Yamaha 4 stroke vs 2 stroke

[Capt. Mackie]

I am motor shopping in the 200 HP range. I've been told that the 4 strokes offer about a 30% fuel savings over the 2 strokes. Is this true? Any thoughts on the 2 stroke vs 4 stroke debate would be appreciated. thanks.....

 

[JB]

Re: Yamaha 4 stroke vs 2 stroke

Ahoy, Capt. Mackie.<br /><br />Well, it depends.<br /><br />Carbureted 2 strokes get the worst fuel efficiency. They usually offer the least weight per hp and cost least.<br /><br />EFI 2 strokes are a bit better than that, weigh more, cost more.<br /><br />Carbureted 4 strokes are even better.<br /><br />EFI 4 strokes and DFI 2 strokes get the best fuel efficiency, as much as double some carbed 2 strokes. They are the most expensive and, with some exceptions, the heaviest.<br /><br />All 2 strokes use oil all the time. Four strokes only use it at oil changes. The real difference is that you can decide where the oil from the 4 stroke goes next.<br /><br />Good luck.

 

[bossee]

Re: Yamaha 4 stroke vs 2 stroke

Hi,<br />If money is no problem and You want a CARB 3-star rated 200 hp outboard there is for the moment only 3 to choose I belive:<br /><br />Yamaha F200 (EFI) 4-stroke<br />Suzuki DF200 (EFI) 4-stroke<br />Honda BF200 (EFI) 4-stroke<br /><br />I do not think Johnson has a 200 hp 4-stroke (yet) but it would be the same as a Suzuki since all their 4-strokes up to 140 hp has been "Suzuki" so far but painted white.<br /><br />Yamaha 200 HPDI and V-Max 200 HPDI is not CARB 3-star rated, only 2-star.<br /><br />Mercury 200 hp (Optimax 2-stroke DFI) is CARB 2-star rated only.<br /><br />Evinrude 200 hp 2-stroke (DFI) is only 2-Star rated as far as I know.<br /><br />If You do not care if it is CARB 3-Star rated or not You have many 200 hp outboards to choose... difficult task to make a selection. But it is a fact that the direction for 2-strokes are DFI (Direct Fuel Injection) since that makes it possible to have the 2-strokes more environmentally friendly and possible to get them CARB 2- or 3-star rated. For example Mercury Optimax DFI 2-strokes 75-135 hp is actually CARB 3-star rated and that is great news. Hope more models and other manufatcurer follow this for their 2-strokes (for example Evinrude with the E-Tech line of 2-stroke outboards has done that).

 

[BRIAN03]

Re: Yamaha 4 stroke vs 2 stroke

Bo You are the man. We need you in the states. Two stokes forever.

 

[Forking River]

Re: Yamaha 4 stroke vs 2 stroke

2 Stroke......4 Stroke........Go for either at the 225 power level. Don't forget the horsepower aka the Colts will always outperform the wing and a prayer Eagles.