I am in the process of re-powering my 1982 9,2c. The original engine is a Yanmar 2Gm with an aftermarket (Sendur) freshwater heat exchanger cooling system. I realized that the engine started devekloping blow-by last year when it blew he dip stick out of the block, coating the starboard side of the engine compartment with oil and filling the cabin with smoke. The engine would consistently stall at idle and this year the situation worsened, with the idle only holding at 1100 rmp or higher. This resulted in several near misses in docking situations when the engine would satll between shifting gears while backing into my slip.