13 x 19 on 3.0l merc

[snake91876]

i found a good deal on a 13 x 19 aluminum prop. i currently have an unknown diameter 17p prop on heavier 18 ft bowrider with a 3.0l 135hp all are 1987 models. the boat turns 5200 rpm at 32 mph which i know is reving the crap out of it. i dont know if i can run this 13 x 19 what will it do for me.

 

[steelespike]

Re: 13 x 19 on 3.0l merc

A 13 X 19 should put you about 4,800 with a little more speed and less hole shot.I'm guessing rpm range is 4600 to 4,800 but I would keep it at 4,600.Of course you could change to the 17 for skiing just don't over rev.
You can figure about 200rpm change for each inch of pitch change.

 

[Bondo]

Re: 13 x 19 on 3.0l merc

i found a good deal on a 13 x 19 aluminum prop.

Ayuh,..... My Guess is,.. That's a prop for a mid-sized Outboard.....
It probably has a 4" diameter barrel,...
It'll slide onto the propshaft, but the body will be Too Small,+ Ventilate Terribly....
Most I/O props are larger, like the Large case Outboards,+ Usually are in the 14" diameter neighborhood....

 

[snake91876]

Re: 13 x 19 on 3.0l merc

i think it has a 4 1/4 inch barrell will this still be too small