1978 23'cc, 1999 225 Suzuki EFI, t-top(w/electonics box), ~100gals. gas, 310lbs people (no, not just me).
At 4200 rpm, I'm only getting about 24-25kts and having trouble staying on plane (10-12gph). At 4800 rpm (which the engine seems to be very happy with), I get about 28-29 kts (15-18 gph) depending on conditions and a real nice plane.
The other night, pretty flat conditions, was at ~5200 rpms and got to about 34kts (before I had to slow down at the no wake zone). Speed was still coming up slowly, but I didn't feel like there was a lot of engine left at all. I don't think it was going to get more than 37-38 kts or so - unless top end speed comes on a lot slower than I thought.
After hearing about all the 45-50+ knot boats (incl. some of similar size and power), what's my problem? I have no idea what the dimensions are on the prop - boat is a recent purchase - but its SS and in great shape. Is my engine weak? It seems to be running really nicely, just not lot of power. The trim tabs haven't been working until recently so I'm just figuring them out.
Are these specs fairly normal or am I slow? BTW - All speeds GPS.
Thanks. Jim
At 4200 rpm, I'm only getting about 24-25kts and having trouble staying on plane (10-12gph). At 4800 rpm (which the engine seems to be very happy with), I get about 28-29 kts (15-18 gph) depending on conditions and a real nice plane.
The other night, pretty flat conditions, was at ~5200 rpms and got to about 34kts (before I had to slow down at the no wake zone). Speed was still coming up slowly, but I didn't feel like there was a lot of engine left at all. I don't think it was going to get more than 37-38 kts or so - unless top end speed comes on a lot slower than I thought.
After hearing about all the 45-50+ knot boats (incl. some of similar size and power), what's my problem? I have no idea what the dimensions are on the prop - boat is a recent purchase - but its SS and in great shape. Is my engine weak? It seems to be running really nicely, just not lot of power. The trim tabs haven't been working until recently so I'm just figuring them out.
Are these specs fairly normal or am I slow? BTW - All speeds GPS.
Thanks. Jim
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