D1 belt headache!
Thread Starter
Racer
Joined: Jan 2006
Posts: 265
Likes: 5
D1 belt headache!
I have a 8rib D1 with a 3.85 pulley. The 89.3" Gates is too lose...on the dyno it slips, after 9 pulls it breaks on the way home. A half inch smaller belt 88.8" might work, but can't find one. I do not want to go to a bigger pulley. If it is an alignment problem would it have survied the 9 dyno pulls. Anyone have a solution?
Burning Brakes
Joined: Dec 2002
Posts: 886
Likes: 0
From: Tn
Originally Posted by Emuffinman1
I have a 8rib D1 with a 3.85 pulley. The 89.3" Gates is too lose...on the dyno it slips, after 9 pulls it breaks on the way home. A half inch smaller belt 88.8" might work, but can't find one. I do not want to go to a bigger pulley. If it is an alignment problem would it have survied the 9 dyno pulls. Anyone have a solution?
What does the tensioner look like ( in the middle, no tension at all etc.) You could try a bigger alt pulley I believe ECS could make you one. Recheck alignment and if you have adequate tension on the tensioner try a reichard racing pulley. Just my .02
Melting Slicks
Joined: Dec 2000
Posts: 2,118
Likes: 2
Originally Posted by Doczo6
What does the tensioner look like ( in the middle, no tension at all etc.) You could try a bigger alt pulley I believe ECS could make you one. Recheck alignment and if you have adequate tension on the tensioner try a reichard racing pulley. Just my .02
Check the tensioner and see of its off the bottom stop, A larger alternator pulley will work, but you will have reduced alternator output. The solution I came up with is to add a link between the alternator bracket and the alternator. 
This makes belt changing alot easier...just put the belt on, then using a pry bar move the alternator out enough to slip the link in place and insert the bolt. Next move the alternator out to its final place and rotate the link in place and insert the bolt.... done. To change a belt... reverse the process...remove the alternator bolt....push the link up...move the alternator in and change the belt. The dimensions for your link will depend on how much you want to tighten the belt.
Last edited by HIGHRPM; Jul 7, 2006 at 06:34 PM.
Thread Starter
Racer
Joined: Jan 2006
Posts: 265
Likes: 5
Great idea on the alternator bracket, HIGHRPM. If you have an extra one I will buy it from you. I was sold a set up, but the correct belt size doesn't exist for it. Nuts!!! Paul
Last edited by Emuffinman1; Jul 7, 2006 at 11:08 PM.
Melting Slicks
Joined: Dec 2000
Posts: 2,118
Likes: 2
Originally Posted by Emuffinman1
Great idea on the alternator bracket, HIGHRPM. If you have an extra one I will buy it from you. I was sold a set up, but the correct belt size doesn't exist for it. Nuts!!! Paul
Last edited by HIGHRPM; Jul 9, 2006 at 05:55 PM.
