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DISCUSSION => Engine + Driveline => Topic started by: bflan2001 on September 24, 2011, 10:13:30 PM

Title: Timing chain replacement
Post by: bflan2001 on September 24, 2011, 10:13:30 PM

How common is it for the crank sprocket and cam sprockets to wear out? I have everything needed to replace the chain, all guides, tensioner and oil pump rotor. but those last three sprockets are expensive. I won't be able to check them out for another two weeks, and if they are a common replacement during rebuilds I might just order them.

Title: Timing chain replacement
Post by: DesktopDave on September 25, 2011, 08:54:16 AM

Crank wear is rare from what I've seen.  Cam gear wear is common.  You may want to replace the idler gear or bearing as well.  Those have a tendency to fail at high mileage as well.

Title: Timing chain replacement
Post by: bflan2001 on September 25, 2011, 11:50:28 AM

thanks dave..i can't find a part number for the idler gear or bearing, could you link me to those parts?

i'm using the link below to put together a kit, i have everything there along with a few other items, but he doesn't mention the idler gear.

http://www.esatclear.ie/~bpurcell/318istimingchain.html