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Discussion Starter · #1 ·
Replacing the timing chains and tensioners, following the service manual and after installing them and rotating the crank over 2 revolutions. The marks don't realign. Have turned at least another 8 times over. Is there something that is missing from the manual. The Pistons are not touching that I feel and now the marks are 3 teeth off so far. Thanks in advance for the help
 

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You don't have to follow the marks on the chain. Put the crank pulley back, there should be timing marks on both the timing cover and inside. When you align the crank pulley, the cylinder 1 and 4 should be both on TDC, and timing marks on camshaft should be either at the edge of the cylinder cover or meet. There may be half tooth error, but the camshaft marks on both banks should be identical

Before rotating the crank, make sure the tensioners are on, or the chain will jump

Sometimes you may find the camshafts won't stay at No.1 TDC, then you should rotate the crank a little bit to catch the camshafts, and remember how many teeth you rotate. If you wanna slightly rotate the camshaft to align up, you can put the chain on without tensioner, use socket wrench to turn the camshaft center bolt. It won't loose the camshaft bolt, but can help it to jump a tooth
 

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Replacing the timing chains and tensioners, following the service manual and after installing them and rotating the crank over 2 revolutions. The marks don't realign. Have turned at least another 8 times over. Is there something that is missing from the manual. The Pistons are not touching that I feel and now the marks are 3 teeth off so far. Thanks in advance for the help
The only thing I remember "sbr" saying is you have to mark the old chain to the cams and transfer those marks to the new chain. Sorry its a little too late for that!
 

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Discussion Starter · #5 ·
You don't have to follow the marks on the chain. Put the crank pulley back, there should be timing marks on both the timing cover and inside. When you align the crank pulley, the cylinder 1 and 4 should be both on TDC, and timing marks on camshaft should be either at the edge of the cylinder cover or meet. There may be half tooth error, but the camshaft marks on both banks should be identical

Before rotating the crank, make sure the tensioners are on, or the chain will jump

Sometimes you may find the camshafts won't stay at No.1 TDC, then you should rotate the crank a little bit to catch the camshafts, and remember how many teeth you rotate. If you wanna slightly rotate the camshaft to align up, you can put the chain on without tensioner, use socket wrench to turn the camshaft center bolt. It won't loose the camshaft bolt, but can help it to jump a tooth
Thank you camper for the information, got the timing chains on and now to finish the rest and start the motor and make sure the noises are gone.
 
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