Let's say that the balancer did slip and is off a tad. I rotate to 10* BTDC clockwise and then put on the piston stop. Now I go counter clockwise and it should stop exactly 10* ATDC when it hits the stop. Since the balancer is not likely to slip while doing this manually shouldn't it always come up equidistant on the other side of the starting point?
If you could put the stop in and have it stop at 10 before, rotate and have it stop at 10 after... then your balancer did not slip. Having a Stop be able to stop at 10 is not as easy as writing it. Plus using this method if the balancer is off you will now need to use a new place on the pointer as zero vs. just using the new mark on the crank (the way I just typed it above).
Marking the balancer is a better method.
Quote: I can see it being off a little bit just from the chain tension when one goes from clockwise to counterclockwise?
Chain tension has nothing to do with it. The pointer is not connected to the chain, the balancer is not connected to the chain either.
