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  1. B

    what pitch prop 3 vs 4 blade

    let me start over sorry for my mess ok i have a 2.5L 120hp mercuiser with a 15inX17p 3 blade aluminum prop it is reving a little hard at 4800rpm and about 35mph its on a 16ft tri hull fiberglass boat i dont know exact weight but i think its close to 2500lb fully loaded its not really a very big...
  2. B

    what pitch

    I have a 1977 tri hull 16ft with a 120hp mercuser pre alpha the rpm range on the motor is 3900 4300 dont really know what it weights the prop that i got with the boat is reving 5000 and i can not figure out what pitch it is
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    maybe a dumb prop ?

    i have a 1977 mercuiser pre alpha. I wanted to know if the props from a alpha 1 would interchange
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    merc 400 1961 45 hp

    I was wondering if any one new of a way to check for cracks in a cylinder i over heated it a little bit last year when water pump went out and the hot bulb was out i've got fire on all 4 cyl but the 2nd one keep loading up cant tell if its carb flooding or water getting in there any ideas would...
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