so why all the sudden when I reinstall my belt is it rubbing against the tensioner ? does something need to be replaced ? I cant imagine this is good for the belt. pretty sure it wasnt like this before. thanks

 

Did it rub before, and what were you in there doing?

 

I don’t recall it rubbing but I’m not sure. I just did the coolant lines replacement. Port supercharger , intercooler and pump upgrade etc etc

 

If it was rubbing, you'd see marks on the tensioner and rubber dust all over the place. Is it the same belt that was on there before you did the work?

And to answer your question, yes, it is routed correctly. But from what very little I can see from here, it looks like the belt may be a bit too short, causing the tensioner to rotate counter clockwise (as you look at it from the front), bringing the belt closer to the tensioner body. Also, please repost the pictures you had in the other thread here for easier reference. Thanks.

 

Hey thank you very much will do !

 

do belts skrink and contract over time I could see that. Its a velocityAP belt I got when I did the programming and tunning but its probably go 40k miles on that belt. What is the smooth pully that has the marks from the belt on it bc I think id like to swap it out while im in the fixing mood. Everything else is grooved.so why not.

 

I have about 65k on my XKR with what's in the sig without issues. Generally belts don't stretch but rather crack. They definitely don't shrink. Don't worry about the smooth idler pulley. Same deal with mine, and again- about 65k without any issues. The ribs haven't worn grooves in it, but there's no paint where the ribs run on it. Also, idler pulleys that run on the outside of the belt don't need (or should have) grooves and/or shoulders to guide the belt; that's what the pulleys before and after do.

My advice would be to call VAP. With only one picture, minimal info, and unanswered questions, you're at the limit of what you can expect to get out of this thread.