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Old 12-12-2010, 06:35 PM
jt20 jt20 is offline
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Join Date: Mar 2008
Posts: 4,642
I guess I forgot to answer the question.

The real danger is valve interference. Not by skipping teeth though.

If the tensioner depressed when turning backwards, the number of chain links between the cam and crank are reduced. Or, more simply, the crank turns and the cam does not. Allowing the pistons to approach the stationary valves.
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