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belt throw after a cam swap

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Old Feb 18, 2008 | 10:47 PM
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Default belt throw after a cam swap
anyone know how to fix a belt throwing problem? I just had the cam in sig put in, and I am very happy except tonight it threw the drive belt. Its a $40 Dayco belt Is this where the solid tensioner that Katech makes comes in?
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Old Feb 18, 2008 | 11:04 PM
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Are all the pulleys lined up? Definitely check that the crank pulley is on all the way.

Of course a Katech tensioner would be nice...
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Old Feb 18, 2008 | 11:09 PM
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yeah something is not right there
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Old Feb 18, 2008 | 11:11 PM
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Being the cam swap went down my money would be on the crank pulley. Take a look.
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Old Feb 18, 2008 | 11:13 PM
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Im pretty sure its on all the way... Ive been beatin on it since Sunday (the car)..I think it just threw it from the power lol at least I hope that is it...
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Old Feb 18, 2008 | 11:27 PM
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Originally Posted by LS1Silverado05
Being the cam swap went down my money would be on the crank pulley. Take a look.
I'm willing to bet your right on the money.

I doubt the belt came off from the power. One of your pulleys are not lined up right, and I bet its the crank pulley.
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Old Feb 19, 2008 | 05:30 PM
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I looked at the pulley and in conformation to the other pulleys, it does look a touch further towards the front of the car. hmmmm....dont know if that is the stock setup though...
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Old Feb 19, 2008 | 05:54 PM
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doubt its the crank pully unless its seriously off. (like 1/16-1/8 off) but i doubt a hair will mess with it. my money is on the higher RPM's. mine came off at the track with the stock tensioner pulley shifting at 6k RPM, i bought a bigger dayco pulley and it never came off again.

search for dayco idler pulley or tensioner pulley something to that nature and youll get the part number. its off a newer buick regal or something like that.
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Old Feb 19, 2008 | 05:56 PM
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here:

https://ls1tech.com/forums/showthrea...o+idler+pulley
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Old Feb 19, 2008 | 06:53 PM
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thank you! someone with some insight! it was taken to 6500RPM right before I noticed it half way off at the gas station...that was probably it...
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Old Feb 19, 2008 | 09:44 PM
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checked the crank pulley...its on there all the way... high RPM belt throw about sums it up...
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Old Feb 19, 2008 | 09:52 PM
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Make sure u didnt bend the lip of the pulley while removing/installing it!
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Old Feb 19, 2008 | 10:11 PM
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no! the pulley is GOOD...I am gonna check out the billet pulley with higher walls from RevXtreme: http://www.revxtreme.com/specials.htm
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Old Feb 19, 2008 | 10:16 PM
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Are you running an underdrive crank pully? If you are, you need a shorter belt.
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Old Feb 19, 2008 | 10:20 PM
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if he had the stock belt on with a 25% UDP, it would probably squeel like a **** or not even tighten up.
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Old Feb 19, 2008 | 11:34 PM
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Still bet It's the crank pulley.................
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Old Feb 19, 2008 | 11:43 PM
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Originally Posted by BlackZ28629
anyone know how to fix a belt throwing problem? I just had the cam in sig put in, and I am very happy except tonight it threw the drive belt. Its a $40 Dayco belt Is this where the solid tensioner that Katech makes comes in?
Hey Adam, one day when you aren't busy I'd like to check out your car, sorry I can't offer any advice to your problem!
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Old Feb 19, 2008 | 11:43 PM
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dont go to the casino....lol
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