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  1. #1
    Member
    Join Date
    Jan 2016
    Location
    Southern Illinos
    Posts
    76

    Help with a Nissan prop

    Since there's not a Nissan forum i thought i would try this here. I have 1756 G3 Jon with a 20 hp Nissan 4 stroke and a 40 hp mercury, both tillers. The nissan will push my boat around 18-21 mph. That is fine until i fill the livewell with water then it cuts the speed down to around 9-10 mph and doesn't want to plane off. I would like a little more top speed loaded but would really like for it to plane off better. Would a different prop help? The only marking on the present prop is 11.5P, if a different one would help what should i try first? I can do the same load with the 40 and there is only about a 2 mph drop in speed.

  2. Member
    Join Date
    Oct 2014
    Location
    Oklahoma Resident Native Texan
    Posts
    1,027
    #2
    5113-093-09 thats a solas 4 blade 9 1/4 x 9 pitch. If its not already over rpm's with the 11.5.

  3. Member
    Join Date
    Jan 2016
    Location
    Southern Illinos
    Posts
    76
    #3
    Thanks for the advice, i will give that a try. It does not seem to be over revving, if anything it sounds like it bogs down quite a bit when loaded.