SC Pistons - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-19-2003, 10:39 PM   #11
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What type of noise would you say that is?? B/C i hear a whiney noise ..but im almost positive thats normal..
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Old 02-19-2003, 10:41 PM   #12
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That whine is trademark. That'* the sign of a force-fed engine. They all whine. You should be able to hear it in the cockpit. What you want to listen for is a rattling at idle....an indication of a supercharger coupler going out (not likely with your car yet) or a grinding/rumbling.....bad sounds. If you don't have these sounds, and do have the whine, and you're making 9-10 psi of boost, you're in good shape!
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Old 02-20-2003, 08:03 PM   #13
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Well i'm in good shape, thanks man..your'e the best.
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Old 02-24-2003, 10:00 PM   #14
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Haha, no prob. If i have any more encounters with dumbasses, i'll let you know. Peace guys.
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Old 02-24-2003, 10:58 PM   #15
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I think this comes from the early superchargers, like on the 92-95 models, which tend to leak. Once the oil all leaks out, the bearings are no longer lubricated and grind themselves up. I don't think people knew how to maintain the */C. The owners aren't totally to blame. Pontiac did not include */C maintenance in the 92 or 93 maintenance schedules that came with the car.
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Old 02-25-2003, 02:03 AM   #16
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Fuddy nailed it. Mine is that way. The SC cars, at least Series 1, were the ugly stepchild at the dealer. It took the production numbers sparked by the GP to make it mainstream.
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