Cogged Belts
#1
Cogged Belts
I replaced the belts on my 86 Custom Cruiser a few months ago with cogged belts (that's all I could find). No matter what I do, they still squeal under hard throttle. I've seen a lot of them that have the cogged side up instead of down (what I have now). I assume this is to help them get better traction? Do you simply just turn the belt inside out?
Thanks!
Thanks!
#2
I feel your pain... These stupid cogged belts are becoming the norm these days.
I do not know why, either. (less material to make 'em cheaper????)
They stretch a lot easier, I do know that. They suck, to sum it all up.
Do you know which is squealing? The only one that I have trouble with is the A/C belt when the compressor is running. My alt belt squeals a tad right after startup when the battery is a bit low. I never tried mounting them inside out, the v must fit nicely in the pulley. The edges should be making the most contact, not the inner flat part. It is possible they may not be made right from the beginning.
I assume they are all tight enough (1/2" deflection upon pressing down in the middle of the belt's run.
You may try removing the belts (I know it is a pain) and cleaning the pulleys very well to rid any oil or grease, along with the belts, themselves. You might be able to do it with the belts on, by just 'bumping' the starter to turn the engine over a fraction of a turn. A good degreaser should work okay.
I do not know why, either. (less material to make 'em cheaper????)
They stretch a lot easier, I do know that. They suck, to sum it all up.
Do you know which is squealing? The only one that I have trouble with is the A/C belt when the compressor is running. My alt belt squeals a tad right after startup when the battery is a bit low. I never tried mounting them inside out, the v must fit nicely in the pulley. The edges should be making the most contact, not the inner flat part. It is possible they may not be made right from the beginning.
I assume they are all tight enough (1/2" deflection upon pressing down in the middle of the belt's run.
You may try removing the belts (I know it is a pain) and cleaning the pulleys very well to rid any oil or grease, along with the belts, themselves. You might be able to do it with the belts on, by just 'bumping' the starter to turn the engine over a fraction of a turn. A good degreaser should work okay.
Last edited by Lady72nRob71; December 24th, 2009 at 08:58 AM.
#3
I'm pretty sure it's the PS belt. In the morning when I'm pulling out of the driveway, the steering is kinda stiff and goes away after the car is warmed up. I had the same issue on my Toronado but after I tightened the belt it was fine. I have all the belts tight and it's gotten better but still squeals. When I first got the wagon the cogged side of the belt was facing up...and I thought someone made a mistake...haha. Now I know why they did it.
I will take them off and clean the pulleys too. I'll see if turning them inside out works...obviously as long as it fits in the pulley ok.
I will take them off and clean the pulleys too. I'll see if turning them inside out works...obviously as long as it fits in the pulley ok.
#4
If you go to the Gates web site you can do a search and find belts that do not have the cogs. You need to know the length of the belt your replacing. You can do a cross reference to find them. I have non-cogged belts on my 455 in my 57, no noise and the belts stay tight. I ordered my belts through the Rock Auto web site and bought an extra set to store in the trunk of the car. Now no worries
#8
the internal cogs are able to flex easier around a small diameter pulley with increased contact area. I sold Dayco Top Cog belts for years. They were advertised to run cooler because of the cogs. I wonder how much of that was a marketing gimmick.
`
#9
Here's a pic of before I took the old belts off. You can see the cog side out...but it looks like it's flat and not V shape...so makes me wonder if the belts were designed for cog side out and not just turned inside out...
![Confused](https://classicoldsmobile.com/forums/images/smilies/confused.gif)
#12
when the contact area gets glazed, there's nothing that will shut them up permanently except to replace them. over tightening the belts will put a strain on bearings and bushings. I suggest premium Goodyear belts
#13
I'll tell you what, I've got the same problem on my 83 Custom Cruiser. V-belts(cogged). First, it was the alternator belt. I knew because when it squealed, my voltmeter dropped. I replaced it, seems no amount of tightening would fix it. With the belt off, I ran the motor. I think my AC/smog is squealing too. If I were you, I'd replace the belts with some Gates corded belts. All of them. Tighten to specification and the problem should go away.
--Ryan
--Ryan
#17
Customer, "Is there anything wrong"" ..?
You," The belt squeels " ...
#18
#19
If you go to the Gates web site you can do a search and find belts that do not have the cogs. You need to know the length of the belt your replacing. You can do a cross reference to find them. I have non-cogged belts on my 455 in my 57, no noise and the belts stay tight. I ordered my belts through the Rock Auto web site and bought an extra set to store in the trunk of the car. Now no worries
#20
Ah ok...I'll have to try a bar again to tighten it. Not sure I have one that will fit. I've just used good ole elbow grease before...but for some reason I can't get it tight enough on the wagon...maybe because the hood is wider so it is harder to push on it...haha.
#21
Eureka! I solved the problem. I tried to tighten the belt (again) and no matter how much I tried, it would not get tight enough. The pump was tensioned as far as it would go...so I thought I'd try a new belt. I went to Checker and bought a Gates XL...first of all, what a difference in quality compared to the Duralast from Autozone...the Gates was much softer and felt a little "stickier" if that makes sense. Plus it's made in the USA, not Korea...lol.
Fit like a glove and now all is well. Yay!!
Fit like a glove and now all is well. Yay!!
![Smile](https://classicoldsmobile.com/forums/images/smilies/smile.gif)
#22
I went to Checker and bought a Gates XL...first of all, what a difference in quality compared to the Duralast from Autozone...the Gates was much softer and felt a little "stickier" if that makes sense. Plus it's made in the USA, not Korea...lol.
Fit like a glove and now all is well. Yay!!![Smile](https://classicoldsmobile.com/forums/images/smilies/smile.gif)
Fit like a glove and now all is well. Yay!!
![Smile](https://classicoldsmobile.com/forums/images/smilies/smile.gif)
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