What's the lightest 150-200hp available.

[bobby minis]

I'm building a copy of a 16' Donzi. What's the lightest 150-200hp motor available. No open exhaust. Any of the 4 strokes get close th the 2 sreokes. Thanks

[XstreamVking]

150opti merc or 175XS mercury opti for a newer motor. Very stingy on fuel. Older 200 merc for a lighter but more thirsty motor.

[FMP]

A good looking 235 Rude just came up for sale a couple days ago.

[Capt.Insane-o]

He wants to go further than six miles on ten gallons of fuel.

[FMP]

He wants to go further than six miles on ten gallons of fuel.

It's the small bore economy version and looks cool. 399lbs

[Forkin' Crazy]

What about a 200 2.4 with the chrome lined cylinders? That drops what? 10-15 pounds? Plus with a single ram, not sure if it is lighter all in all compared with the integral, but you can use the external trim pump as ballast. My offshore boat has the trim pumps under the deck!

He wants to go further than six miles on ten gallons of fuel.

I ran my mod '80 235 on my Allison XB CompPro 110 miles plus a bit of playtime and used 25-26 gallons. Cruise speed was around 70 swinging a 29" wheel. I played with the trim watching the GPS and RPM.... I'll put it up against any Merc!

[David]

Gen 1 Etec 150 HO or 200 small block, 418 lb
Mercury 150 or 175 Pro XS, 431 lb

4 stroke claimed weights are heavier and do not include oil.

[Mark75H]

Wouldn't a hopped up V-4 140 be suitable?

[FMP]

Or a hopped up big bore F5 , 334 lbs.

[Markus]

Or a hopped up Yamaha V4.

[XstreamVking]

The weight and performance given by a hopped up motor would be more than off set by the xtra fuel that it would burn and would need to be carried. A 175XS would have a 6 gph fuel burn at 35 mph on reg gas with nearly 200 hp at 430#s. So figure about 6 mpg with a good prop and with a 30 gal tank you would have a range of 150 miles with a small reserve. Hard to match except with an e-tec 150hp which are strong 150 hp motors.

[FMP]

Decent but if 35 is all the boat will be doing 6gph probably isn't the best. Almost 200 prop is good.

[racervboat]

My 16ft Allison with my omc v-4 mod motor this summer with RJ next to me in his viper went from champlin to coon rapids dam and back gps said round trip 13 mi I have a 8 gal fuel cell left with 7 gal came back with over 4 gal left and we were at wot 75 mph + 75 % the time never less than 60 mph ? motor guess weight 240 lbs ? ita a 12 inch mid motor.

[upyours]

ran my 16 ft. from fanning springs to Ellie Ray's and back on 11 gallons V4 looper

[FMP]

Nice light boat, good numbers still come from good tune. Those are good numbers.