Gloyale,
Thank you for your response. I will have the ring gear removed before the flywheel is resurfaced and hope that there is enough surface left under the ring gear to retain it when it is pressed back on. I am thinking the outer 1/3 of the ring gear will no longer be supported after machining. Does this sound okay? If I have to I could weld the ring gear to the flywheel to make sure it cannot work its way off, and try not to get it hot enough during welding to affect the heat treat of the teeth.
I originally saw .815 step and then .825 step but if you say .815 then I will use that figure for the step, and plan on placing a washer or two under the starter ears.
LeoneTurbo,
Thank you for the alternative. I prefer to use the EA81 flywheel because of the smaller bolt holes but I am certainly not ruling out use of the EA82 flywheel if I need to.