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View Full Version : Power options I/O conersion, decision time!


twisterme
03-05-2007, 09:50 PM
Have been working on a 17.5' fiberglass hull that was originally powered by a 4cyl OMC (120HP???) driving an OMC outdrive. I have removed the deep-vee and flattened the aft 1/3 leaving a lifting strake on each side, the forward 2/3rds has a shallow vee but the deep fore foot is gone. The hull without motor or pump weighs about 2050 lbs. I will be using a Hamilton 751 pump with standard impeller and am planning to marry that to the original OMC 120 HP. Question, what kind of performance do you think it will give me. Primary use will be on Pacific NW estuaries, the Columbia River and inland lakes, 2-3 people on board, no white water. I have not mounted the motor yet so now is decision time
2031

chucks electric
03-06-2007, 08:04 AM
hello, if your set on using a 4 cyl engine. i would use a later model 3.0L same block but more power they make about 140 hp for the same wieght.

riverhawk
03-07-2007, 05:20 AM
some years ago I had 16' alum. sled that some one had put a 2 stage in it when I got it the motor was bad I put a new crate 3.L motor in it it was fast the bolt pattern on the crank not the same good luck on your project riverhawk