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  1. tpenfield

    Replacement / custom capacity plate sources

    Google "USCG Capacity Plaque Replacement" there will be some options.
  2. tpenfield

    1979 Sure Cast side hull questions

    Do you know if that is a foam-filled hull, like a Boston Whaler.? The older boats did have a wood transom, IIRC. If so, you could do some 'test' holes - low on the inside of the hull to see if you get water.
  3. tpenfield

    Mercruiser 6.2 cracked engine block from cold

    OK - Let's summarize where things stand. The OP's questions . . . Can you please tell me if it is possible to replace the Mercruiser block with a block from the car? No . . . For this engine, being the new Mercruiser in-house built casting and parts it is unique to Mercruiser and not made...
  4. tpenfield

    Mercuiser 357 mag low compression on #6 (120 psi)

    I'd get a decent gauge and run your own test to see what reading you get for the cylinders, particularly #6. I assume the inspection was pre-sales? Is the deal still pending?
  5. tpenfield

    1979 Sure Cast side hull questions

    If you've got a wet transom, then probably water elsewhere in the hull, which would explain the bulging sides.
  6. tpenfield

    2002 4.3L mercruiser

    Also, a bit of history on the boat/problem would be helpful. New-2-You? or was it once working properly?
  7. tpenfield

    1975 merc 7.5 steering tension

    There is a friction plate underneath the top of the transom bracket in between the 2 clamps. Usually the problem is being too stiff, rather than loose. Here is my thread about replacing the swivel with a stainless steel piece...
  8. tpenfield

    Happy Birthday Bondo !!!

    Today is your birthday? :cool: Have a great day (y) 🎂🥳 🎁
  9. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    I suspect there was something 'stuck' in the carburetor (or reed valve) and running it with the fuel system cleaner got it worked out. BTDT.
  10. tpenfield

    Replaced prop with the "same" spec prop. Loss of bottom end.

    Cupped prop. . . probably making the difference.
  11. tpenfield

    OMC Hi-Vis gear lube

    Welcome to iBoats. Please review the forum rules regarding posting to old post, dormant for over 90 days. Closed.
  12. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    Still thinking you have a fuel problem. Did you run a heavy dose of fuel system cleaner (of your choice) in the fuel? 15 minutes is not very long, but probably OK, if you had fuel system cleaner in the gas. Time to open the Toolbox. :LOL: Maybe a full rebuild of the carburetor - replace...
  13. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    OK, understood. Are you also using starting fluid into the carburetor to get the motor to start? (you mentioned adding some fuel directly to the cylinders . . .) I'd get the engine running, have a hefty amount of fuel system cleaner in the gasoline, go boating so the engine gets run under...
  14. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    Spraying S.F up under the flywheel ? that's a new one to me :unsure:
  15. tpenfield

    ECM Swap ? Plug and play ???

    I think @alldodge is one of the few folks here who had their ECM tinkered with (by a high performance marine engine mechanic) to gain some HP on the top end. Certainly not a Plug 'n Play sort of undertaking. I have been running ECM/PCM controlled engines for about 11 years, and would say that...
  16. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    Hard/impossible to see the seals, but if you can get the engine running you can see if you are getting any signs of fuel running down the outside crankcase. Not sure about the lower seal . . . Also the crankcase halves are held together by about 6 bolts on each side. They should be plenty...
  17. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    Sounds like you have a fuel problem, since you have covered the other bases. You can try some of the snake oil stuff (PowerTune, SeaFoam, etc.) to see if that improves things. Otherwise you would be opening the toolbox as mentioned.
  18. tpenfield

    Stamas 244 freedom

    You probably won't find anything - often documentation of the details on the boat's systems, wiring, plumbing, etc. never existed. The joy of older boat ownership is that you get to figure it out for your self (sorry to say).
  19. tpenfield

    1979 Sure Cast side hull questions

    Check the HIN on the starboard side of the transom. GSD Boat Builder Search and Recall results: The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is GSD. This MIC (GSD) stands for the company name Godspeed Boatworks which is currently In...
  20. tpenfield

    Videos as attachments?

    If you mean 'send' as in a Private Message (PM), there is the option to do it. I have not tried it, but . . .
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