Quote:
Originally Posted by Megahurtz
Belt may be too tight if its eating the coating off the pulley. I've seen that happen before. Usually the belt makes A TON of belt dust as well if this is happening. I've seen a pulley and a belt destroy each other in less than 1000 miles if they are too tight.
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I am pretty sure this is why guys have also snapped the pulley shaft off the end of the Whipple supercharger. If you don't have the slide tensioner washer on the back side oriented in the correct direction, it makes the supplied belt almost impossible to get on and maxes out tensioner. Flip the washer the other way and now you have plenty of adjustment and the belt goes right on and tensioner travel is 1/2-3/4.
Moral of the story is, when you see odd issues like this don't automatically assume it's that part. Something else is likely causing the problem.