Guys excuse my ingnorance but aren't there 2 opportunities per cycle for the piston to be at the top of the cylinder(compression and exhaust) Hence you can set the dizzy 180 out of sequence.
I thought TDC on compression was when the piston was at the top and the valves were closed (hence compression stroke)
(gee I used hence twice in the same message)
Am I mistaken is the exhuast stroke also considered TDC?
