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  1. Q

    correct prop for 74 mercruiser 140hp

    That’s a bargain. Is it the older or newer type ? Easily told by the vents it has. Older has the square always open vents..newer has the round pvs vents that can be capped or incremental.
  2. Q

    correct prop for 74 mercruiser 140hp

    To be fair now…I think I have it in my head that Yamaha make some stainless props currently, that they paint for some reason 🤷‍♂️
  3. Q

    correct prop for 74 mercruiser 140hp

    Be unusual to paint a stainless laser 2 perhaps. If it’s the same part number as your old prop. Are we saying your old prop is a laser 2 and stainless ? Or are we thinking that the one for sale isn’t a laser 2 Perhaps ? A laser 2 will have a different part number from any other prop, certainly.
  4. Q

    correct prop for 74 mercruiser 140hp

    Not sure I mentioned pitch there Texas. But generally a laser 2 like for like with the ally same pitch…will not have a detriment on rpms and can even raise rpms due to more lift and speed given. It’s also a smaller diameter in that size…to the ally black max. As we all know. There ain’t no rules...
  5. Q

    correct prop for 74 mercruiser 140hp

    I think comparing outboard power to inboard power as a like for like…isn’t probably a true comparison. Almost always the case that an identical boat hull that had option to go outboard or inboard…the outboard will be a faster boat, should the HP be anything remotely close to each other. I know...
  6. Q

    How bad is it.

    Not in any way as a means of sure thing and she’ll be ok for ever more, by the suggestion…but I personally know of 3 boats with the later derived 3.0 140/135 engines, that have suffered a cracked block and were leaking externally to the bilge. They were sealed up with similar JB weld or devcon...
  7. Q

    correct prop for 74 mercruiser 140hp

    You could stick a good old laser 2 on there, if you find a good used one.
  8. Q

    Using navigation lights with bow lights in unison.

    Here is a video of my lights on. Can understand why they would be annoying to other boaters nearby perhaps. If they don’t annoy folk…the exhausts might 😂
  9. Q

    Using navigation lights with bow lights in unison.

    Hi. I have docking lights from factory on one of my boats. If the reason for having them fitted to yours…is with the thinking that they will let you see where you’re going in open water and in the dark…forget that idea. At best…they might light up a docking area or similar at close quarters…but...
  10. Q

    Verify outdrive lube is clean without totally dumping it?

    Be silly not to change it really. Or at least check what’s at the bottom when you open the plug for a second or two, then change next year. Manual will likely suggest changing every so many hours…or every year…whichever comes first. Added to this…if it’s an alpha with her dog straight cut...
  11. Q

    correct prop for 74 mercruiser 140hp

    Was thinking that myself initially…but not sure if the poster is asking if there is any more speed to be had…50/50 if going to a 19” might gain or lose that. Likely the latter perhaps. Might just put her over her rpm range at the top end too. What’s the rpm range on those older 3.0 engines Scott...
  12. Q

    5.0 GXi Volvo Penta engine vibrates

    If not the diz…look for a couple of loosely fitting HT leads perhaps.
  13. Q

    Double engine failure in ten minutes

    Hi. What’s the history behind the boat and engines and their relationship with each other ? Were these engines newly fitted to the boat ? And was this the first run out with them when this happened? Was just thinking around the installation if so…in particular around the shift interrupt switches...
  14. Q

    correct prop for 74 mercruiser 140hp

    You’re not too bad at that to be fair. You’d likely get away with going down to a 19” too. Can’t remember the rpm range for the old 140…but likely to be about 4200-4600 maybe. I’d likely stick with what you have to be honest. Maybe someone can confirm the rpm range on that engine better than I
  15. Q

    5.0 GXi Volvo Penta engine vibrates

    Hi. It’s looking like it’s miss firing or one or two cylinders aren’t firing for a second there. I’d be looking at the distributor to start with perhaps
  16. Q

    Excessive fuel during fuel filter change

    Is this the fuel filter bolted onto the side of the engine, or is it a pre filter before that ?
  17. Q

    correct prop for 74 mercruiser 140hp

    Not something anyone can answer really..without the more details. Best starter for 10…is get the details of the old prop. If you were happy with the way that was. Replace like for like. No such thing as a standard factory prop really
  18. Q

    Volvo Penta 4.3gxi-f

    Similar to what I was eluding to with the mercruiser inherent errors that aren’t actually there. That’s one of them on that too, I’m sure.
  19. Q

    4.3 Harmonic Balancer

    Hi. Had a friend recently with a hell of a knock off the engine, especially when stopping it or low rpm, when shifting out of gear. Was a 4.3 mpi. Turns out the balancer wheel securing bolt wasn’t home all the way (after some work done). It has a very small torque value…so what happened was that...
  20. Q

    Volvo Penta 4.3gxi-f

    Ah. Got you. Got to be a simple one you’d think eh. Especially being common to both. Any sign of water intrusion at the dash end local to the issue ? Can’t be at engine end you’d think. Be rare chance if it affecting so widely a location
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