RE: Ohlsson & Rice Antique Airplane Engine
O.K., found out from the previous owner the hole in the exhaust port was likely put there to attach an exhaust extension back in the old days. Also found out from Woody Bartelt that he can re-bush this engine. He says the play in the prop shaft is common and most likely caused by someone using an electric starter. I also asked the previous owner why one of the screws on the timer lever was too long and hitting the ribs on the front crankcase cover. I don't know why I did not see it, but there are three ribs on the cover and two of them are longer than the other one. One of the screws is SUPPOSED to be longer and hit the two longer ribs to limit the timing lever travel so it does not over retard or advance. Heck, I'm the retard. I'm sending the whole thing to Woody to check out.
Mike MacLean