More horsepower fom a 50 horse

[hct4all]

I have a 4cyl 50 horse and would like to get a few more ponies out of it. Boat is rated for a 60 horse. Will boysen reeds help? Serial number is 5797448. <br /><br />Thanks,<br /><br />Rick

 

[gatorred]

Re: More horsepower fom a 50 horse

try changing gear lube to cem-pe-co high tech it's red gear lube treat your gas with gas o klenz<br />then use good oil to i use cem-pe-co two cycle oil to but i was testing there stuff the gear lub is great it smother run 93 high test gas to i ran 89 in mine the high test isn't needed in mine a 150 xp evenrude it run's on 89 ethonal gas the corn gas I do have a merk 50 too.it ran great try a ss prop too.this is short of tearing motor apart evenrude has a head made like car head milling could up power in car but not merk reed's could help but don't know that much on them.

 

[hct4all]

Re: More horsepower fom a 50 horse

Another question is was this motor actually one of the 40 hp at prop or was it made after they started measuring hp at the prop? What year did they start doi.ng that. The motor year is an 83 I think

 

[WillyBWright]

Re: More horsepower fom a 50 horse

Once the horsepower ratings changed, it dropped to 45. They called it Classic Fifty. It never put out more than that and you'll never get more than a few more Hp out of it unless you wind more RPMs out of it. You'd have the best luck playing with props. If you don't have power trim, that would be a biggie if added.

 

[MercFan]

Re: More horsepower fom a 50 horse

From what I read here so far, boysen reeds don'<br />t work well at all in Mercs.

 

[Nos4r2]

Re: More horsepower fom a 50 horse

it's a lot of trouble to put new reeds in anyway.<br /><br />Usually the best option if you want more power is sell yours and buy a bigger engine.

 

[Chinewalker]

Re: More horsepower fom a 50 horse

The 50s require tearing down to the crankshaft to access the reeds. Lot of work for minimal gain. Running 93 octane won't do anything other than empty your wallet quicker. Best bets are to either:<br />A) Make sure you're getting all 50 ponies as it is. What's the compression in all four holes? Is throttle linkage moving timing to full advance? Are carbs opening up all the way at WOT? Is motor peaking at max RPM with current prop? Lots of stuff you can check, most of which is easy and cheap to do.<br />B) Trade up to a larger motor.<br />- Scott

 

[hct4all]

Re: More horsepower fom a 50 horse

Just to make sure, what should my tach be set at. If I need to give you more information please let me know.<br /><br />Thanks,<br /><br />Rick

 

[Clams Canino]

Re: More horsepower fom a 50 horse

Set it for a 12 pole stator. And 50hp was the most you could crank out of those 44ci fours.<br /><br />-W