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  1. Scott Danforth

    4.3 OMC Cobra and or...

    9.3 is same as my turbo motor in my daily. many of todays VVT motors are running 11.0:1 (including the Volvo Penta 4.3) many Mazda's are now running 13:1. so yes, compared to todays vehicles, 9.3:1 is low however your motor is an early gen 2 or 3 being a 92 OMG. 92 is a transition year...
  2. Scott Danforth

    75 Chieftain Express 22’

    bet they are only about 15 gallons. measure length x width x height and then divide by 231 to get gallons looks approximate 4.5 x 13 x 58 which is 14.7 gallons
  3. Scott Danforth

    Bedliner for a Keelguard Type Bow Protector (on Aluminum)?

    go with a keel guard
  4. Scott Danforth

    4.3 OMC Cobra and or...

    premium fuel will only cost more at the pump. it wont help your motor the only benefit you will get with the low compression 4.3 (yes, its a low compression motor compared to many motors regardless of boats or cars) is if the premium fuel is e0 your still spinning your motor too low RPM...
  5. Scott Danforth

    winterizing merc?

    stick a wire up the plug fittings and bust the crud loose measure it. a 7" spark arrestor is standard.
  6. Scott Danforth

    Craigslist /marketplace or junkyard for donor motor?

    vortec block with your existing heads/intake/carb is no additional power vortec heads and 4-barrel intake/carb is about 35-40hp on the 4.3
  7. Scott Danforth

    1987 5.7 omc outdrive

    could be bad gears, could be simply a broken u-joint. pull apart and assess the damage
  8. Scott Danforth

    Stickies on Winterizing 3.0 cobra

    first, as soon as the thermostat opens, it closes, so all the anti-freeze in the block-buster 2000 kits or the scam-co kits simply goes out the transom the OMC has the water pump at the same height (crank centerline) as Volvo Pentas and the Mercruiser Bravo's drain all the water as indicated...
  9. Scott Danforth

    Craigslist /marketplace or junkyard for donor motor?

    the only benefit of a "vortec" block is the vortec heads the downside is the electric fuel pump (yes, the mechanical pumps are superior to electric) all 4.3's from 1988 on were rollers (roller cam) so yes. you could put your non-vortec heads on a 1996 and later block. however upgrading the...
  10. Scott Danforth

    Sewing machine reco for canvas

    woodonglass uses an old singer
  11. Scott Danforth

    1987 5.7 omc outdrive

    depends on what is wrong with your drive
  12. Scott Danforth

    Craigslist /marketplace or junkyard for donor motor?

    very little benefit going to vortec heads and keeping a 2-barrel. sort of like trying to run a marathon while breathing thru a straw. (also very little cost difference in the intake) if you are planning on keeping the 2-barrel, save money, just rebuild what you have.
  13. Scott Danforth

    Craigslist /marketplace or junkyard for donor motor?

    you dont want any automotive accessories (you cant use them) you only want a long block (short block and heads) as you need the marine accessories, rotating electrics and ignition system. you will need to buy a new intake as your non-vortec intake wont work on a vortec headed motor. if you...
  14. Scott Danforth

    Flooding...

    6" of water above the floor means the starter and alternator were submerged. the crank centerline was under water. pull the starter and alternator and go thru them. pull the drive and get the water out of the bellows
  15. Scott Danforth

    Adhesive

    what are we trying to fix? the sender - buy a new one.
  16. Scott Danforth

    Gas vapor out the secondaries at WOT

    pull the exhaust manifolds, if its rusty valves, the exhaust ports will look like rusty hell. at that point, you are pulling the head.
  17. Scott Danforth

    Stickies on Winterizing 3.0 cobra

    about 3/4" above the oil pan rail, mid block under the manifold. it will simply be a 1/4" pipe plug
  18. Scott Danforth

    Remove quadrant gear and Stern leg is stuck in down position

    connect the ratchet strap to the lower unit the two large hex bolts are the cap bolts. just a turn is all that is needed.
  19. Scott Danforth

    Gas vapor out the secondaries at WOT

    or leaking exhaust manifold and rusted valve seats. BTW, since a new motor is 150 psi, if you have 180-200 psi, you either have water in the cylinders or you have a bad gauge
  20. Scott Danforth

    Epoxy type to use in water jacket

    aluminum enhanced enecon
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