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BUSY BOLTERS Are you one?  The Shop Area
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Jul 21st, 2025 | | | | Joined: Oct 2006 Posts: 289 Shop Shark | | Shop Shark Joined: Oct 2006 Posts: 289 | Working today on chevy 2.8L. The crankshaft broke in half and the new one is in. How do I know when the crank's nose gear for the timing chain is on deep enough? I took it apart a while ago and don't remember. Without the woodruff key, it will bottom out on the crank. Any ideas? Timing chain seems to be flat against a guide flange, but the gear looks a smidge cocked. Key is in and I'm hesitant to try and drive it on further. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | Did you heat the gear before installing it? Get it just hot enough to need a welder's glove to handle it, and it will slip on all the way to the bottom without hammering on it at all. Too late now, I know, but you might consider pulling it back off and cleaning up any burrs the hammer job created, then heat it with a Propane torch.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Oct 2006 Posts: 289 Shop Shark | | Shop Shark Joined: Oct 2006 Posts: 289 | It's poped off. Going to get new keys and will try some heat.
Thanks,
| | | | | Joined: Oct 2006 Posts: 289 Shop Shark | | Shop Shark Joined: Oct 2006 Posts: 289 | Read some other forums and most said 20 to 30 minutes in the oven at 300F, so that's what I did and drove to down with the balancer bolt, 2" long PVC coupler and a washer big enough to fit the PVC. Worked perfect, no beat, no tap. Got a new chain and gear set too. Old had too much slack.
Thanks!!!
Last edited by 57_StepSide; 09/13/2011 10:59 PM.
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