I'm going to be ordering some matched alternator belts for my dual pulley and was wondering what brands people have had success with.

I used Gatorbacks with not much luck. I ordered a matched pair, but they wore unevenly. When I first put them on there was even tension on them. Within a week or two you wouldn't have guessed they were a matched pair. The outer pulley had alot more slack in it.

I'm using the pulley from rotaryinnovations and I don't think the pulley is the problem. I've got a friend who is using the same pulley with no problems

 

i just used napa belts... bought two at the same time, worked fine. One was a little tighter initially, i put it on the inside and a week later they were tensioned evenly.

 

I'll try simply swaping them and see what happens.

 

It's going to be nearly impossible to find two belts that are the exact same size. I use belts from the dealer, which are just Gates belts (in my area anyway). They seem to do the job. But you will always end up with one a little tighter then the other.

 

thanks for the reply Aaron, I guess the perfectionist in me was expecting more than can be expected.