Yanmar Repower
Bill,We have a "77 Cat 30 which had a single cylinder YSE-12 Yanmar diesel in it when we got it. The engine died so decided to upgrade a bit. I located a freshly rebuilt Yanmar 2GM (13 HP)at Gartside Marine here in Victoria for $4,500. and made the transplant myself last July while still in the water.First thing I discovered is that the stringers (4x4's)that are glassed in to the hull did not line up with the new engine motor mounts, so had to grind them out and glass in new ones.Set the new engine in lined it up as best I could. Then had my next door neighbour who is a shipwright come down and get it straight and at the proper angle.The engine head and top of the exhaust elbow do protrude above the seat and I had to cut out a portion of the plywood seat in two places. I used some 3/4 plywood to raise the height with a 1/2 plywood top. I only needed near an inch extra clearance with my new engine. I have not yet had the cushions cut (hollowed out) to fit nicely over the new sections.I also found that the 12X12 two blade prop was really not compatable with the new engine. Less speed and power for some reason. Actually just put a new 3 blade Campbell Sailor prop on two days ago and hope to try it out this afternoon or Sunday to ascertain if there is any (hopefully) difference.If you are in Victoria and would like to take a look at the conversion you are welcome.You can contact me at work 250-361-0323, or cell at 250-883-4957. My e-mail at work is cliffc@city.victoria.bc.ca