Sqealing belt problem - Team Camaro Tech
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post #1 of 9 (permalink) Old Jul 30th, 14, 03:37 PM Thread Starter
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Don
 
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Sqealing belt problem

No matter what I do seems the belts have to squeal. Changed belts changed alt pully, changed distributor which was making same sound as belts.

Whenever I get the engine up to operating temp like driving for 10 miles or so it really gets loud. So tired of the wretched noise.

How do you tell for sure where what is causing the problem.?
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post #2 of 9 (permalink) Old Jul 30th, 14, 05:28 PM
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Re: Sqealing belt problem

Belt dressing would be a temporary fix...
If you put on NEW belts and still have issues, my guess is that you either have misaligned pulleys or there is grease/oil or some other contaminant in the pulley grooves.

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post #3 of 9 (permalink) Old Jul 30th, 14, 08:17 PM
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Re: Sqealing belt problem

distribnutor was making the "same sound as the belts"?

Are you sure it is a belt problem, and not something else?

Does it start immediately at start u. when cold? if o, try taking the belts off completely, and start the motor (don;t run it for any length of time without cisrculating the coolant, but at least the initial start up (without belts) will tell you if it is a belt squeal or some other issue (like bad bearings in the water pump or on the alternator)...

Keith
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post #4 of 9 (permalink) Old Aug 1st, 14, 06:21 AM
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Re: Sqealing belt problem

Do the belts loosen off after the drive, if yes then I would suspect alignment of the pulleys, or a broken bracket, If they are still tight after the drive, check the voltage regulator, it could be trying to maintain a maximum out put for the alternator, Is there an AC compressor that is seized, What kind of car, engine, are we talking ?
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post #5 of 9 (permalink) Old Aug 1st, 14, 03:48 PM
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Re: Sqealing belt problem

It'd be nice to have a picture of the setup. If you've got the alternator mounted to the exhaust, and have one long bracket for the adjustment which goes to the top of the alternator, it's more than likely flexing. Also, as others stated, most aftermarket setups need to be shimmed to be aligned properly. If you've got a small block, I'd go to a pull-a-part yard and rip off the front drive of a vortec truck/suv engine and throw it on, you get a serpentine setup for under $300, and it's alot smoother feeling than a vbelt setup.

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post #6 of 9 (permalink) Old Aug 1st, 14, 04:14 PM
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Re: Sqealing belt problem

putting aside misalgnment for the moment.. assuming thats good

Simple way to find which belt... pour a little water on .. sounds goes way , thats the offender.

1/ does the belt profile match the pulley profile specs?
2/ If duel pulley then make sure the batch numbers on the belts are the same... they NEED it be a 'matched 'pair so they torque up with equal stretch/ pressure.

My Spelling is not incorrect...it is creative

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post #7 of 9 (permalink) Old Aug 1st, 14, 04:46 PM
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Re: Sqealing belt problem

Could be bearings in WP?

You are throwing me for a loop with the Dist.
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post #8 of 9 (permalink) Old Aug 28th, 14, 06:54 PM Thread Starter
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Don
 
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Re: Sqealing belt problem

Squeal has been found,,,,wouldnt believe it if hadnt seen it. Was so perplexed I took it to a local shop to look at it seeing how they had a few tools I dont.

Of all things it turned out to be is,,,,,the different valve covers the last mechanic put on it sealed to well I guess. It was vaccum in the crankcase and when he took the filler cap off it disappeared. So I need a vented filler cap if there is such a thing. A million years I could have looked and not found that one. He said he thought the squeal was sucking air past the front and rear seals.

These valve covers are the fancy finned alum M/T covers. Any suggestions as to a proper vented cap????

Sometimes you just slap your head and say DUH!!!!! How can I be so dumb???
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post #9 of 9 (permalink) Old Aug 28th, 14, 07:50 PM
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Re: Sqealing belt problem

I don't know anything about the filler cap that you have on current covers but , the stock style finned SS & Z covers, have such a vented oil filler cap, its the simple 1/2 turn to lock. Might look at one and see it will work.
If not, you may be able to drill a very small hole between the paper gasket and cap.

But then, Is you pcv valve working or correct one, Do you have a crank vent to air cleaner hose?

Picture of your covers?

Don
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