The British Leyland A series engines used a rubber ring between the teeth on
the crank gear to serve as a tensioner/damper of sorts. My Bugeye used this
arrangement as there is no other tensioner. You don't need it if you have a
separate standard type of tensioner. I don't think Datsun used it on the R
engines but may have on the A series engines. It's debatable as to whether
or not it does any good.
Brian '69 2000
Tampa, FL
http://web.tampabay.rr.com/oilleak/
-----Original Message-----
I am in the process of replacing the timing gears and timing chain on my
67.5 1600 and found in the Clymer manual a statement that there is
supposed to be an O-ring between the teeth on the crank gear. I've
replaced 2 timing sets over the years before this one and none of them had
this O-ring. IS there supposed to be one?
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