scsmith
Well Known Member
One more idea to throw into the pot. There are timing marks on both the fwd and aft sides of the ring gear/flywheel. The marks on the fwd side index to a mark on the starter motor, IIRC. The marks on the aft side index to the case seam.
Is it possible that you are misinterpreting what TDC is by using the wrong index point for a particular set of timing marks? E.G. using the forward timing marks but aligning to the case seam.
This would shift your timing a bunch. I haven't thought about how much, maybe too much and the engine wouldn't even run? I haven't thought through whether it would be too advanced or too retarded.
Anyway, given everything about your set up seems pretty good, there must be something significant that is not right that we haven't thought of yet.
Is it possible that you are misinterpreting what TDC is by using the wrong index point for a particular set of timing marks? E.G. using the forward timing marks but aligning to the case seam.
This would shift your timing a bunch. I haven't thought about how much, maybe too much and the engine wouldn't even run? I haven't thought through whether it would be too advanced or too retarded.
Anyway, given everything about your set up seems pretty good, there must be something significant that is not right that we haven't thought of yet.