Below are the performance specs for the 228 Grady White with the F200 Yamaha
followed by those with the F225 Yamaha. The data seem to indicate the F200 is a
better performer. The recommended cruise RPM is 4000, but the F200 is *faster*
than the F225. There is about a 360lb difference in the accessory weight (from
something??), but would this account for the difference?

Also, what's the simple difference between a Yamaha 200 HPDI and the current
engines. Is the HPDI a two or four stroke? I'm looking at an ad for a 2001 GW
228 w/Yamaha 200 HPDI engine for $31865.

Back to the 228 Performance Data List



Engine: F200 Yamaha Four-Stroke
Test Date: 3/7/2002
Prop Size: 15 1/4" x 17" SWS
Accessory Weight: 961 lb.
(including fuel, persons & gear)
Hardtop: No
Bow Pulpit: No
Optimum Cruise: 28 MPH @ 4000 RPM

Top Recommended RPM: 5000 - 6000
Performance Tests at Optimum Conditions
RPM MPH GPH MPG
1000 4.6 0.9 5.1
1500 6.3 1.5 4.2
2000 7.9 2.4 3.3
2500 8.5 4.1 2.1
3000 14.2 5.2 2.7
3500 22.6 6.6 3.4
4000 28 8.1 3.5
4500 32.7 9.8 3.3
5000 36.1 12.9 2.8
5500 40.2 15.9 2.5
6000 44.1 18.9 2.3



Engine: F225 Yamaha Four-Stroke
Test Date: 6/19/2001
Prop Size: 15 1/4" x 17" SSM
Accessory Weight: 1322 lb.
(including fuel, persons & gear)
Hardtop: Yes
Bow Pulpit: No
Optimum Cruise: 27.2 MPH @ 4000 RPM

Top Recommended RPM: 5000 - 6000
Performance Tests at Optimum Conditions
RPM MPH GPH MPG
1000 5.2 1 5.2
1500 6.7 1.56 4.3
2000 8.3 2.35 3.5
2500 9.2 3.6 2.6
3000 14.1 4.25 3.3
3500 20.1 6.26 3.2
4000 27.2 8.06 3.4
4500 31.75 9.91 3.2
5000 35.7 12.51 2.9
5500 39.7 16.4 2.4
6000 43.2 19.02 2.3



--
John H

"All decisions are the result of binary thinking."