Hallo,

i replan my setup currently to realize some lower top hp numbers and gain some spool up time for better daily drivability.

now i have my old intercooler and want to know if there are and major disadvantages for a setup which will be producing around 300-350whp. My major concern is about the spool up and throttle response.

my intercooler is 27" x 10" x 3" ...

hope to get some serious informations.
Best regards

 

I'm assuming it depends on the pounds you're pushing through the charge pipes.

What psi are you running?

 

i think will be take the tubo to it's efficiency limit... i guess something like 20-21psi on the track... mabe something arount 14-16psi daily driven

GT28RS .64ar turbine housing (because of spool up time) on a B16 engine.

 

no disadvantage unless its a shitty i/c and costs you alot of pressure loss

 

that 0.63 ar is gona SUCK... that thing isnt gona make power past 7500 rpms.. the 86a/r spools so fast its almost violent.

a big i/c takes longer for the turbo to fill up w/boost.. it will add a touch of lag

 

the bigger the intercooler the longer it takes to spool the turbo

 

an oversized fmic can also reduce the airflow to the other important heat exchangers....rad, condenser, oil/ps/trans cooler etc. most 3.0 in thick cores with normal fin density work well on a street car though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">that 0.63 ar is gona SUCK... that thing isnt gona make power past 7500 rpms.. the 86a/r spools so fast its almost violent.

a big i/c takes longer for the turbo to fill up w/boost.. it will add a touch of lag</TD></TR></TABLE>

Hi,
yes i know that the .63ar will kill some top end, but, i rev the car only to 8000rpm and when i loose some topend for the last 500rpm it doesn't care. its far more important that the turbo spools very early (and with very early i don't think about 4000rpm)

i have a friend with a GT28RS .82ar on a B16 and the lag is too big in my eyes for my application.
i have tuned another car with a GT28R on a B16 and the spool up was amazing, just like i want it, but i have to take a T3 Exhaust housing because of my manifold and i want a bit more hp then the GT28R can deliver.

I asked Jeff Evans and he said, that i can make ~325whp on a 28RS .63ar which is enough for me... even if i loose some top end tourqe. But if anyone has a dyno sheet or first hand informations about the 28RS .63ar i'am glad to hear about them.

Thanks
Malte.