Thanks again guys. I guess that I will need to take the boat out on a flat day and open her up. If I understand you, if the boat has the correct propellor, I should be able to reach near 2800 rpms and hull
speed. I will need to find a way to check the tachometer accuracy short of buying
a $300 piece of gear
. Wouldn't the old fashion timing lights do the same thing? I see there is a piece of reflective tape on the main engine pulley.... Also have the problem of measuring hull speed since the knotmeter
impellor is on the fritz and GPS
might give me enough data to interpolate the true speed.
Another related question: I have not set the valve clearance since I bought the boat several years ago. The engine is not excessively noisy, starts well, runs well, etc. Any rull of thumb on checking valve clearances. Probably should order a valve cover gasket
and get to it before we take off again.