Timing belt riding on rear of cam sprockets and rubbing on engine

[Vkgallo]

Hello, I changed my timing belt and cams at the same time on my FI 1981 2000. I did not go crazy with the cams. I just put in a used set of the narrow lobe 22/66 vs the origional 5/53. All seems to be fine with that part of the engine updating. I did change the origional plastic sprocket on the aux shaft with a metal one that I obtained from a junk yard to be safe as I dont trust 35 year old plastic. I also changed the tensioner and the tensioner bracket since the origional tensoner bearing disentegrated and could not get the remaining piece off the origional mount. That bracket was off a junk yaard engine I have laying around. The timing is spot on.

Only problem is that the old belt rode in the middle of the cam sprocket. The new one rides all the way to the rear edge. Is this a normal variation? It does not appear to be rubbing anywhere I can see but I cant see the drive gear as it is covered by the crank pulley. Post edit: I looked and the belt is rubbing on the rear timing belt cover attached to the engine.

I have pictures but cant figure how to add an attachment to a post.

[joelittel]

There are a few good posts on how to insert pictures, but you'll have to use the search feature to find them.

Guys correct me if I'm wrong, but I believe the FI cars have a guide on the rear of the Aux pulley. Does your metal pulley have that guide?

I've read that belts do drift a little, but it seems odd that yours has changed position.

[carl]

If the cam boxes are not absolutely parallel with the head, they will put the cam pulleys on an angle and cause the belt to walk to one edge or the other. Make sure the cam box bolts are properly and equally torqued.

[Vkgallo]

Yes, my origional aux gear has a guide on the rear and the one from a slvage yard did not. Put an aux shaft with a rear guide and it is OK now.