Well, as usual my summer got busy with work and family. I hope to return to my project come September. Depending on the price of heating oil, I migh pu the engine on the back burner and clean up the body, or some other labor intensive task that's cheap.
I've posted twice trying to find a machine shop in Southern Maine, and New England. I cannot find anyone who knows how to test the hardness of an aluminum head. I have found a local shop that has rebuilt one of these engines, so at least that's a start. I'll resume my search and post again in August for shops within driving distance that may be able to check head hardness. But for now, I'm just laying low. If I still cannot find one, I may port and polish the head anyway for practice.
Hope you all are enjoying your summer!