northshore
Well-Known Member
- Jan 17, 2011
- 2,101
- Boat Info
- 1989 340 Sundancer
Raymarine E90W Radar/Chartplotter
- Engines
- Twin 454 Mercruiser 340's
12 knots or 14 MPH is mighty slow.
On a freshly cleaned bottom with a good tune up I averaged 25 MPH or about 22 knots @ 3200 RPM.
Check for crud on the bottom. I'm certain that that cost me roughly 5 MPH.
Like Ron said, next look at the running gear. with the boat moving that slow I'm even wondering if you have the wrong props on her
Also verify that the 3200 that the tach says is really 3200
-Mike
On a freshly cleaned bottom with a good tune up I averaged 25 MPH or about 22 knots @ 3200 RPM.
Check for crud on the bottom. I'm certain that that cost me roughly 5 MPH.
Like Ron said, next look at the running gear. with the boat moving that slow I'm even wondering if you have the wrong props on her
Also verify that the 3200 that the tach says is really 3200
-Mike