SC Pistons - 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 02-18-2003, 09:36 PM   #1
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Default SC Pistons

Ok when i was talkin to this guy at a car dealership about my car..he said at around 100k miles..the pistons (ithink) will blow in my SC. Anyone know what he'* talking about and what i should do to prepare.. Thanks.
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Old 02-18-2003, 09:44 PM   #2
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I think he was trying to sell you a car.
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Old 02-18-2003, 09:48 PM   #3
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Quote:
Originally Posted by complinitor
I think he was trying to sell you a car.
I would have to agree. We have 647 members here and I don't know of one that has had that problem, and most cars of that age are at or over 100k miles on them. If you take care of your car I don't think you have anything to worry about. :P
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Old 02-18-2003, 10:13 PM   #4
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Well consider this as an answer! I work as a BACK PARTSMAN for a PONTIAC DEALERSHIP for OUR SERVICE CENTRE! This is the FIRST I've heard of this!
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Old 02-18-2003, 10:25 PM   #5
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Power hit here. How many stars is this?

Most of these superchargers will probably outlast the rest of the drivetrain if properly cared for. Amazing, considering how fast they spin. The worst thing that can happen is for a rotor bearing or rotor shaft to wear. This induces slop to the point where the rotors would contact each other or the housing. Bad! BUT....you'd know it if it happened.

Other than that (which I've never seen until recently), the only other mainenance items are a routine bearing replacment, sloppy coupler (30 bucks at zzp), and oil change. I've never heard of gear damage, and at 80k, mine looked brand new.

The only reason you would ever change the whole nosedrive would be if you didn't feel comfortable replacing the coupler and bearings yourself, but even that would happen alot less often than 100k or 150k if properly cared for.
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Old 02-19-2003, 12:40 AM   #6
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90% of the employees at dealships come from hell.
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Old 02-19-2003, 01:43 PM   #7
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The dealer was trying to scare you into buying something from him. But lets put this in perspective. A $2000 supercharger is still cheaper than a $7000-$15000 car (Assuming he was a used car salesman) or a $13000-$30000 car (assuming he was a new car salesman). Ad in the negative equity you currently have in Alien II, you can see that even if you purchased a new SC, you still come out ahead!

All that asside, your SC should last a long while. I know of two members who changed their SC'* out--one to a FLOZ as an upgrade (ask Will about that), and one to a rebuilt unit due to low boost. Neither one of them had any catastrophic failure. It can happen if you don't perform maintenance on them, run them without oil with a pulley that is way too small, and over rev the engine consistantly, but it isn't common and chances are that if you do those things, the rest of the engine will fail first.

Tell that polyester suit wearing, money hungry, unscrupulous salesman that his claim is ludicrous, and that you would never purchase a car from a dealer that he works for.
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Old 02-19-2003, 08:59 PM   #8
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Quote:
Originally Posted by Allmachtige
90% of the employees at dealships come from hell.
HEY watch it! I work for GM remember! Or that next P/N you get might be your last! LOL
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Old 02-19-2003, 10:12 PM   #9
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Let me correct my statement..i meant the supercharger berrings.
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Old 02-19-2003, 10:17 PM   #10
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Bearings? Probably 200k if properly maintained and driven. Hard to say. Worry about it 20k miles after it starts making noise.
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