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Thread: New 4 stroke race engines?
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12-10-2014, 08:43 AM #16
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12-10-2014, 09:17 AM #175000 RPM
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12-10-2014, 09:17 AM #18
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12-10-2014, 09:46 AM #198000 RPM
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12-10-2014, 12:27 PM #20
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12-10-2014, 12:47 PM #215000 RPM
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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.
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12-10-2014, 12:49 PM #22
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12-10-2014, 12:54 PM #235000 RPM
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That bracket is sweet as hell too.
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12-10-2014, 01:17 PM #24Mirage Jaguar RiverRacer
Polaris PRO785
Bennington 255LCC
Scream & Fly Flying Machine of the Month: September 2005
http://www.screamandfly.com/showthre...ild&highlight=
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12-10-2014, 01:54 PM #25
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.
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12-10-2014, 02:30 PM #26Member
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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.
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12-10-2014, 02:54 PM #27Screaming And Flying!
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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.
83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
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12-10-2014, 03:00 PM #285000 RPM
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12-10-2014, 03:55 PM #29"12" Super Lite Tunnel (11') "88" 25 Yammy twin carb "BANANA SPLIT"
"77" Hydrostream Viper "87" 140 Rude heavy modded w/15" mid, Bobs nose and lwp "DANGER ZONE"
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"Too much is never enough" Keith Richards " Dreams become reality via hard work and perseverance" G.A.Carbonneau
"This coming from an old man that strapped two bananas together, hung a motor on it and calls it a boat" XstreamVking
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12-10-2014, 03:56 PM #30
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.
Regards,
Charlie North
If it ain't broke, modify it.
80 21' Superboat with Yamaha 225 Excel power
76 Glastron to be powered by a 6.2 L92 with surface drive
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