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  1. #1
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    What's the lightest 150-200hp available.

    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

  2. #2
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    150opti merc or 175XS mercury opti for a newer motor. Very stingy on fuel. Older 200 merc for a lighter but more thirsty motor.

  3. #3
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    A good looking 235 Rude just came up for sale a couple days ago.

  4. #4
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    He wants to go further than six miles on ten gallons of fuel.

  5. Likes RIVERRUMMER 70 liked this post
  6. #5
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    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.
    Last edited by David; 12-15-2017 at 10:17 PM.

  7. #6
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    Quote Originally Posted by Capt.Insane-o View Post
    He wants to go further than six miles on ten gallons of fuel.
    It's the small bore economy version and looks cool. 399lbs

  8. #7
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    Annapolis, MD ragboat capital of the world
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    Wouldn't a hopped up V-4 140 be suitable?

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  10. #8
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    Or a hopped up big bore F5 , 334 lbs.

  11. #9
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    Or a hopped up Yamaha V4.
    Markus' Performance Boating Links:
    www.toastedmarshmallow.com/performance

  12. Likes Mark75H liked this post
  13. #10
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    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.

  14. #11
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    Decent but if 35 is all the boat will be doing 6gph probably isn't the best. Almost 200 prop is good.

  15. #12
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    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.
    Last edited by racervboat; 12-17-2017 at 11:33 AM.

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  17. #13
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    Nice light boat, good numbers still come from good tune. Those are good numbers.

  18. #14
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    3-4 mpg is what my 200 EFI merc gets on my V-King. It's not bad. But it would be 8 mpg or so with a 175XS opti.

  19. #15
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    When I was racing I had a 9gal tank with 7gal in it ,a few hot laps and a few cautions and restarts and back to back 10 lap heats [20 mi] 1 mi laps I came out of the water with about two gals left - won many races also with that set up. formula vee mod

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