Join Date: Oct 2007
Location: Port Moody BC, Canada
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Engine and prop info needed!
I just bought my S2 9.2C in July and I am very happy with it, generally. I am trying to wring another knot or so of speed out of her when under power, however and I although I got most of the original manuals, there was no manual for the mechanical gear. She's a 1983, and powered by a Yanmar 2GM. I have no idea whether the engine's ever been opened up, its RPM seems governed to run at 2100, max. The engine plate says its rated at 15 HP at 3400 RPM, but there's no way this engine would ever hold together running at that speed, I'm sure. The prop looks like it could be original, and I didn't get any numbers off it.
I have been looking all over the 'Net to engine specs without luck. I would like to source a rebuilt 2GM, preferrably a 2GMF (freshwater cooled) to repower with.
I'd also like to hear from any folk who have upgraded their props and had good experience. I had some pretty pathetic performance on one trip where I averaged 3.5 kts. due to current (no wind, had to motor) and from what I can find out I should be getting about 4.5 at least.
Can anyone throw me some scraps of information?