[quote="roadkill2"]Not bein' a wiseass here, but with or without idler, if a belt stretches, your timing changes . . So the best bet, every year, is to put a new belt on. Especially if you're running a lot of open valve spring pressure and short ratio rockers . . [quote]
No problem. I just want to point out that there are two ways the belt will wear.
1. The stretch from "pulling" the camshaft
2. The stretch from the "sling effect" on the back side.
I just think the idler is insurance...