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SVTPerformance's Chain of Restaurants
Pics and Videos Buffet
1991 Chevy Lumina Z34 | Retro Review
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<blockquote data-quote="xblitzkriegx" data-source="post: 16339400" data-attributes="member: 105608"><p>If the timing chain and guides were changed and it was still noisy then there was an installation error or low oil pressure. </p><p></p><p>the tensioner was a pretty simple assembly and got pressure directly from the oil pump. sometimes the ratchet assy inside didnt get adjusted right if reused but it wasnt an issue new. the little plastic plunger sometimes got messed up on old engines but it was rarely a problem.</p><p></p><p>sometimes, people didnt remove the slack between the cams when reinstalling the chain and the tensioner wouldnt be able to adjust the slack out. youre supposed to install the chain with the cam index pins in, then remove the intake pin and rotate it back and slip the chain over the teeth then move it forward again to remove all slack from the chain. you then reinsert the pin to verify timing. its a step a lot of people didnt do. they would just throw the chain on and get it close enough. that caused the tensioner to extend way further than it ever needed to. </p><p></p><p>the 3.4 belt swap was hideous. im pretty sure you could lasso a cow with how long that belt was. it also had like 3 idlers and a tensioner, all of which liked to randomly wear out and eat the belt which seemed to only last about as long as it took for your bank account to recover from the last time it was replaced.</p></blockquote><p></p>
[QUOTE="xblitzkriegx, post: 16339400, member: 105608"] If the timing chain and guides were changed and it was still noisy then there was an installation error or low oil pressure. the tensioner was a pretty simple assembly and got pressure directly from the oil pump. sometimes the ratchet assy inside didnt get adjusted right if reused but it wasnt an issue new. the little plastic plunger sometimes got messed up on old engines but it was rarely a problem. sometimes, people didnt remove the slack between the cams when reinstalling the chain and the tensioner wouldnt be able to adjust the slack out. youre supposed to install the chain with the cam index pins in, then remove the intake pin and rotate it back and slip the chain over the teeth then move it forward again to remove all slack from the chain. you then reinsert the pin to verify timing. its a step a lot of people didnt do. they would just throw the chain on and get it close enough. that caused the tensioner to extend way further than it ever needed to. the 3.4 belt swap was hideous. im pretty sure you could lasso a cow with how long that belt was. it also had like 3 idlers and a tensioner, all of which liked to randomly wear out and eat the belt which seemed to only last about as long as it took for your bank account to recover from the last time it was replaced. [/QUOTE]
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1991 Chevy Lumina Z34 | Retro Review
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