I keep breaking Timing Chains . Any ideas why?
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Thread Starter
Racer
Joined: Mar 2008
Posts: 470
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From: Easley Sc
I guess he does not want to answer. Maybe because it is a big secret, I do not want anybody to know. What the hell, I bought the car used I went back through the receipts I got with the car and it does not appear to be one bought. The one on it has no identifying numbers so I guess it may be stock. But do not tell anyone,remember I do not want anyone to know.
Le Mans Master
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From: Morton illinois
St. Jude Donor '14-'15
Tech Contributor
Joined: Jan 2007
Posts: 19,421
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From: Dyer, IN
I guess he does not want to answer. Maybe because it is a big secret, I do not want anybody to know. What the hell, I bought the car used I went back through the receipts I got with the car and it does not appear to be one bought. The one on it has no identifying numbers so I guess it may be stock. But do not tell anyone,remember I do not want anyone to know.
Good luck
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Looks like the ASP underdrive balancer.
You are far from the first person running that pulley to break a chain. It's happened to enough people that it really is getting to be beyond coincidence.
Good luck with your new engine, but I would not re-use that balancer, or you may find your chain troubles continue to follow.
You are far from the first person running that pulley to break a chain. It's happened to enough people that it really is getting to be beyond coincidence.
Good luck with your new engine, but I would not re-use that balancer, or you may find your chain troubles continue to follow.
Thread Starter
Racer
Joined: Mar 2008
Posts: 470
Likes: 6
From: Easley Sc
Looks like the ASP underdrive balancer.
You are far from the first person running that pulley to break a chain. It's happened to enough people that it really is getting to be beyond coincidence.
Good luck with your new engine, but I would not re-use that balancer, or you may find your chain troubles continue to follow.
You are far from the first person running that pulley to break a chain. It's happened to enough people that it really is getting to be beyond coincidence.
Good luck with your new engine, but I would not re-use that balancer, or you may find your chain troubles continue to follow.
Thread Starter
Racer
Joined: Mar 2008
Posts: 470
Likes: 6
From: Easley Sc
Whatever bro, you are the one breaking timing chains, not me. A few of us asked....why? , because there has been a known correlation with breaking timing chains, and certain balancers. You've got two very knowledgeable guys like Eric D and Vettenuts (both engineers, and a wealth of expertise) asking you for a reason.
Good luck
Good luck
No disrespect intended . I was not trying to avoid the question but just no way for me to know who made the balancer and I was working on comparing pics and going through old receipts to find the answer when I caught your comment. So I guess I took it wrong. I have a new ls6 coming this Friday so I believe the problem maybe solved. I wish a thread like this was around the first time as I would have swithced balancers the first break.
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From: Clinton Township MI
C7 of Year Finalist (track prepared) 2019
Broken timing chain - ASP underdrive pulley
http://forums.corvetteforum.com/c6-t...post1573926623
I'm starting to see a trend with these ASP underdrive pullies.
http://forums.corvetteforum.com/c6-t...post1573926623
I'm starting to see a trend with these ASP underdrive pullies.
Drifting
Joined: Dec 1999
Posts: 1,541
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From: Raleigh NC
I had an ASP pulley on both times when mine broke. I'll be glad to give it to anyone that wants to give it a shot.
When I spoke to my current engine builder about it he told me that they used to put them on the ASA motors that they built and subsequently started breaking chains. He said he has a pile of them now.
I have an ATI now.
When I spoke to my current engine builder about it he told me that they used to put them on the ASA motors that they built and subsequently started breaking chains. He said he has a pile of them now.
I have an ATI now.
Burning Brakes
Joined: May 2008
Posts: 1,147
Likes: 1
From: Mohegan Lake New York
No disrespect intended . I was not trying to avoid the question but just no way for me to know who made the balancer and I was working on comparing pics and going through old receipts to find the answer when I caught your comment. So I guess I took it wrong. I have a new ls6 coming this Friday so I believe the problem maybe solved. I wish a thread like this was around the first time as I would have swithced balancers the first break.
Thread Starter
Racer
Joined: Mar 2008
Posts: 470
Likes: 6
From: Easley Sc
The solution to my chain problem arrived and we had our first test run yesterday. Hard to tell the diffrence between a heavly modded ls1 and a ls6. The ls6 is alot smoother without a race cam. I will get it on the dyno next week for a tune and we will see the numbers to compare.
They sell these motors and tell you all you have to change is the oil pan and pilot bearing but you do need a few more things off your old one. It took me about 2-3 hours just swapping peices.
Last edited by billy25us; May 7, 2010 at 07:26 AM.
