Quote:
Originally Posted by Stephen12ZL1
the upper idler is a common failure and has been the problem for a few here. It caused the same issue on an '18 ZL1 A10 owned by Mojo Scott at VIR as well. He replaced the belt and it immediately shredded again due to the idler locking up. Double check it turns freely...it is the ribbed on directly below the supercharger snout.
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Idler spins freely and is in good shape. I really don't know what caused this, but I'm thinking it's possible that one of the crankcase ventilation tube clips broke and made contact with the belt. Not sure if that's possible, but my latest theory.
Anyhow, she's running after the new thermostat, new belt and crankcase vent repair.