LS1 belt problems - Team Camaro Tech
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post #1 of 5 (permalink) Old Jan 16th, 12, 02:59 PM Thread Starter
Senior Tech
AJ
 
Join Date: Jul 2006
Location: AUSTIN TEXAS
Posts: 3,842
LS1 belt problems

Working on an '03 Corvette with an LS1, belt was squealing at all speeds, replaced the belt and it began squealing and eventually ate up the outer edge of the belt (towards the engine side).

I noticed that the belt was not seated correctly on the crank pully, the outer edge (towards the engine) of the belt was partly riding on the harmonic balancer. I seated the belt back into the crank pully again, and checked to make sure the belt was on every pulley correctly, and it was. Within a few revolutions, the belt then slipped off again. Replaced the tensioner, same thing. Belt is new, but now torn on the edge and probably has a groove worn into it. Either way, I've looked at it, and a Chevrolet dealership in East Texas earlier today, the guy said they've had problems with the crank pully, but that seems extremely unlikely.

TLDR: Belt slipping & squaling.

Has anyone experienced this? Where should I go from here, without spending tons of money. The vehicle is completely stock, 50k miles.

Thanks.

The only Mustang I'd ever own is a Fender.

'68 333" Camaro
'14 5.0 Mustang
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post #2 of 5 (permalink) Old Jan 25th, 12, 04:50 PM Thread Starter
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AJ
 
Join Date: Jul 2006
Location: AUSTIN TEXAS
Posts: 3,842
Re: LS1 belt problems

Well, after thinking it was the tensioner and replacing it with no luck, checked the bolt on the harmonic balancer just to see if it was tight, and it was almost completely loose. Couldn't get a wrench or socket to fit because of the steering rack, said screw it. Friend took it to a dealer, new balancer and $600.00 later, it's fixed. I think that's a bit much for labor, but it was a Chevrolet dealer charging $80.00 an hr, and a balancer shouldn't have been more than $130.00 if they didn't have to remove the rack (i'm almost positive you have too on the vettes) he got burned.

Moral of the story is, if you're gonna run 'em hard, check all of your bolts, especially those leaky intake bolts that wiggle out with vibration.

The only Mustang I'd ever own is a Fender.

'68 333" Camaro
'14 5.0 Mustang
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post #3 of 5 (permalink) Old Jan 25th, 12, 06:35 PM
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Steve
 
Join Date: Oct 2009
Location: Cincinnati
Posts: 2,200
Re: LS1 belt problems

i've had the inertia ring walk out on a HB before on a Jeep, did the same thing you mentioned and it took me quite a while to figure out what the problem was. When they are making noise for no know reason now, I will always start by looking at pulley alignment first.

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post #4 of 5 (permalink) Old Jan 30th, 12, 05:24 PM Thread Starter
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AJ
 
Join Date: Jul 2006
Location: AUSTIN TEXAS
Posts: 3,842
Re: LS1 belt problems

Well I spoke too soon, it's doing the same thing again. They apparently replaced the balancer, I've yet to check to see if they actually did or not, other than that I'm completely lost on what it could be, guess it's time to start taking accessories off and ruling the pullies out one by one.

The only Mustang I'd ever own is a Fender.

'68 333" Camaro
'14 5.0 Mustang
ace's68 is offline  
post #5 of 5 (permalink) Old Jan 30th, 12, 06:16 PM
Senior Tech
Steve
 
Join Date: Oct 2009
Location: Cincinnati
Posts: 2,200
Re: LS1 belt problems

you need to run a straight edge across pulley fronts to see if one is out of line from the others, either at an angle or out of plane.

69 Pace Car and 69 Hard top
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