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  1. Scott Danforth

    Fuel hose size ?

    the new 4.3 is LS based. still GM, https://gmpowertrain.com/products/lv1-engine/
  2. Scott Danforth

    What is this repair going to take - hull damage

    no, those pics are out of focus.
  3. Scott Danforth

    96 caliber 1 5.7l i.o. misfire under load low end only help!

    Check fuel pressure If you have a crab cap, change it Generally a lean sneeze on accelerating is running out of fuel
  4. Scott Danforth

    What is this repair going to take - hull damage

    of all the damage, this is the only one that I am concerned about it looks like it may be a prior repair and you have water dripping from the gouge the rest of them can be filled with thickened gel simply start with 80 grit sand paper, clean the gouges really well, build up with thickened...
  5. Scott Danforth

    Mercury 7.5 steering arm bracket help

    what color are the decals? Blue? that would be 1982-1983, or Brown 1984-1985. my guess is you have a 1985 since the serial numbers for 1985 start with 6611886 and go up to A196291 these exploded views may help...
  6. 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?
  7. 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.
  8. 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...
  9. 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.
  10. 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
  11. 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.
  12. 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
  13. 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...
  14. 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.
  15. 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...
  16. 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...
  17. 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
  18. Scott Danforth

    Spark plugs, Volvo numbers don't match

    amazon
  19. 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
  20. 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...
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