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  1. #1

    yamaha pro-v 150 carb hop-up's?

    what can be done to increase the hp on the yamaha pro-v 150 I'm normally a merc man but the old 2L gave up the ghost, can you do it like the merc's and open up the chest and advance the timing and comp anyone have any suggestions
    thanks Pete

  2. #2
    lots of things.... call us we sell what you need....850-769-9391
    www.eagleoneperformance.com


  3. #3
    Call Noah!!! Great guy to deal with. I have always heard that adding the 200 carbs will wake them up. I have a Pro-v 150 here now I just rebuilt the carbs and they have a very small venturi.
    James Perry

  4. #4
    you can use reeds and carbs fom a 200 or a 220 special. the heads on a 220 or a 225 will be better. the 220 tuner is also good. if you can get a horizontal front half, carbs and intake from a 225 with the 220 tuner and heads and use the 150 ignition with the rev limiter removed you will have a solid motor that will rev to 7000 rpm. i run that combo on my allison and it sees 7500 regularly...............benji
    hold on and hope for the best

  5. #5
    Join Date
    Apr 2001
    Location
    Jackson,Tenn.
    Posts
    1,693
    What year model is it?
    Ray Neudecker Over The Hill Gang Outboard Racing

  6. #6
    Quote Originally Posted by whatsamerc?? View Post
    you will have a solid motor that will rev to 7000 rpm. i run that combo on my allison and it sees 7500 regularly
    If you rev it that high, you probably need to bore it a little looser.
    Markus' Performance Boating Links:
    www.toastedmarshmallow.com/performance

  7. #7
    Join Date
    Aug 2010
    Location
    Jacksonville, FL
    Posts
    108
    Whatsamerc:
    You talk about a "horizontal" front half. Which of these pictures is that? The one on the right is what I would call an Excel style, the one on the left is a standard 150. Sorry for the small size. I need to do a rebuild and can get either of these pretty easily.

    !CBt2c9wBGk~$(KGrHqR,!kwE0FEUnU4iBNIz!sU)eg~~_14.jpg!CB60BygEGk~$(KGrHqJ,!loEz+17280QBNJeKdB2F!~~_14.jpg

  8. #8
    Quote Originally Posted by Markus View Post
    If you rev it that high, you probably need to bore it a little looser.
    i have been running it like this for several years now.

    bakerfreak, the pics are too small and i cant tell. if you are wanting to build one the best advice i can give is to talk with ray. he is a wealth of knowlege and one of the few people i have met that will actually talk you out of spending money on needless parts............benji
    hold on and hope for the best

  9. #9
    Join Date
    Aug 2010
    Location
    Jacksonville, FL
    Posts
    108
    Yeah, sorry. Ray, can you chime in? I'm curious as to what front half flows better. The Excel or Pro-V type has really defined intake runners that look like they would flow pretty well. The other type has more of a flat face where the reed block is. Does one have more reeds than the other or a tighter crankcase? My motor is the flat face 175, but I can get an Excel powerhead pretty cheap.

  10. #10
    Join Date
    Apr 2001
    Location
    Jackson,Tenn.
    Posts
    1,693
    The Excell will basically out do the vertical motor for many reasons including the porting, carbs and horizantal front half and intake. If used on your old midsection you need to also change to the old V-6 special or Excell tuner.
    Ray Neudecker Over The Hill Gang Outboard Racing

  11. #11
    Join Date
    Aug 2010
    Location
    Jacksonville, FL
    Posts
    108
    Thanks Ray,
    Sounds like the Excel is the way to go. The motor I'm looking at is a 25", but I guessing that the tuner would be the same.

  12. #12
    motor is maybe early 90's at best? So just basic hot rodding on the motor. motor runs great just needs some more hp for the old vector

  13. #13
    Join Date
    Apr 2001
    Location
    Jackson,Tenn.
    Posts
    1,693
    Check for the model number. Should be on the clamp bracket. They made many versions over the years and different mods to produce the best results.
    Ray Neudecker Over The Hill Gang Outboard Racing

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