PDA

View Full Version : Boost Spike Damage

zizrac
03-27-2005, 09:24 PM
I need some tech troubleshooting after a very large boost spike. I've been running 13lbs and a very unfortunate situation led to a 28lbs spike.

The only reason my engine is still running is because I think my Garrett GT35R turbo popped before I had time to even react to the spike...I'm thinking good thing it did. I assume it popped because I no longer have boost. So my first question is, can a turbo be dead even if it still spins? I pulled it off the car and I can spin the wheel without any noticeable damage to the fins or bearings.

Second problem is that I could not get my engine over 5K rpms. It starts, idles, and runs fine till that point. I was thinking the damaged turbo was restricting airflow, but since it spin ok I'm having second thoughts about my motor being ok. Do you think I damaged/popped my motor too?

My last question is, do you know where I can get a GT35R...Cheap!! (.82 A/R Turbine) Thanks for your help.
AusTexRex
03-28-2005, 04:48 AM
I would bet that your turbo survived and that your motor popped if not you're really lucky.
zizrac
03-28-2005, 08:28 PM
I do consider myself extremely lucky. The pressure popped off a hose and not my turbo or motor, which are surprisingly working just fine. I never want to do that again.
AusTexRex
03-29-2005, 06:52 PM
Good thing you were slightly leaking boost then. Pressure test the system and seal up those boost leaks, if it was properly sealed something else would've blown.
OneOfFew
03-31-2005, 04:22 AM
Don't forget to put the hose on the wastegate.
mavrick420
05-08-2005, 06:33 PM
Second problem is that I could not get my engine over 5K rpms. It starts, idles, and runs fine till that point. .

What does your motor do when you try to rev it past that point?
Canaduh
05-09-2005, 04:43 PM
Good thing you were slightly leaking boost then. Pressure test the system and seal up those boost leaks, if it was properly sealed something else would've blown.

I wouldn't call a spike to 28lbs a slight leak :twisted: [/i]
black rocket
05-09-2005, 10:47 PM
"Second problem is that I could not get my engine over 5K rpms. It starts, idles, and runs fine till that point. I was thinking the damaged turbo was restricting airflow, but since it spin ok I'm having second thoughts about my motor being ok. Do you think I damaged/popped my motor too?"

Ck'd your wastegate/actuators?