New 4 stroke race engines?

[Mr. Demeanor]

high performance 4 stokes are gutless, there are people trying in F1, and compared to a 2 stoke they are embarrasing so I hear.
How quick would a hyabusa be with one gear?

Theres definitely a balance that would have to be achieved and with the imports experience I think it would have to be one of them to really pull it off.

[xb03fs]

Mercury's 3.0L 150 2 stroke had been a big success, I am hoping they make a 4ish liter 200,225,250,300 4 stroke in the sub 500 lb range for us recreational boaters with a sporty of course.

[noli]

I said if before and will say it again. Those are ugly, I hope they are fast.

These are looking prettier right about now

[Michael J Giesler]

These are looking prettier right about now

Yea but you still have a 6200 rev limiter

[fastcat]

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[kbirdmon]

4 stroke was not welcomed in motor cross because bigger heavier lunkier.... no two ways about it they rip though.
IF they could engineer a lighter mean 4 stroke that weighs in at 500/525 max weight... Why not.. I'd give one a rip. Lower rpms and a tad more torque..Hopefully get to same horsepower rating.. I sure would.

[noli]

.

[kbirdmon]

That bracket is sweet as hell too.

[MODVP22]

Looks like a webber grill with a propeller.

I knew it looked familiar

[rude tim]

Mercury 4 strokes will be competative the same way Mercury has always been competative, its called adding weight to the competation. If you cant beat them make them add weight.

[robert cruse]

The engine that I was referring to - Yamaha V Max SHO - weighs 505 lbs. This is the same weight as Mercs 300 xs. Granted,the blower would add 20-30 lbs. Im guessing.Put this engine on 20 to 25ft boats and you wouldn't need twins that weigh 800lbs - plus steering etc.

[XstreamVking]

Mercury leads, everyone else follows. 2 stroke or 4. Always been that way, will continue to be the same. Yammaha can't even come up with an original name for their motors. ie, v-max is like black max and opti max. SHO model name is a rip off from Ford sho/svt programs.

[xb03fs]

Mercury leads, everyone else follows. 2 stroke or 4. Always been that way, will continue to be the same. Yammaha can't even come up with an original name for their motors. ie, v-max is like black max and opti max. SHO model name is a rip off from Ford sho/svt programs.

A twin turbo on the 3.0 150 4 stroke that weights less than 450 lbs would be cool....wonder if that could stay under 500 lbs with turbo/supercharger added...3.0 liter turbo would be cool and torquey

[olboatman]

On on that note you can go buy a Yamaha PWC that's 1800cc and supercharged and make 300hp easy, and are light. Surely someone with time and skills could adapt one of these to a outboard midsection

I have wondered about this also--- do they put up good torque #s also? Gary

[CharlieN]

How quick would a hayabusa be with one gear?

Probably pretty good considering the mild tuned Turbo Busa I have been running in a road course car for 11 years now starts pulling good at 1500, has more than 80% torque by 3700 and still has full torque at 10,500. I would see no issues with issues with one on a boat.