mrx

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

The Weather Man

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

What psi are you running?

mrx

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.

z6

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

JDogg

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

HondaEK9

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

Full-Race Javier

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

mrx

<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.