STUMPED having issues with my turbo car
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Joined: Feb 2002
Posts: 167
From: state college pa
STUMPED having issues with my turbo car
Trying to get my 89 iroc twin turbo running right and strugling with it.
The Basics
Twin t3/4 turbos new
Big FMIC
HKS bov
Tial 38 wastegates
3" dp
stock 350L98 with a stealth ram intake
72# inj.
FAST WB ecu
Big fuel sytem etc etc etc
6 speed
Car worked great in the spring was very fast but blew up the stock shortblock with 15# boost because the actuators didn't work properly. So I get the Tial 38 external wastegates. I get a new 02 from FAST since the old one was ruined from the antifreeze. So the problem starts when I put the new stock engine in it this winter and when I fire it up after a couple times in and out of the shop maybe 20 minutes of run time timing it etc a piece of the header weld inside comes loose and the impeller stops spinning and car sounds like it has a horible exhaust leak. I think wtf. I pull the turbo to inspect and and see a large piece of metal stuck in the exhaust impeller. I wiggle the turbo and it falls out the bottom of the turbo. I pull the compresor of and the impeler on the intake side looks perfect. I wip it back on and its works fine no oil leaking seems fine. So I drive it for the first time with the new stock engine and the car feels like it has 120HP and is very slugish and slow. Is it possible the turbo is shot? Could the turbo be acting as a huge restriction now and the other turbo is boosting fine to 5 pounds but making no power? Tial wastegates are set at 5 pounds and working perfect. The compresor side is perfect but i didn't pull the exhaust housing of the turbo I just looked at the exhaust wheel it looked fine. I checked the obvious intake leaks loose hose clamp etc. The turbo still does not leake oil at all and spins fine when idling. I just have the FAST demo running the car it should run ok with it and it idles pretty good. I'am getting ready to send the turbo out to be looked at. The car seriouly only makes about 120hp and won't even spin the tires in the rain. I have the wastegates set at 5# to be safe and when you rev it in 1st gear it goes up to 5# on the gauge and stops like it should but car is a pig my lumina would beat it.
I just thought if the turbo was shot it would leake oil or the impeller wheel would be damaged or locked up?
The Basics
Twin t3/4 turbos new
Big FMIC
HKS bov
Tial 38 wastegates
3" dp
stock 350L98 with a stealth ram intake
72# inj.
FAST WB ecu
Big fuel sytem etc etc etc
6 speed
Car worked great in the spring was very fast but blew up the stock shortblock with 15# boost because the actuators didn't work properly. So I get the Tial 38 external wastegates. I get a new 02 from FAST since the old one was ruined from the antifreeze. So the problem starts when I put the new stock engine in it this winter and when I fire it up after a couple times in and out of the shop maybe 20 minutes of run time timing it etc a piece of the header weld inside comes loose and the impeller stops spinning and car sounds like it has a horible exhaust leak. I think wtf. I pull the turbo to inspect and and see a large piece of metal stuck in the exhaust impeller. I wiggle the turbo and it falls out the bottom of the turbo. I pull the compresor of and the impeler on the intake side looks perfect. I wip it back on and its works fine no oil leaking seems fine. So I drive it for the first time with the new stock engine and the car feels like it has 120HP and is very slugish and slow. Is it possible the turbo is shot? Could the turbo be acting as a huge restriction now and the other turbo is boosting fine to 5 pounds but making no power? Tial wastegates are set at 5 pounds and working perfect. The compresor side is perfect but i didn't pull the exhaust housing of the turbo I just looked at the exhaust wheel it looked fine. I checked the obvious intake leaks loose hose clamp etc. The turbo still does not leake oil at all and spins fine when idling. I just have the FAST demo running the car it should run ok with it and it idles pretty good. I'am getting ready to send the turbo out to be looked at. The car seriouly only makes about 120hp and won't even spin the tires in the rain. I have the wastegates set at 5# to be safe and when you rev it in 1st gear it goes up to 5# on the gauge and stops like it should but car is a pig my lumina would beat it.
I just thought if the turbo was shot it would leake oil or the impeller wheel would be damaged or locked up?
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