UPDATE ON RATTLE !!!!!!!!!!!!! - 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 07-28-2003, 07:08 PM   #1
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Default UPDATE ON RATTLE !!!!!!!!!!!!!

well guys, it ended up not being the coupler after all. i took all the belts off today, just to double check every thing. to my surprize, the outer ring on the balancer was loose, the rubber elastisimer was broken, ordering a new balancer tomorrow.
for anyone that has a rattle at idle, defintly check the balancer too before you rip the supercharger apart.
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Old 07-28-2003, 07:11 PM   #2
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Ok, which one is the balancer?
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Old 07-28-2003, 07:24 PM   #3
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the pulley on the crankshaft.it absorbs the harmonics produced by the engine
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Old 07-28-2003, 07:26 PM   #4
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Ok, so the crank pulley is the balancer.
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Old 07-28-2003, 07:29 PM   #5
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yes, this little thing does alot. it is the drive pulley for both belts, it absorbs harmonics in the engine, plus it has the interupter on the back side that give you the sync and crank signal.
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Old 07-30-2003, 11:06 PM   #6
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ok guys. i think that everyone needs to check this out.
i replaced my balancer today. the entire rubber was broken out. GM has redesigned the replacement balancer. the rubber is no where near as wide as the old one , giving it more stablilty. it wont fly off when it breaks the rubber. i would have to say that is was going for some time. this also could have been some of the knock retard i was getting too. then when it wore enough of the rubber out, then it rattled, also moving the balance point too. i got the balancer for 129 bux. the old balancer, the rubber ring was aprox 1" thick. the new one is maybe 3/16-1/4" thick. almost like a small block chev. balancer.
if you have time and a series 1 motor, please check your balancer. the local part store i go too for speed parts, the guy that owns it has a 2002 impala, fully decked out. he has other 3.8 cars too. he told me tonight that he has had like 5 cars that he had to replace the balancer on due to this.
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Old 07-31-2003, 02:52 AM   #7
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What exactly should I look for to tell if it'* bad?
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Old 07-31-2003, 10:33 AM   #8
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$129...where did you get that one, Jeff...I paid $200 something thru the dealer..DAMN..
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Old 07-31-2003, 07:11 PM   #9
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we have a dealer deliver to us 2 times a day at the shop. they changed the part number and redesigned it too. also the old number listed for 217.63. the new number lists for like 155.00. our cost at work was 129.00 , so my boss sold it to me at cost

also, are you still looking for a 92-93 TB. i have one sitting here if you wanna make me an offer
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Old 08-01-2003, 02:43 AM   #10
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What is the new number?
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