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Old 06-30-2013, 04:53 PM   #2
larrys40
Senior Member
 
Join Date: May 2010
Location: St Charles , Missouri
Posts: 1,675
Default Re: fiber timing gear

Absolutely not... the gear should be fairly tight... with maybe 3-5 thousands movement between the crank gear and cam gear on a good gear. If your movement is the gear for and aft (front to back) either the gear is loose on the camshaft or the front timing gear spring and plunger should be replaced. Please note that I have also seen engines that were way off on the centering of the line bore of the crank when the Babbitt was machined.. etc., which can also have this problem. There are oversize gears available if needed.

If there are teeth off the gear the oil pan will have to be pulled to clean out the shavings and gear debris. An extra step but a necessary one.

Good luck!
Larry Shepard
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