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  1. tpenfield

    Happy Birthday Bondo !!!

    Today is your birthday? :cool: Have a great day (y) 🎂🥳 🎁
  2. 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.
  3. tpenfield

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

    Cupped prop. . . probably making the difference.
  4. 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.
  5. 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...
  6. 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...
  7. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    Spraying S.F up under the flywheel ? that's a new one to me :unsure:
  8. 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...
  9. 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...
  10. 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.
  11. 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).
  12. 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...
  13. 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 . . .
  14. tpenfield

    ECM Swap ? Plug and play ???

    Use PMs to the OP to discuss personal transactions further. :)
  15. tpenfield

    1990 Bayliner 2651 resto

    A judgement call in the fuel tank as to if it can be saved. Check to see if there is a certification label with the material and thickness. I would not go with any pits that are deeper than 1/3 the thickness. Also see if you can get a glimpse inside the tank for any internal corrosion/pits...
  16. tpenfield

    1975 Merc 7.5 thunderbolt hard starting

    My 1969 7.5 Mercury is a '5 pull' start, but it always starts. I did at one point have to fully disassemble the carburetor (Tillotson carb IIRC) and do a re-build kit on it. Also, assuming you have done the primer bulb thing to get fuel up to the carb. I usually have to start the engine on...
  17. tpenfield

    Mercruiser 6.2 cracked engine block from cold

    Not sure what you are asking. This information (part & price) came from online. Where are you located?
  18. tpenfield

    Old 9.9 Mercury looking for year made. 0B390028

    +1 for 1989 model year. Looks like there is a 'tiller shift' and a 'side shift' version of the motor. So, assuming to are looking to take a 'side shift' and make it a 'tiller shift' (and throttle). It might be easier to get a tiller version of the same/similar motor. :unsure:
  19. tpenfield

    Mercruiser 6.2 cracked engine block from cold

    6.2L (377 Cu In) V8 Mercury 6.2 MPI 300 HP [2A530776 & Up] - Cat.# 90-8M0124044 The cylinder block is listed as not stocked separately. There is a long block P/N . . . 8M0114814. Lists for about $11,000 USD
  20. tpenfield

    Trouble getting tags for trailer

    I'd double check that with the WV website. Usually, if you have the previous title, there is no need for previous registration.
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