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Registered
Join Date: Sep 2002
Location: Tulsa, OK
Posts: 134
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'79 Turbo Noise
I had posted a few weeks back about my '79 930 making a knocking or clunking noise when the turbo kicks in. I received some great information about the bypass valve gaskets and a series of really good photos on how to change them out. I just got a chance to change them. (The old ones, however, were in good shape) I installed the new ones but, to no suprise, the noise is still there.
Does anyone have any other ideas what this noise could be. It kind of sounds like an exhaust pipe banging on somthing. The car has 63K miles and is originall. Thanks, DLG |
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12-08-2002, 12:16 PM
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Registered
Join Date: Dec 2001
Location: MA USA
Posts: 2,938
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It is very hard to diagnoss engine noises from here.
Is the exhaust hitting something? Could be a broken head stud.
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Dean 911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno, |
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12-08-2002, 12:59 PM
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Registered
Join Date: Jun 2001
Location: Sweden
Posts: 5,911
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What kind of noise is it? If it's popping on boost it could be the pressure-leak somewhere between turbo and the intake.
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Thank you for your time, |
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12-08-2002, 04:34 PM
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Join Date: Jan 2002
Posts: 650
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DLG,
Knocking under boost......could very well be a broken head stud. Jack one side of the car up (R/L, this will minimize oil lose) and pull the valve covers (the lower, almost always a lower stud fails), look for the pieces or check the torque on the head studs. Tinker. |
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12-08-2002, 06:02 PM
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