Belt squeal solved
Thread Starter
Melting Slicks
Joined: Sep 2005
Posts: 3,082
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From: eagle mountain utah
Belt squeal solved
AFter running my belt too tight, it started to squeal. I didn't know it was too tight, but it's the only explanation. When it started to squeal, a well meaning person sprayed belt dressing on it and for a minute it stopped. Then it howled. I changed the belt for a new one and problem solved.
I think, 99% sure, that when a belt is run too tight, it overheats and stretches. Belts are designed for cars that don't have accessories that require 80 hp like my D1SC. Just an alternator and water pump, etc. So its easy to overtighten. I think the rubber on teh back of the belt hardens and perhaps even starts to crystalize from the heat. Then you have a hard surface riding on a metal pulley and the result is squeal. So I threw away the belt dressing. Any other explanations?
Spoke too soon. Squeal is back.
Update: It may be that the sc pulley fits too loosely on the shaft. It comes off without having to heat it with a torch.
I think, 99% sure, that when a belt is run too tight, it overheats and stretches. Belts are designed for cars that don't have accessories that require 80 hp like my D1SC. Just an alternator and water pump, etc. So its easy to overtighten. I think the rubber on teh back of the belt hardens and perhaps even starts to crystalize from the heat. Then you have a hard surface riding on a metal pulley and the result is squeal. So I threw away the belt dressing. Any other explanations?
Spoke too soon. Squeal is back.
Update: It may be that the sc pulley fits too loosely on the shaft. It comes off without having to heat it with a torch.
Last edited by leojnknsC5; Jun 26, 2006 at 09:02 AM.
Drifting
Joined: Apr 2002
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From: Stealth So Cal GOCC ...comming to invade your neighborhood soon
Originally Posted by leojnknsC5
AFter running my belt too tight, it started to squeal.... Any other explanations?
Thread Starter
Melting Slicks
Joined: Sep 2005
Posts: 3,082
Likes: 0
From: eagle mountain utah
The kit was purchased in April 2005 with the thicker brackets but twin IC. The tensioner does look like it pulls toward the radiator. Is there a better tensioner?
Update: The sc pulley may not be tight enough on the shaft. It is supposed to be removed by heating the pulley with a torch, my pulley slips off without heat.
Update: The sc pulley may not be tight enough on the shaft. It is supposed to be removed by heating the pulley with a torch, my pulley slips off without heat.
Last edited by leojnknsC5; Jun 20, 2006 at 05:28 PM.
Racer
Joined: Apr 2004
Posts: 282
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From: Cumming GA
I tried an A&A bracket, but when I went to a D1SC from a P1SC I couldn't get it to adjust enough so I threw it out and got the new ATI Procharger bracket, did have to add some shims to get the alignment right, but it works great and easy to adjust.
Advanced
Joined: Aug 2004
Posts: 56
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From: Houston Texas
Mine started squealing shortlty after starting for the first time.
Maybe I am stupid...but how do you shim to correct pully alignment.
I also noticed when I loosened the 1/2" bolt holding the tensioner arm to the bracket the noise lessened.
Maybe I am stupid...but how do you shim to correct pully alignment.
I also noticed when I loosened the 1/2" bolt holding the tensioner arm to the bracket the noise lessened.
Advanced
Joined: Aug 2004
Posts: 56
Likes: 0
From: Houston Texas
Finally solved mine...The belt was rubbing the lip of the tensioner, I added two very thin steel shims (roughly 1/16" total) and moved the tensioner toward the radiator....no squeaks and the belt is tight.
Can wait to burn up my clutch.
Can wait to burn up my clutch.
