Timing chain after cam swap
Timing chain after cam swap I've got kind of a stupid question. How much slack is there supposed to be in the timing chain? I put a cam in today and after installing the cam, cam gear, and LS2 chain, the chain has a decent amount of slack in it. I can push the chain in between 1/2" and 1". It's not loose enough to skip teeth on the gears, but if I turn the engine over by hand pretty fast I can hear it slapping around. I made extra sure the dots were aligned. So my question is how loose should the chain be?
i have i similar problem but mine only moves 1/2" at its widest movement and I'm using a Jwis chain by Katech, but my block has been line honed. So I'll ask the question too, how loose should the chain be?
I bought both sprockets, but I only changed the cam gear. I didn't feel like pulling the crank sprocket off and pressing the new one on, especially when my engine has less than 20k miles. I doubt that is what is causing my problem, but I could be wrong.
Take a look at this timing set if you want a better fit and chain!
http://www.lingenfelter.com/Merchant...Category_Code=
http://www.lingenfelter.com/Merchant...Category_Code=
Launching!
Joined: Feb 2004
Posts: 260
Likes: 0
They are pretty slack.
You can always buy the GMPP chain dampner
PN 88958607 (this may not be the current PN)
It's described in a GMPP catalogue as:-
88958607 Timing Chain Dampner LS1, LS6
This timing chain dampner is intended for high engine speed applications and is used to improve timing chain life. Some blocks require drilling and tapping -an instruction sheet is included.
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TECH Fanatic
Joined: Jun 2002
Posts: 1,979
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From: Upstate NY
FWIW, the sprockets do wear to fit the chain that was installed originally on them. You should replace all three items as a set.
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Brett Foote I bought the set from Yank a while back when they had a special going. I'll probably put the new crank sprocket on in a few days and see if that changes things.
Here's some pictures of what I'm talking about. The right side of the chain is tight, but the left side has about 1/2" of slack in it.
Here's some pictures of what I'm talking about. The right side of the chain is tight, but the left side has about 1/2" of slack in it.
Last edited by jhubbs; Mar 16, 2009 at 04:59 PM. Reason: added pics
I bought the set from Yank a while back when they had a special going. I'll probably put the new crank sprocket on in a few days and see if that changes things.
Here's some pictures of what I'm talking about. The right side of the chain is tight, but the left side has about 1/2" of slack in it.
Here's some pictures of what I'm talking about. The right side of the chain is tight, but the left side has about 1/2" of slack in it.
hmm maybe i never really paid attention when i did my swap, but that doesnt seem to bad to me.. i mean its not going to be so tight that it wont even move, like said above it needs some slack otherwise when you romp on it, it might snap
