Hi again.
1995 Sun Tracker Party Barge 24', 1985 lbs + 305lbs engine + 700 lbs people + 500 lbs gas and other stuff = 3500 lbs or so total
Aluminum 13.75 x 15 prop
Tracker Mercury 90hp ELPTO
Mostly cruising around 2600 rpm, no skiing. My goal is engine efficiency and longevity.
WOT is right at 5000 rpm, speed around 18 mph trimmed up a fair amount.
Max rpm on the engine says 5500. Should I change props to raise rpm closer to that?
Engine runs good as far as I can tell except for low idle vibration and shake, which may be from what seems to be a slightly off center hub (and apparent nature of the engine). Had a tune up by previous owner about 6 months ago.
1995 Sun Tracker Party Barge 24', 1985 lbs + 305lbs engine + 700 lbs people + 500 lbs gas and other stuff = 3500 lbs or so total
Aluminum 13.75 x 15 prop
Tracker Mercury 90hp ELPTO
Mostly cruising around 2600 rpm, no skiing. My goal is engine efficiency and longevity.
WOT is right at 5000 rpm, speed around 18 mph trimmed up a fair amount.
Max rpm on the engine says 5500. Should I change props to raise rpm closer to that?
Engine runs good as far as I can tell except for low idle vibration and shake, which may be from what seems to be a slightly off center hub (and apparent nature of the engine). Had a tune up by previous owner about 6 months ago.