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  1. Scubaproh20

    jet boat project with pics

    I am building a jet boat out of my 14' boat and am using a yamaha jet pump, still gotta decide what motor to use but this i know I needa complete motor pipes carbs mounting plate etc. I want 100hp minimum so far im looking at sea doo 787 and yamaha 800. my current problem is I cannot figure out...
  2. Scubaproh20

    1987 Evinrude 30hp E30ELCUB no spark

    1987 Evinrude 30hp electric start , no spark on either cylinder turns over, enrichment circut works (elec choke) all wires are plugged in no broken or cracked wires. correct spark plugs with correct gap. The coils are not cracked and appear to be good. My questions are 1: what kind of...
  3. Scubaproh20

    Evinrude Fisherman 6HP

    Model 6302Sj Evinrude Fisherman 6Hp Top cylinder: 105psi, golden brown plug Bottom cylinder: 93psi, Very black plug Motor has no spark at either cylinder, probably bad points or condensers will pull flywheel soon. Lower unit is good water pump in unknown condition but no signs the...
  4. Scubaproh20

    Is this part important

    Is this part important for any purpose other than screening out large debris. Say increasing pre ventri vacuum to effect fuel delivery Part #98 http://www.boats.net/parts/search/BRP/EVINRUDE/1970/40073A%201970/CARBURETOR%20GROUP%20ELECTRIC%20SHIFT/parts.html I misplaced mine and my motor...
  5. Scubaproh20

    Guess the motor

    My grandfather called me today and said he aquired a new (project) for me. These are the details I gathered I have not seen it yet. Evinrude 6 HP 2 blade white prop Paint is Blue Grey kind of round "its older looking" Any ideas 50's 60's 70's 80's?
  6. Scubaproh20

    Looking for a driveshaft

    Hello All , I'm looking for a driveshaft for my 1970 evinrude selectric 40 specifically my 40073a. I found one on ebay and the box arrived empty, the part is NLA on all boat sites boats.net and others. I was hoping someone in mn or wis has one in their shop or laying around. I need the part to...
  7. Scubaproh20

    Race / Performance carbs

    I was looking at my 40073A carb and its dissapointingly under engineered. The jet is bulky and unsophisticated and the flow dynamics look goofy with the auto choke. I'm thinking about the obvious like trimming the 1/16th'' extra thread off the mounting screws for the throttle and choke plates...
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