rattle/no whine from s/c - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-01-2010, 04:15 AM   #1
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Default rattle/no whine from */c

I have a '95 ssei w/ 165,000 miles on it. When it'* at idle you can hear the nose ratteling and no whine when you hit the throttle. I'm only getting 5lbs of boost. The airbox is gutted. How much boost should I be getting? Any ideas why I cant hear my */c? I know I should hear it.
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Old 09-01-2010, 07:56 AM   #2
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The rattle is likely the coupler in the supercharger nosedrive.
As for whine...you have one of the worst airbox designs going in your year with many noise canceling herpes on the accordian tube leading to the throttle body.
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Old 09-01-2010, 08:05 AM   #3
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5 pounds of boost is about right.
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Old 09-01-2010, 03:20 PM   #4
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I thought it was around 9psi?
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Old 09-02-2010, 01:03 AM   #5
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Definitely sounds like the coupler. Not sure how readily available they are for your engine, but they usually come pretty cheap. Changing it involves draining the */c oil, taking the nose off, and replacing the coupler (should just slide off). Should look something like this: spare_coupler.jpg&t=1
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Old 09-02-2010, 01:12 AM   #6
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So a non-groovy intake tube will make louder */C whine?
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Old 09-02-2010, 01:36 AM   #7
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i thought it was 4psi stock well that for mine idk about the series ones
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Old 09-03-2010, 03:38 AM   #8
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I might try and rig up a CAI b/c Im poor and might think about the coupler. How much damage am I looking at if it goes un fixed?? Also what size pulley can I install w/o blowing up?
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