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Old 07-11-2003, 01:29 AM
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have to get timing chain replaced

what does that do?
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Old 07-11-2003, 04:39 AM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
The timing chain serves to translate crankshaft rotation into camshaft rotation. Camshaft rotation opens and closes the intake and exhaust valves in each cylinder. The timing chain also ensures that the valves open and close in synchronicity with the movement of the pistons, the injection of fuel and the ignition sparks.

If you're replacing it as a precaution or because your tech has noticed excessive chain stretch then figure on mid hundreds for just a new chain or $2000-2500 for a new chain and guide rails. Many techs won't replace just the chain particularly on V8 engines.

If you're replacing it because it broke, it's likely that you'll have to do some work on the valves as well.

95 S420
91 300SE
87 300SDL
83 300SD
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Old 07-11-2003, 08:01 AM
vwbuge's Avatar
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Join Date: Sep 2001
Location: Johnstown, Pennsylvania
Posts: 2,101
Do not attempt this yourself.
'85 300SD (formerly california emissions)
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