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Discussion Starter #1
What is the out of speck for a 20R timing chain by checking it turning the crank and waiting for the rotor to move (degrees)?

Or can this not be done on this type of timing chain setup?
 

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It's hard to measure the chain but I remember reading somewhere that you could measure the distance between a few links and there were specs for that. I think it was the FSM. When in doubt, just replace it. It's cheap. With the slack being taken up by oil pressure, it would be hard to test by degreeing it.
 

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i wouldn't bother with checking it...either replace it or let it go, i've never heard of a 20R t-chain failure, since they all had steel guides and a 2 row chain.
 

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Discussion Starter #4
So you think a 20R with just around 180K would need a timing chain replaced? I have the engine out, but I would rather not spend the cash if not really needed. I have enough other things to fix.:confused:
 
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