'91 964 Turbo ???

jtkkz · 07-16-2005, 10:39 PM

Question:

My friend installed a Full GHL exhaust system

It idles and drives fine for 10 minutes and once car gets to operation temp. it starts loosing boost, and car does not want to idle and eventually dies.

Has anyone have installed one of this exahust system on there turbo 964?

Diverwes · Diverwes's Garage

You mean like this?

nekbet · 07-20-2005, 02:00 PM

Was it a full exhaust? If so, and you had the wastegate and everything out, could it be stuck open/closed/loose?

My guess is that some turbo-hardware-item is not hooked back up properly.

strokher racing · 07-22-2005, 04:49 PM

Start checking for leaks.

db_in_qld · 07-24-2005, 07:43 PM

Hey JTKKZ, did you find out what was going wrong? I have an aftermarket exhaust on my '86 930 that looks almost identical to the pic above. Occassionally I lose boost or get none at all, but I I've traced this to the wastegate...

jtkkz · 07-24-2005, 10:03 PM

My friend fount the O-ring gasket where the intercooler is mounted on (throttle body) is cracked.

He will be replacing it as soon as the part comes in.

Hopefully this solves the problem

strokher racing · 07-25-2005, 05:11 PM

That is a common area of leakage

Several buddies have found that to be the cause of their problems as well

Eric Hood

jtkkz · 07-27-2005, 08:04 PM

Well that solved that problem, I actualy got a chance to drive it today and that's fast.

I drove it with the stock exhuast as well and what a big difference that made.

jtkkz · 07-30-2005, 08:25 AM

pic of my friends car