The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   The 1960 - 1966 Chevrolet & GMC Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=6)
-   -   Stupid Belt Noise (https://67-72chevytrucks.com/vboard/showthread.php?t=616970)

K98AL 02-17-2014 09:54 AM

Stupid Belt Noise
 
I've got a 1962 235, and the belt noise is driving me nuts.
The Crank pulley looks a little wider than the water pump and alternator pulleys. (the belt is farther "down" into the crank pulley)
I can squirt a little belt dressing on and it gets silent (heaven!), but only for a minute. The alignment looks right, and the belt is tight. Is there an easy fix?

firemanjimtfd 02-17-2014 11:46 AM

Re: Stupid Belt Noise
 
I have used a old trick of rubbing bar soap on the belt .

TJ's Chevy 02-17-2014 12:02 PM

Re: Stupid Belt Noise
 
I had the issue slightly when I had the 40+ year old belt still on....I got one of Napa's premium belts and even on cold mornings nothing squeaks. My pullleys are a little narrower I think. :chevy:

K98AL 02-17-2014 01:44 PM

Re: Stupid Belt Noise
 
I put a new, premium belt on - helped, but not 100%
I'll try the soap - thanks Jim.

T and S 02-17-2014 02:53 PM

Re: Stupid Belt Noise
 
Belt noise can also be caused by the pulleys being worn out. The belt will actually slip as it goes around the pulley no matter how tight the belt is.

markeb01 02-17-2014 04:22 PM

Re: Stupid Belt Noise
 
It is likely the pulleys are not compatible. I no longer remember the angles, but the really wide original pulleys may have required a 40 or 45 degree side angle on the belt. I think the newer (thin) belts were pretty standard at 37 degrees (or something close to that). The only permanent cure may be replacing that lower pulley with one that matches the water pump and alternator.

Sharps40 02-17-2014 04:23 PM

Re: Stupid Belt Noise
 
Same here....I've learned to love it...sounds like a gear drive cam shaft....increasing in pitch with rpm till eventually it blends in with the sound of a cinderblock wall being pushed thru a hurricane at 70 mph!

Check pully alignment....I tweaked my alternator position with shims and thinning of the bracket tab and eliminated a buncha that whine.

61_FL_Apache 02-17-2014 07:45 PM

Re: Stupid Belt Noise
 
Make sure all the pulleys are lined up too.

LVPhotos 02-17-2014 10:02 PM

Re: Stupid Belt Noise
 
Take the "Shine" out of the pulley with sandpaper or the like. Stop using belt dressing it just makes it slip more.

K98AL 02-18-2014 08:58 AM

Re: Stupid Belt Noise
 
Thanks for all the advice!


All times are GMT -4. The time now is 08:10 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com