One of my favorite posts from this site:

Wellcraft V-20 Forum / Performance / Boat test May 12th, 2003, 12:39pm
Started by bigshrimpin ***124; Post by cbuzz
Just as an FYI my Yamaha manual says 4500 -5500 as the WOT setting. Seems very strange to have such a wide range on RPM for WOT.

Ran my boat a local lake this last weekend with the NAVMAN system and a Lowrance 350 GPS/FF/Plotter, full fuel ( 60 gal ) 1 person, no T-top, med load of gear.
Using the Boating Mag test profile ( 90% of fuel cap 54 gal.) Boat had maximum range of 186 statute miles.

Test results are as follows.

RPM MPH GPH Range MPG
1000 5.3 2.4 119 2.2
2000 8.2 4.5 98 1.8
2500 13.0 6.1 115 2.1
3000 20.5 7.1 156 2.9
3500 28.3 8.2 186 3.4
4000 33.5 10.3 176 3.2
4500 38.6 12.0 174 3.2
5000 43.4 15.6 150 2.8
5400 48.5 20.1 130 2.4


CBUZZ WAS RUNNIN A 1992 CARBED 200HP YAMAHA.