Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

Timing chain

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Old Nov 6, 2017 | 07:24 PM
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Switching my vvt on my ly6 to ls2 timing chain and the plastic In between spacer. How much slack should this setup have. I was told to uses this instead of the newer style Spring tensioners. Seam to loose
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Old Nov 6, 2017 | 07:33 PM
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When cold, there will be some slack in the chain. As the engine warms, the block "grows" as it expands due to heat, tightening the chain up. So it is normal to have some slack when cold. If the timing set is good quality, and all is installed right, it should be good.
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Old Nov 6, 2017 | 07:50 PM
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What tensioner are people running
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Old Nov 6, 2017 | 08:14 PM
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When they do (not all blocks have a provision for them) it is the plastic block. It works very well.
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Old Nov 6, 2017 | 08:46 PM
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I am using the black plastic one now just seams really loose
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Old Nov 6, 2017 | 09:22 PM
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How much slack would you say there is?
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Old Nov 6, 2017 | 09:54 PM
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Not enough to skip I don't think but it's a new chain
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Old Nov 6, 2017 | 10:01 PM
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Like I said, as the engine heats up, the chain will tighten up. Get everything up and running and see how things go. I can't see the slack. It should be OK if you bought good quality parts.
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Old Nov 6, 2017 | 10:21 PM
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I pretty much asked the same question here: https://ls1tech.com/forums/generatio...tensioner.html

I only had it running for two days before the ECU fried and was getting a lot of random misfires but I believe it was the tune and not so much the chain. I'm supposed to be getting the ECU back next week and this time it should have the Texas Speed VVT tables in it so we'll see how it goes.

But yeah mine has quite a bit of slack when it was cold as well.
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Old Nov 6, 2017 | 10:39 PM
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If its a new chain i wouldnt worry about it. The older gen3 engines didnt use a tensioner. Ive had the ls2 tensioner break and rattle like crazy. I usually just dont use one and have never had an issue.
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Old Nov 7, 2017 | 01:45 PM
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A new chain should not have much slack at all maybe time to change sprockets if millage is high.
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Old Nov 7, 2017 | 01:56 PM
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New cam sprocket and chain, 80000 on motor
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Old Nov 8, 2017 | 11:47 AM
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If you're really worried about it, you can buy the C5R chain from WS6Store which is the strongest/best chain available for our engines (according to almost everyone).
Piece of mind does have a value...
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Old Nov 8, 2017 | 11:55 AM
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Originally Posted by BlwnLs1GTO
If you're really worried about it, you can buy the C5R chain from WS6Store which is the strongest/best chain available for our engines (according to almost everyone).
Piece of mind does have a value...
I am going back to the spring loaded gen 4 style
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Old Nov 8, 2017 | 04:57 PM
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Only had one out of hundreds of the Gen IV spring loaded ones break and it was years ago.
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