped me more than a few times.

 

Thank you very much for the info, i'll try to contact him...

 

The GT4294R doesn't spool THAT much later then the GT4088R.

If I recall correctly, when I mapped out the GT4094R, it looked like it would surge below 6000 RPM anyway. The GT4294R will be making enough power by 6000 RPM that you really won't care if it has a little extra lag.

The GT4094R does have the advantage of being a smaller (externally) turbocharger though. You can likely shoehorn in the GT4094R without doing a half width radiator.

 

Could you give me an idea about the full boost rpm on the 4094R, i'm a little worrying about lag, the car is not mainly for drag use...
If i could have a decent spool, starting to push hard starting from 4500 rpm or so, that turbo could be the ideal choice for me....
I would be thinking about a 1.06 exhaust AR, as it's a twin scroll turbo, is it a good choice, if combined to a twin scroll manifold?
Thanks...

 

I would look for a smaller a/r than a 1.06 that will surely be laggy even with a stroker!

 

yes Procco has a 4067 which is similar to the "gt37" or pt67 turbo this 4088 has been tried on 2.0 and 2.3 with not much success, too much lag, not enough power. I would go with what works.