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  1. Scott Danforth

    Mercury 7.5 steering arm bracket help

    Ted, yours appears to be the earlier cowling. Mine were 1985 motors. @Dinglydel what year is your 7.5?
  2. Scott Danforth

    Specific paint for outboard motor?

    same paint that @Woodonglass uses to paint boats can be sprayed. here is me mixing paint to spray the outdrive https://forums.iboats.com/threads/1988-rogue-2420.486013/page-23#post-3436013 I also touched up the outdrive with a preval sprayer.
  3. Scott Danforth

    No spark plug spark... 170 MC , 1985 Sea Ray

    one wire on the + side of the coil goes to the R terminal. this is the source for voltage ONLY during cranking. this is the tan wire called out on the schematic the other wire on the + side of the coil is connected to the resistance wire in the harness, and goes back to the key switch. this...
  4. Scott Danforth

    Question: Sealing underneath sub-floors

    I prefer having the area open underneath and making sure you dont get water in the bilge to begin with.
  5. Scott Danforth

    No spark plug spark... 170 MC , 1985 Sea Ray

    change your impeller. running for just a few seconds without water will toast an impeller
  6. Scott Danforth

    Swapping out 3.0 for 4.3 mercruiser.

    bayliner did side mount 3.0's at the same spacing / location as 4.3's so they could drop in either a 4.3 or a 3.0 into the same boats.
  7. Scott Danforth

    My serpentine belt tensioner doesn't seem to work right

    By the way, the instructions shown are wrong, it says to turn counterclockwise and should read clockwise. note the location of the spring arm pivot to the idler bearing center, it can only turn clockwise to release
  8. Scott Danforth

    Engine Serial Number Decoded

    you didnt get all the paperwork then. in addition to the bill of sale, you need the signed title and/or signed registration the DMV/DNR/AHJ whatever you have that registers boats in your area will only need the BOS and signed title and/or registration. you may have an issue trying to...
  9. Scott Danforth

    Swapping out 3.0 for 4.3 mercruiser.

    remember, a jet boat motor is hard mounted to the pump housing. different animal for mounting. cant compare at all.
  10. Scott Danforth

    My serpentine belt tensioner doesn't seem to work right

    you are turning the bolt the wrong way you turned counterclockwise vs clockwise, all you did was remove the bolt holding the idler on the spring loaded arm. do not run like that, it will walk that idler off its post and fling it at your head. now put the bolt back in and turn clockwise, and...
  11. Scott Danforth

    5.7L 350 - 2003 - MAP/ MPI Horizon - Water Distribution Housing ISSUE

    put a 60 watt incandescent trouble light in the bilge, it will keep the temp in the bilge above freezing. then remove that whole air-pump contraption BS that mercruiser puts on their overly complex motor plumbing. you will find that the hoses going to the lower block drains are probably...
  12. Scott Danforth

    No spark plug spark... 170 MC , 1985 Sea Ray

    yep, that is it. follow the wire from the R terminal (R is for relay, sometimes its call I for ignition) that is your feed to the coil + for cranking. now, start at the coil + on the motor, follow that wire to your starter and fix what is broken/not tight/corroded
  13. Scott Danforth

    Spark plugs, Volvo numbers don't match

    amazon
  14. Scott Danforth

    Swapping out 3.0 for 4.3 mercruiser.

    Why would you want to? First, it would be a nightmare to align Second, it wouldnt handle the torque
  15. Scott Danforth

    Engine Serial Number Decoded

    You did get all required paperwork with the boat when you bought it, correct? Bill of sale, signed registration card and/or signed title. Your boat is a 1986 OMC with cobra outdrive, the motor is a 1986 4.3 V6 rated at 175hp as stated above The motor serial number from OMC is riveted on the...
  16. Scott Danforth

    old 200 Mercury

    your stand is straight up, your transom is angled.
  17. Scott Danforth

    The Equipment Wish List - Recommendations??

    I am still getting decent enough resolution above 8mph. I believe the spec is 12 knots which is 14mph I will look again next time Im out.
  18. Scott Danforth

    Which Motor To Use

    if you want fuel economy, get a much newer motor..... like a newer 4-stroke. other than the ignition your 135hp and 140hp motors are essentially the same. both thirsty in-line 6-banger outboards
  19. Scott Danforth

    Looking for best 2 cycle motor

    Dry or wet?
  20. Scott Danforth

    1996 Volvo Penta 7.4 will not stay running

    A test port fitting and a mechanical fuel pressure gauge. If you are reading 7-8 psi, it will open the needle and seat and flood your carb However after cranking, if your fuel pressure drops, its either electrical or you may have a restriction in the line or your new pump may not be good
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