TwinTurbo.NET: Nissan 300ZX forum - Blown turbo? Help please!
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Subject Blown turbo? Help please!
     
Posted by blckdrgn on March 16, 2011 at 4:09 AM
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Message Hey guys I hope you can shed some light on this for me. I have an automatic 92 300zx TT and was driving on the freeway at about 60 then hit the gas to pass some people and I think it may have down shifted from overdrive (4th) to second, it started to accelerate quickly like normal then slowed way down, and was shooting TONS of white smoke. The engine sounded like it was running fine but the gas had a weak response after that (I drove it home slowly about 2 miles blinding everyone behind me) and it sounded like one of the turbos was spooling properly but the other sounded like a chunk of something was clinking around when I hit the gas. Temperature stayed normal the whole time.

After parking it all of the oil went out of the side mount intercooler on the passenger side and there was wet oil around the inside of my exhaust tips.

Is it a head gasket? Turbo? Valves? Any idea on the best way to determine what is actually broken? I've seen youtube videos of blown turbos that blow smoke like my car is but they make a loud "dentist drill" noise that I dont hear from my car, I can barely hear my turbo(s) at all now.

Secondly, if it is the turbo, what kind of replacement turbos would you recommend? If I am going to spend $1000+ I might as well upgrade them so let me know what you think would be the best bang for the buck.

     
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