Broken valve spring
Thread Starter
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Broken valve spring
I had crane single valvesprings....one broke, which I replaced. The engine ran fine. I then received REV1116's so I would have the added protection of dual springs.
Is it my imagination or do these springs make your engine sound like a sewing machine? The noise wasn't there after the crane spring was replaced and there was no damage.....compression and leak-down was fine. It comes from both side of the engine and all along the valvecovers. Any clearance issues with the stock rockers? I have the new comp cams rail rocker comin'
Is it my imagination or do these springs make your engine sound like a sewing machine? The noise wasn't there after the crane spring was replaced and there was no damage.....compression and leak-down was fine. It comes from both side of the engine and all along the valvecovers. Any clearance issues with the stock rockers? I have the new comp cams rail rocker comin'
Team Owner
Joined: Sep 2001
Posts: 23,283
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From: Lake Elsinore, CA
Re: Broken valve spring (SpinMonster)
Yup. I have the same springs as does a buddy and they do have that characteristic sewing machine sound. Part of it is how the springs interact with the rockers. At some point I will probably go with a different spring and possibly one of the new adjustable rockers.
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Joined: Oct 2001
Posts: 8,392
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From: Dallas Tx
St. Jude Vendor Donor '03-'04-'05-'06-'07-'08-'09-'10-'11
Re: Broken valve spring (SpinMonster)
Did you use the bottom spring seats with these springs? You can not use the stock valve seals that have a lower spring seat built in. You must change to a earlier model GM valve seal so the REV lower spring seat will sit on the head and allow the inner spring to be located properly.
That would be the only issue that we have seen with the rev springs.
Thanks
LG
That would be the only issue that we have seen with the rev springs.
Thanks
LG
Thread Starter
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Re: Broken valve spring (LG Motorsports)
Did you use the bottom spring seats with these springs? You can not use the stock valve seals that have a lower spring seat built in. You must change to a earlier model GM valve seal so the REV lower spring seat will sit on the head and allow the inner spring to be located properly.
That would be the only issue that we have seen with the rev springs.
Thanks
LG
That would be the only issue that we have seen with the rev springs.
Thanks
LG
My guess is the close proximity of the inner and outer springs. They rub against each other. I have no problem with the sound and I wanted to see if anyone else had the same results. Thanks for the responses.
[Modified by SpinMonster, 3:28 PM 8/5/2003]
