Ok so I have been though 4 timing belts in less then a month. I change the crank timing pully. I change the belt tenchener. I even changed the cam gear. I took off all the plastic to make sure non of it was touching. I still cant find out what it is. I think it might be the wrong size timing belt. Im runing a d15b1 head with a b7 cam, and I z6 block. Im not real sure what timing belt I should use, but it keeps eating up d15b1,2,7 timing belts.