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  1. J

    Modifying prop

    I have 2 props for our 20' pontoon. 1) 14-11 3 blade and 2) 13.25-13 4 blade prop. RPM (from dash tach, so take it for what that's worth) w/ the 3 blade is about 5300. from the 4 blade about 4700 Engine range is 4500-5500 so both seem to be within range. Optimum is 5000. Now I called our local...
  2. J

    90hp e-tec OB 20' pontoon prop question & cavitation issue

    Well we bought a new 90 hp 2012 e-tec to put on a 20' Lowe Trinidad pontoon and we were set up w/ a 14-11 3 blade aluminum prop. Problem is 1)we cavitiate occasionally and the motor is set all the way down. 2)Full throttle RPM's (per gauge) is about 5200. Evinrude recommends 5000. now the...
  3. J

    99 35hp Johnson trim/tilt noise

    Well end of the season here and things went well EXCEPT right at the end the trim/tilt started to make a "thump"thump"thump" noise on lowering the motor. Up is fine. Is this anything simple or major? Also one little annoyance is that the trim/tilt guage has a lag. Needle will remain in a...
  4. J

    "trailer hitching" or excessive bounce

    Was pulling a 20' pontoon on a double axle trailer w/ disc brakes (Shorelander). I have an old 91 GMC Sierra and it was bouncing excessively on an interstate area. Shocks seem fine A new road stretch had very little bounce to it. Any particular causes (light tongue weight) or cures? BTW weight...
  5. J

    35hp 1999 Johnson overheating and re-torqueing head

    Ok it's been asked before but I need some more specifics if possible. we are test driving a 20' pontoon w/ a 35hp johnson. Ran for a few hours upriver. went fine. Got back towards the ramp and did some low idle cruising. A few yards before the launch and the hot light goes on w/ the annoying...
  6. J

    Trim tab clearance and alternatives

    Long story short. Had a merc 3 blade prop (48-78120-19). Ordered a Vortex 14" 4 blade prop w/ 20pitch. Problem is in installingthe new prop I have practically zero clearance atthe trim tab (1/16th if I'm lucky). The delrin hub looks fully seated as far as I can tell. Old prop had plenty of...
  7. J

    1984 470 Slave solenoid and ignition coil

    Can't find a troubleshooting diagram for the "slave solenoid" on this engine. Couple of questions. What's it's function? Reason I need to know: I have a full 12v at the ignition coil (voltmeter from here to bat +) as soon as I attach the battery cables. Key in run or not. I assume this is...
  8. J

    Plex endcap for 4" merc heat exchanger

    I've been thinking (dangerous as usual) that on the 470 heat exchanger the round metal endcap on the 4" tube could be replaced by a thick clear plex cap so you could have a real easy visual inspection of fresh water coming in? Dumb idea? Others?
  9. J

    Restore an old Chris-craft deckboat

    I picked up an old Sprint 180 deck boat (1984 I believe from title but NADA has no reference to it). Deck is rotted ect. and would like to find some info on disassembly of the interior for a new stringer/deck replacement. Looks fairly straight forward but would like some ideas on what I'm...
  10. J

    Tach wiring diagram

    Anyone know of a diagram or to what motor this tach may go to?
  11. J

    trailer set-up

    Anyone know where you can find plans/drawings/specs<br />for trailers that came with certain boats. I have a 83 Chris-craft 19' deckboat and would like to rebuild the trailer. I doubt if the trailer that came with it was the original and is just a nightmare to use.
  12. J

    kayot transom

    Nead a little advice on a transom replacement on a<br />1988 kayot k200. I'm looking to buy this boat as a<br />project boat. Owner states transom has leak by I/O<br />Was told that transom needs replacing (by who ?).<br />Boat is in average condition for age. Motor and outdrive are supposed to...
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