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  1. Scott06

    Newer 3.0L in place of an Older 3.0 QUESTIONS

    https://www.summitracing.com/search/part-type/cylinder-sleeves?SortBy=Default&SortOrder=Ascending&keyword=cylinder%20sleeves&kr=cylinder%20sleeves Yes this 12&3/4" flywheel plus the coupler will adapt it to the old style flywheel cover. The MC1 uses a different rear motor mount spacing until I...
  2. Scott06

    2004 Volvo Penta 3.0L engine knocking

    You need to tear it doen to see what is damaged. Low road take it local machine shop , as outlined quite likely turn the crank and resize the rods do a valve job , may need new pistons if bores are out of round and require boring. high road, get a reman or new base engine swap the components...
  3. Scott06

    Rebuilt 5.7 vortec wil not turn over

    On the intake stroke it will pull air in via a spark plug hole same as it would via the intake valve. on compression stroke it will expel air out the spark plug hole… so yes normal
  4. Scott06

    Rebuilt 5.7 vortec wil not turn over

    Who rebuilt it ? Had an issue with a rebuild years ago machinist resized the big end of the rods incorrectly (at a slight angle) so rod bearings were binding on crank … wouldn’t turn over with starter
  5. Scott06

    Slow plane at high altitude 5.0L MPI, please help

    No not that speed at 2800 rpm I think you just want to know the prop is such that you can get to the upper end of the wot rpm range for both of your altitude situations likely u will need different props for different situations F lmk
  6. Scott06

    Engine Bogging Down When Cold

    Would think probably temp sensor. Seems like it isnt thinking its cold and needs to richen mixture . also would check two common mpi issues IAC valve and the crab style dist cap may be contributing .
  7. Scott06

    New valve cover gaskets and still leaking V6 4.3

    Agreed, a light coating of oil keeps corrosion at bay…
  8. Scott06

    Mercruiser 233 Overheating--Out of Ideas

    The new impeller was this an oem merc impeller or aftermarket?
  9. Scott06

    STUCK 6.2L MPI

    Hard to know that unless you tell us…you intimated that you had to force the engine to turn over with a large torque wrench… so it spun freely you just wanted to see how much torque to turn over. is compression ok only other thought on hearing a ping is if a valve is hung up.
  10. Scott06

    STUCK 6.2L MPI

    You sure the engine was locked up? would think the gimbal bearing or u joints would be a likely culprit especially if water was in bellows. would be worth pulling the drive to check them given what you are describing
  11. Scott06

    Slow plane at high altitude 5.0L MPI, please help

    That’s the best if you can work with a shop and try them out. Looks good from my perspective What is your wot rpm now ? I figured if your wot was accurate you’d end up around 15” pitch
  12. Scott06

    Light u-joint noise hard turn starboard

    My 2003 vintage drive had sealed aka non greaseable u joints Could also be gimbal bearing as well which may be greaseable from outside of gimbal housing If it’s not terrible use it through the season and change at winterization pull the drive inspect for water in bellows check alignment...
  13. Scott06

    Noise from engine compartment when steering left or right

    There is usually an anode there unless you have a mercathode system. That looks more like a beat up mercathode electrode but I can’t tell for sure
  14. Scott06

    Noise from engine compartment when steering left or right

    You don’t have PS pump would be at from of engine you only have an alternator
  15. Scott06

    Acting like a spun prop hub but it's not. What do I try next?

    Check the engine coupler and drive Coupler could be broken Drive could have shredded upper gears or broken vertical driveshaft Would be leaning towards coupler based on symptoms look for signs of burning rubber at rear of engine as coupler connects engine to drive input shaft
  16. Scott06

    2002 Mastercraft 5.7 harmonic balancer moving in and out

    I would tear it completely down and have a machine shop check rods pistons etc before reusing, get a new crank, do a valve job and go. if time is short and money is no issue a new marine 5.7 base engine is $5k...
  17. Scott06

    Hole shot, Mercruiser 4.3L

    In a similar situation with my old boat ( worse on power -3.0) i used Michigan vortex 4 blades 18” fir cruising, 16” fir skiing. saw better holeshot, sternlift and lower planning speed than with my 19”&17” three blades. alternatively i bought all my ss props used off ebay. Took a couple years to...
  18. Scott06

    1990 vs 1992 4.3 block swap

    Sounds just like my 5.0 dont worry about it. Might be exhaust flapper nothing with engine. These pushrod V engines are not super quiet. Either turn up the radio, add more throttle, or drink more beer. Any combo of the three makes noise go away….
  19. Scott06

    seriously need some experts help on this one, no water exits manifolds

    Great to hear.
  20. Scott06

    Slow plane at high altitude 5.0L MPI, please help

    Yes dropping pitch 2” will be basically the same as swapping a 1.62 drive. go through all the checks suggested and verify tach if all is good drop pitch .
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