Originally Posted by
Connedrod
You use the dial indicator to provide the start of the most upward stroke of the pistion on both sides of the crank. This is the only way you can actually acquire the ture tdc. Then with both drgrees known half the difference.
I'm not following your description there, can you try again? I'm always willing to learn something new, but to be honest, I can't figure out what you're trying to say here.
Originally Posted by
Connedrod
A stardard protactor will acquire the degress as well if not better than a digital.
Possibly. Certainly a good quality protractor will measure the angle well enough for the accuracy required ( +/- 1 degree) a cheaper protractor can have a scale that hard to read accurately, and if it rubs anywhere the friction may prevent the pointer from being perfectly vertical.