Quote:
Originally Posted by jamesbalog
my 200hp merc will turn 48-4900 rpms with a 19pitch prop the fastest i have seen on the gps is 43. With my normal load of people and gear i get 38-39.
mines also a 81 so its not making 200 at the prop, boat also has bottom paint
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That is not the range your motor should be in at WOT. 5200 to 5800 rpm is what I have been told all my life.
The OLD V200 2.4 L Merc would turn 6100 as they didn't have limiters back when.
Motors never run stronger than right before they pop.
Lean run 2 strokes run real well. Ever notices what happens when a chainsaw starts to run outta fuel.. She definitely picks up some rpm right before she dies.
The piston got hot due to predetonation caused by a lean run condition. That is why she wouldn't turn over hot, the piston was all swelled up and melting. Once cooled down, that piston will often shrink and the starter can turn the crank again. The melting piston leaves deposits of aluminum on the cylinder walls which then gets cleaned off by the piston rings. Stick a ring and well, game over. I still love 2-strokes but the technology is helping to make the 4-strokes lighter all the time. Fuel infection and all, I am coming around to the technology because it works..it ain't cheap, says Captain Obvious..
Best of luck 3 Squids. Been there and done that with Johnrude and a Merc or three...