Re: 18HP saga continues. Can’t get past 14mph and 3,900 RPM.

[stephenspann27]

quote fleetwin:

OK, so your boat performed nicely with a newer OMC 15hp on it, and your Dad’s rig performed sluggishly with your engine. This would seem to rule out hull problems. The 9″ pitch prop is the smallest available, so the RPMs should be up there….Just review with us what tach you are using to determine you are only getting 3900-4000RPM. All in all, I think the carb swap is the best next thing to try….

I’m using a "tiny tach" you can see it in the video links. There is a 9.25×7 prop out there… but I don’t think my boat is near heavy enough to warrant that pitch, the 9×9 should be more than enough. I’ve ordered the dual knob carb..