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  1. tpenfield

    Port, not larboard.

    I've thought that 'port' was designated because in the days of Viking ships that is the side commonly used as the dock side, since the 'steer board' was on the other side of the boat and better kept free to maneuver. And the 'steer board' side because 'starboard' over time . . . :unsure:
  2. tpenfield

    Swap wood panel in upholstery

    No, exterior grade plywood is not normally pressure treated, at least in the USA. Not sure about UK/EU . . . I think it would be obvious if it was
  3. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I'm getting close to completing the internal tabbing and related work on the inside of the planing surface. One thing that I had planned was to have some gussets tied to the stringers. The Naval Architect (NA) said that I did not really need the gussets, but I had already cut and shaped the...
  4. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    The Honda BF350 'U' (30") shaft motors weigh about 775 lbs. :oops: My design calculations were based on 700 lbs/engine. Out of curiosity, I ran the force calculations again using 800 lbs as the engine weight. Forces from engine thrust were already figured using a 350HP engine. :unsure: Not to...
  5. tpenfield

    LiFePO Batteries ???

    Winter 2026 update . . . I've kept the batteries inside for the winter. . . 4-1/2 months so far. I thought to check the voltages today. Each of the 3 batteries was sitting at 13.22-13.24 volts. (y) :cool: I have them charging now for a 'wee bit' so as to go the distance on the remaining winter.
  6. tpenfield

    Lubricate new water impeller rubber ?

    +1 for dish soap.
  7. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Yes, excited about the budget fix . . . I also saved $1,900 by ordering silver instead of white.
  8. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    To get 350 HP, you have to go to the V10 . . . Top of the V8 line (600 ish lbs) is 300 HP.
  9. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Yes, there is about 2,000 lbs of buoyancy in the extension-bracket. Per the analysis the N.A. did, the hull sits with a very slight positive trim. Between the extra weight of the engines and gear ( I mean beer :LOL: ), the boat should be around 1˚ positive trim.
  10. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Actually these engines are heavy, so the overall weight will come out about the same. The Suzuki 350 HP would have been 747lbs, the Mercury 350's would have been 720lbs. These Hondas are 776lbs. (each)
  11. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    This is what's happening for the engines . . . . . Honda BF350's AUDA/AUCDA Optimus 360 Joystick system They are big, but rarely has it ever been recommended to get a smaller engine when it comes to boats :ROFLMAO: . . . I just got back from the re-power shop, having placed the order...
  12. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Wow . . . you would think they would put their best foot forward. I did talk to someone about a pair of used Suzukis (2021). Both gear cases have been replaced under warranty/recall sort of issues. I think it is all a crap shoot as to how reliable the engines are (or not).
  13. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    In the 300+ hp range, I don't think there are leftovers. The re-power craze has gobbled them up like bacon & fries.
  14. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    The Admiral has been busy doing make-overs on the bathrooms. Fortunately there is one bathroom recently re-done so we have a place to :poop: Her commitment to me, so as not to distract from my boat bracket building, is to do most of the work herself. Still, I find myself being a home...
  15. tpenfield

    Calorifier question?

    You might need a right-angle fitting for the hose that connects to the crossover casting.
  16. tpenfield

    Calorifier question?

    Here is a picture . . . not the easiest thing to see. The lower hose is on the re-circulating pump and the upper hose is on the underside of the crossover assembly. There is probably a plug in there now, but it gets a 90˚ fitting to connect the hose. Just above the location is the larger...
  17. tpenfield

    Calorifier question?

    Calorifier . . . That's a new term for me . . . basically a domestic water heater on a boat. (right)? I happen to have 2 Mercruiser 6.2L engines sitting in my garage. The port engine cooling system was plumbed to the water heater. I'll take a closer look and post some pics. Is your...
  18. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    No, because of temperature coefficients of aluminum vs fiberglass, foam, etc.
  19. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    I got the transom inserts done . . . Here is a picture of the process . . . rolling out each layer to ensure that there are no air pockets. I add the resin (~ 5 oz. ) for each layer and then lay the cloth on top of it so the resin soaks upward into the cloth (or mat), forcing the air out. ...
  20. tpenfield

    I/O (Sterndrive) Conversion to Outboards

    Yes . . . But all for a good cause :p My latest estimates, based on the recent changes are Bracket ~ 500 lbs. Hull Modifications/bracing ~ 200 lbs Very little weight reduction overall . . . about 200 lbs.
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