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I had a legthy converstion with guy who has been a tester for Yamaha for many years.
He now works for a boat yard and has sea trialed many boats with all kinds of power.
He said he tested a 23 with the 250 HDPI 4-St. and thought is was propped wrong. But is was propped right it just did not have the umpf.
On his own boat he is not going with 4-str at all. rather he opted for a 225 ficht over the 250 HDPI.
More power out of the hole, better fuel comsumption, and a higher top end due to the lighter weight. Only draw back is the additional oil, but again the new injected models run very lean with oil, NO smoke.
I was surprised at his remarks, but he has tested quite a few engines and says the 4-Str are just not there yet in the big blocks.
Just remembered he said the 250 HDPI was only putting out about 230 HP at the top of the curve. The 225 Ficht puts out 237. Thats why its got more umpf.
Last edited by Van; 03-27-2003 at 09:16 AM..
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