TCT repair thought
Joined: Sep 2002
Posts: 1,938
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From: Sydney
Originally Posted by chris_barry' timestamp='1366374211' post='22484657
Changing the tensioner on a worn ( therefore longer) chain only helps mask the problem. When a chain stretches the distance between the links increases by the tiniest amount and it starts to catch as it exits the crank pulley exaggerating slapping on the slack side of the chain.
As far as I know it is the oil pressure & flow (and nothing else) that's producing the force to keep tension on the chain (running engine..)
The worm is like a limited slip ty-rap: in general it only allows the piston to move out so it keeps the piston from moving in when the oil pressure drops, during shifts for example.
But during warm-up and a changing load on the chain it can move in because of the oil film between worm and piston.
Joined: Jan 2006
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From: 17 ft below sea level.
Are there IYO (In Your Opinion) any downsides to not doing anything about this chattering noise?
Is it like clutch buzz: Its a noise but harmless?
I do remember from my dirt bike days (as a hobby yeeeeears back) that when the chain was too tight it also made a clacking / ticking noise.
Those chains were never that clean though, being out in the open.
Is it like clutch buzz: Its a noise but harmless?
I do remember from my dirt bike days (as a hobby yeeeeears back) that when the chain was too tight it also made a clacking / ticking noise.
Those chains were never that clean though, being out in the open.
Joined: Sep 2002
Posts: 1,938
Likes: 4
From: Sydney
Originally Posted by chris_barry' timestamp='1366500154' post='22487785
From my experience, a worn chain sets up a chattering noise.
Is it like clutch buzz: Its a noise but harmless?
I do remember from my dirt bike days (as a hobby yeeeeears back) that when the chain was too tight it also made a clacking / ticking noise.
Those chains were never that clean though, being out in the open.
If it was my car I would only do something about it if it didn't go away once you get the rpm over 2000rpm. I would also remove the rocker cover and look down in the tensioner to get a gauge of how much stick out there is on the piston ( indication of increase in chain length).
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Joined: Nov 2015
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You will make it worse. Oil flows through the middle of the worm, and any modification made to the worm will reduce the pressure. Taking a dremel to the worm gear is the fastest way to destroy it, and dremeled and hand sanded worms have slowed production.
Ill say it again, do not hand sand the worm or dremel it.
Ill say it again, do not hand sand the worm or dremel it.
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