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  1. Bt Doctur

    Mercruiser Upper leaking oil

    For oil to leak from there most likely is the upper carrier input shaft seal Remove the upper to see if there is oil in the bellow
  2. Bt Doctur

    Bellows sealant, DPS-A?

    bellows adhesive, 3M weatherstrip adhesive, contact cement
  3. Bt Doctur

    4.3 MPI Install Engine Mounts

    are you positive the rear mounts are correct
  4. Bt Doctur

    MERCRUISER BELL HOUSING

    To save everyone else the trouble cut 4 pieces of 2 x 3 at 4,5, 6, and 7 inches With trim cylinders attached and nuts removed activate up trim/trailer button with the shortest piece. . When limit of movement is reached, lower and insert the next longer piece etc until drive comes off. click to...
  5. Bt Doctur

    MERCRUISER BELL HOUSING

    That should teach you a lesson on "prying"
  6. Bt Doctur

    Little more valve lift

    did it many times in the old hot rod days but you had to change the cam, do gasket matching/slight grinding of intake and exaust ports to match the gasket used.
  7. Bt Doctur

    Converting 5.0 mpi to closed cooling

    get a lete model 5.7 standard carb,efi,or mpi package and drop the cats
  8. Bt Doctur

    No Start, but should

    how did you time the motor for #1 TDC compression and how did you install the dist. firing order is 1,3,4,2
  9. Bt Doctur

    How long for water in an I/O to freeze?

    how long does your fridge need to make ice cubes
  10. Bt Doctur

    Maintenance on garboard or brass plug that is leaking.

    Remove the old one, remove any paint where the new one will go , and considering it looks like a bit of electrolsys add a bonding wire using a bolt and nut in one of the holes. So 2 screws and 1 bolt
  11. Bt Doctur

    Cracked Block???

    Given the super cold temps,I suspect there will be a lot more blocks that didnt survive
  12. Bt Doctur

    Help finding a choke

    https://www.carburetion.com/Products/ProductDetails.aspx?part=EC-9011
  13. Bt Doctur

    Mercrusier 5.7 no power to injectors!

    click to enlarge Using a different manual injector power and ground com from the ecm#21 is the main power feed, you need 12 here to start.Then at relay 14 you need 12 v. Fuse 16 is critical
  14. Bt Doctur

    Mercrusier 5.7 no power to injectors!

    MPI or throttle body type
  15. Bt Doctur

    Any Other Ways To Solve Bravoitis?

    click to enlarge
  16. Bt Doctur

    Any Other Ways To Solve Bravoitis?

    To remove the hoses you need access to the screw fittings. with the drive off that one is easy the other is on the inside
  17. Bt Doctur

    Mercruiser 470 vs 140

    most carbs will/might fit.dist will, starter wont.No water pump on a 470 to replace. different bottom end
  18. Bt Doctur

    Tube Part Number??

    He never said anything about removing the old cable and he had to pull it out from the stern anyway. Usually the plastic guide is not visable it`s #30
  19. Bt Doctur

    Tube Part Number??

    Mercury Mercruiser 74639Q02 Shift Cable Bellows - Fits All MCM Sterndrives
  20. Bt Doctur

    Pinion Bearing MC-1/R versus MR

    Without the correct tools and shimming tools its mush easier to just replace with a SEI lower
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