ZR-1 Net Registry Forums - View Single Post - Aftermarket Belt Tensioner Pulley Failure

Locobob · 06-03-2019

The pulley probably had less than 15k miles on it. I mentioned it to Haibeck and he said he's seen two other failures of the aluminum pulley just like this one. So if you have this pulley you better keep a good eye on it. I have the pulley removed from the tensioner now, still no idea why it failed. It seems to spin about the same as the old Dayco pulley I have laying around - both on the shaft and on my finger, no obvious signs of bearing failure. By the way this "lightweight" aluminum pulley is actually 1oz heavier than the Dayco so there's really no reason to run it other than looks.

06-03-2019	#4
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,047	Re: Pulley Failure The pulley probably had less than 15k miles on it. I mentioned it to Haibeck and he said he's seen two other failures of the aluminum pulley just like this one. So if you have this pulley you better keep a good eye on it. I have the pulley removed from the tensioner now, still no idea why it failed. It seems to spin about the same as the old Dayco pulley I have laying around - both on the shaft and on my finger, no obvious signs of bearing failure. By the way this "lightweight" aluminum pulley is actually 1oz heavier than the Dayco so there's really no reason to run it other than looks. __________________ Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368 Last edited by Locobob; 06-03-2019 at 01:36 PM.