Re: Belt Squeal HELP!!!
[Re: poorboy]
#2914709
04/25/21 11:36 AM
04/25/21 11:36 AM
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Joined: Jan 2003
Posts: 15,408 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,408
Omaha Ne
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First off i agree with trying to isolate the offending accesory. Second, you say it was fine for 30K miles. What change (s) did you make that caused the noise to appear ? I have read that the Gates cogged type v belt has solved several squealing issues. One does have to pay close attention to the angles of the pulleys and belts as they do vary and a mismatch can drive one around the bend. one might also try calling gates to get their input
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Re: Belt Squeal HELP!!!
[Re: TJP]
#2914730
04/25/21 12:25 PM
04/25/21 12:25 PM
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Joined: Sep 2014
Posts: 1,408 Central Pa
moparjim79
pro stock
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pro stock
Joined: Sep 2014
Posts: 1,408
Central Pa
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First off i agree with trying to isolate the offending accesory. Second, you say it was fine for 30K miles. What change (s) did you make that caused the noise to appear ? I have read that the Gates cogged type v belt has solved several squealing issues. One does have to pay close attention to the angles of the pulleys and belts as they do vary and a mismatch can drive one around the bend. one might also try calling gates to get their input While totally out of most everyone's budget for such a project, Gates does make a laser alignment tool that is awesome. If you know anyone who is an industrial mechanic, see if they have access to one. Belts can be funny, to tight, they may squeal or chirp, to loose and they can and will jump or both instances can cause shredding and depositing of belt material on the pulleys, which will usually ruin them. Somebody on here posted a great visual aid for pulley groove inspection also. However, as one said before, it almost sounds like a beat bearing.
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Re: Belt Squeal HELP!!!
[Re: moparjim79]
#2914743
04/25/21 12:50 PM
04/25/21 12:50 PM
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Joined: Jan 2003
Posts: 4,275 Morrow, OH
markz528
master
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master
Joined: Jan 2003
Posts: 4,275
Morrow, OH
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While totally out of most everyone's budget for such a project, Gates does make a laser alignment tool that is awesome. If you know anyone who is an industrial mechanic, see if they have access to one.
I agree that the lasers are awesome. A Moparts member gave me a modern one made for serpentine belts. I machined some holders for a v belt pulley and a target when I was doing my 65 Fury cop car with a Leece Neville alt. Its got a huge belt run and I had to make the alt brackets as I could not find any. This system used 2 separate idlers. Was really having trouble till I got the laser.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Belt Squeal HELP!!!
[Re: moparx]
#2914803
04/25/21 03:05 PM
04/25/21 03:05 PM
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Joined: Jan 2003
Posts: 4,275 Morrow, OH
markz528
master
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master
Joined: Jan 2003
Posts: 4,275
Morrow, OH
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do you use two belts on one accessory ? if so, you need a "matched" pair, not just two of the same number. i found this out after squeals and belt departures. I had the problem with the "matched pair". My parts store did make good though.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Belt Squeal HELP!!!
[Re: TJP]
#2914966
04/25/21 10:17 PM
04/25/21 10:17 PM
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Joined: Jan 2003
Posts: 4,275 Morrow, OH
markz528
master
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master
Joined: Jan 2003
Posts: 4,275
Morrow, OH
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I did a similar thing but used a different approach. I like the ball bearings to center the target. How did you align / center the laser to the pulley ? I made a pin in the center out of aluminum. I taperd it to match the pulley taper. In the aluminum I put a strong magnet. I move the pin up and down till the laser holder/target is solid then lock it in place. The laser is held to the adapter with the magnets in the laser. I made an adapter for each size pulley. The center magnet keeps it all in place on the pulley. It does help that I have a CNC mill so its pretty easy for me to make.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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