CaMaRo67RS355

iTrader: (75)

i have a ASP underdrive pulley with correct belt sizes it through the belt haaf way off about 5-8 times the past 6 months when i had the stock pulley on it never did that. well the other day i was going down the road and got on it and it started coming off so i popped the hood and checked and found it was ripped from riding on the lip of one of the pulleys.

im using the gatorback belt.

i also have a aftermarket thunder racing tensioner would this be the cause?

let me know what you think to prevent it...

ABQ99TA

iTrader: (17)

I have never had a problem with mine. You might want to check the alignment of your pulleys you may have not got the pulley on all the way.

Wilkenstein

iTrader: (5)

I had that problem and went with a katech tensioner. No problems yet!

CaMaRo67RS355

iTrader: (75)

what belts are you using?

DONAIMIAN

iTrader: (18)

My vote is for an out of alignment pulley. I have one of the early ASP pulleys on the stock tensioner and never had a problem with throwing belts.

Ryan02SS

iTrader: (3)

I agree. The belt should not throw unless a pulley is out of alignment. I would bet the ASP crank pulley is not fully seated. ASP here 4 yrs no thrown belts. Stock tensioner.

Viper

iTrader: (6)

Mine was fine until I went road racing. Granted, sustained high RPM is not what you will see on the street or a drag strip. Anyway I caught it (the belt) before it walked off, it was on 2 ribs. March pulley.