Pulley alignment problem
Thread Starter
Launching!
Joined: Jul 2004
Posts: 223
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From: Potomac, MD
Pulley alignment problem My pulleys seem to be out of alignment a bit. Are there any common culprits eg missed spacer or washer. I am using all GM corvette parts. No ac.
looks like alternator pulley in too far maybe a 1/4 in and tensioner rmaybe out about one belt rib.
Before I go crazy tearing everything apart I'm looking for the low hanging fruit. Tx
looks like alternator pulley in too far maybe a 1/4 in and tensioner rmaybe out about one belt rib.
Before I go crazy tearing everything apart I'm looking for the low hanging fruit. Tx
TECH Regular
Joined: Jan 2004
Posts: 426
Likes: 4
From: Austin, TX
Are you sure that you do not have an engine with a F-body balancer on it?
This would give an alignment mis-match of almost 3/4". Most alignment problems are related to mixing and matching Corvette and F-body parts.
Regards, John McGraw
This would give an alignment mis-match of almost 3/4". Most alignment problems are related to mixing and matching Corvette and F-body parts.
Regards, John McGraw
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TECH Regular
Joined: Jan 2004
Posts: 426
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From: Austin, TX
The Corvette part # is 12560115.
You can tell if you measure, whether it is a F-body or Corvette. On the front cover, on the driver's side, there are a couple of little round flat pads cast in the cover. If you measure from one of these pads to the back of the balancer, the F-body will measure about 1.5". If the measurement is less than 1", it is a Corvette.
Regards, John McGraw
You can tell if you measure, whether it is a F-body or Corvette. On the front cover, on the driver's side, there are a couple of little round flat pads cast in the cover. If you measure from one of these pads to the back of the balancer, the F-body will measure about 1.5". If the measurement is less than 1", it is a Corvette.
Regards, John McGraw
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Verdad Gallardo TECH Regular
Joined: Jan 2004
Posts: 426
Likes: 4
From: Austin, TX
I don't know why I made it so difficult, you can just measure from the center of the bolt head holding the balancer to the front edge of the balancer.
A F-body balancer will measure almost exactly 1.5".
Regards, John McGraw
A F-body balancer will measure almost exactly 1.5".
Regards, John McGraw
TECH Regular
Joined: Jan 2004
Posts: 426
Likes: 4
From: Austin, TX
No, it is pretty much impossible to seat the balancer to deep. The 1/8" sounds about right. If the blancer is not the the culprit, then I am at a loss.
about the only thing that I can think of is that the belt is not actually running in the correct path on the waterpump yet. rotate the engine through serveral rotations, and see if the belt does not walk itself back a little on the pump pulley. There are really only two diffwrent setups as far as belt alignment goes, and they are more then an inch different.
Regards, John McGraw
about the only thing that I can think of is that the belt is not actually running in the correct path on the waterpump yet. rotate the engine through serveral rotations, and see if the belt does not walk itself back a little on the pump pulley. There are really only two diffwrent setups as far as belt alignment goes, and they are more then an inch different.
Regards, John McGraw
