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  1. Q

    1400 RPM loss from 13 to 15 pitch!!!

    I hear you. Things like this annoy the life out me too. 10 years as a professional marine engineer at sea…16 years after as an engineer in renewables. Frustrating eh. Only reason to be mentioned the previous is that I’m not totally convinced that engine should see 6200 without a limiter before...
  2. Q

    Max RPM at WOT 2002 Penta 5.0GXI

    The gauge just isn’t that accurate really. I got the engine data gadget for mine. Tells you exact rpms. There is often a couple hundred rpm difference at the top end sometimes. Between actual and gauge. And 100 rpm variance is common. But trim and weight etc can change the rpm you see a little...
  3. Q

    Fogging oil won't kill engine

    I alternatively just run 2 stroke through her, right before taking her out
  4. Q

    Max RPM at WOT 2002 Penta 5.0GXI

    No. You won’t do damage. It won’t physically let you over rev that engine. Not to say that running at 5000 max rated rpm continuously, is very good for it of course. Just to exempt myself from that 😂. But yeah. I have the mercruiser version. Defo won’t let you much past 5100 rpm for sure. When...
  5. Q

    Max RPM at WOT 2002 Penta 5.0GXI

    Hi. Your tachometer is 100% reading wrong. I have that engine. It won’t let you get anywhere near those rpms for sure. At 5150 or close…you’ll hit the limiter and know all about it when you do. It’s very obvious and should alarm too. Hope that helps.
  6. Q

    1988 mercury 45hp 2 stroke overheat

    Although you may have a good visible stream of water…it’s perhaps not a true indication of sufficient cooling, enough to prevent an overheat at full throttle perhaps. Might be just on the edge of falling short of being enough. The other thing that could be going on, is perhaps the set up of the...
  7. Q

    1400 RPM loss from 13 to 15 pitch!!!

    Just suggesting you try again. That’s all. It’s not me that has an issue with it. It’s the physics that does
  8. Q

    1400 RPM loss from 13 to 15 pitch!!!

    Think you may have left that out ! Regardless. The slip of 1% is still not in the realms of reality. The vessel view won’t be wrong either. You also just wont get 6200 from that engine. Best of luck next year, when you get a chance to get some better data.
  9. Q

    2005 200HP HPDI - Surging Issues

    Think you might be on the right track, with pump intermittently working. Not long ago, I would have agreed with your thinking around it being strange for an electric pump to be intermittent in operation perhaps. Then an old bmw my father has, started overheating intermittently. Turns out it has...
  10. Q

    Back again..

    Welcome back. Looking forward to some prop craic from you, no doubt. Out of interest, can I ask which particular props used your design and went to production? Sounds amazing !
  11. Q

    Lost oil in sterndrive

    Hi. Defo normal. Every time I change the gear oil each year..inlet it all drain out, including the header tank. Then when you put oil in the drive and then fill the tank above…there is always a void between the fill level on the drive and the tank. The oil takes a while to take up this void...
  12. Q

    Winter project seagull outboard

    Amazing. Love to hear things like this. All about nostalgia and memories for me too. Reality is that I’ll be probably taking an old Yamaha 2 stroke along with me, as a back up, for the maiden voyage though 😂
  13. Q

    1992 3.0L Mercrusier - misfire over 2200 rpm

    Just in reply to your last sentence…no. Not if the carb was now compromised. Very common.
  14. Q

    Winter project seagull outboard

    Says lots, that there are still many in use here. The other one we got was from the late 1940’s. It’s just fired into life in the last hour there. For the first time in decades. All it needed was a carb clean, points clean and a fuel tank clean. Amazing. 70+ years old !
  15. Q

    Winter project seagull outboard

    Should be. Looking forward to it.
  16. Q

    Winter project seagull outboard

    Brilliant. I’ve every assumption that they aren’t of much use these days. Just remember seeing loads of them as a kid. Fancied a go at owning one for years since. Likely be an ornamental thing after one outing !
  17. Q

    88 Merc 100hp Electrical issues

    Is that the Volts when running ? Likely not…sounds like a stator or rectifier issue, if not a battery issue.
  18. Q

    Winter project seagull outboard

    Hi all Most will know, I live an old 2 stroke outboard or two in the garage have far too many to count almost and seldom used. For those interested, thought I’d share my latest acquired. Assume there isn’t many over the pond there, but she is a year or two off half a century old…and considered a...
  19. Q

    How much outboard motors have improved.

    Yeah. I had a nightmare there. Totally off track thinking it was a new 4 stroke efi thing. Think I was getting confused with the other post about an efi and props earlier. The few cans of beer during the sail earlier, likely haven’t helped much either !
  20. Q

    1992 3.0L Mercrusier - misfire over 2200 rpm

    Hi. Good chance that you’ve taken bad fuel through it, with water affecting its quality. Having no water separating filter on these, an easy thing to happen. Despite the basic filter in the pump being visibly not appearing bad…they aren’t designed to mitigate the risk of water. So what’s...
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