Knowing the diameter of the flywheel and using my CAD program I made a drawing that represents 5 degree hash marks from TDC with +/- 30 degrees before and after TDC. Print it out (making sure printed to scale, holt crap would that be bad otherwise!), then tape to flywheel with TDC smack dab in middle Using my hand engraver and the taped on printout, I engraved on the flywheel the 0 degree mark (TDC) and the corresponding degree marks before and after TDC. Then when you look through the view port on the side case you can now see the timing of the engine. Later on when we get the motor running this will be VERY important as we need to make sure when we set the timing to say 5 degree BTDC, the timing light will show that.