ORIGINAL: w8ye
I think the deal about the compression feeling different in the different directions has more to do with which side of the piston the ring gap is on and how the skirt of the piston rocks in the cylinder that helps seal off the compression when traveling in a certain direction.
I don't think the engine cares which direction it is running as long as the ignition timing is correct
That makes perfect sense to me, and I agree.. The engine doesnt care which way its turning. None of my glow engines feel different turning them over CW vs. CCW. The pop past TDC sounds different but thats all.