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under pulley problems!

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Old Aug 17, 2006 | 11:25 PM
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Default under pulley problems!

I have gone thru my 3rd under pulley it always comes loose. Any sure way to keep it tight on the crank? Sure pin or something?
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Old Aug 18, 2006 | 12:01 AM
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Here is the advice I got from one of the forum members who is an expert at this.

"One suggestion on the ASP pulley: they are really difficult to get all the way on, that's why you hear about them coming off occasionally.
I twisted until I was blue, thought sure I had it. But I had made some very careful measurements, and discovered it was still not on. So I went at it until
I thought the bolt or my arm would break. Finally it hit a solid stop, then I did the new bolt and the torque/degree thing per the book.
if you have any concern at all, sneak up under there and mark the bolt head and the pulley with a red marker, so you can see if the bolt moves - then just check it once in awhile with a small mirror.

I did this a few times after i ran it a bit hard, just sleep better knowing it's all on well."
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Old Aug 18, 2006 | 12:05 AM
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Thanks such a pain in the ***
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Old Aug 18, 2006 | 12:13 AM
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Save yourself a LOT of grief; just pin it. All your issues go away, it's a small amount of work esp. if you are now on your 4th install!

Last edited by Dan_the_C5_Man; Aug 18, 2006 at 12:45 PM.
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Old Aug 18, 2006 | 12:51 AM
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Originally Posted by Dan_the_C5_Man
Save yourself a LOT of grief; just pin it. All your issues go away, it's a small amount of work esp. if you are not on your 4th install!
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Old Aug 18, 2006 | 08:38 AM
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Or use an ARP bolt.
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Old Aug 18, 2006 | 10:08 AM
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I believe the definition of insanity is: repeated action with an expected different outcome.
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Old Aug 18, 2006 | 10:26 AM
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Did you use a new bolt when doing the install? The factory crank bolt is not reusable, it's torque to yield. One use, then throw it away. They're 5 dollars at the dealership. If you didn't do this then that is definitely why you are having your problems...

Chuck @ HPE
281-448-1300
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Old Aug 19, 2006 | 01:44 AM
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New bolt every time
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Old Aug 19, 2006 | 01:45 AM
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Originally Posted by Dan_the_C5_Man
Save yourself a LOT of grief; just pin it. All your issues go away, it's a small amount of work esp. if you are now on your 4th install!
What do you mean by pin it?
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Old Aug 19, 2006 | 08:14 AM
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Default Pinned & ARP Bolt!

Originally Posted by see5
Or use an ARP bolt.
I pinned my U/D pulley (A&A kit) and also used the ARP bolt. While I only have 420 rwhp, I sleep good at night knowing my pulley is secure.


A&A's pinning kit is easy to use. They give you a bolt/guide that you install on the crank/pulley and drill out. Then you tap in a drift pin and it stops the pulley from spinning.

Bob K.

Last edited by Bob K; Aug 19, 2006 at 08:17 AM.
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Old Aug 19, 2006 | 11:50 AM
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thaks Bob we FRC guys got to stick together
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