2003 40 HP Yamaha

[RECONER]

Hey everyone, I am new to this board and I find it very interesting. I am running a 10 by 15 ss prop from yamaha, it has a great hole shot and alright speed (32 mph), the boat I am running is a semi v 600 lb aluminum boat. I know this isn't a big outboard but could anyone recommend a better prop for top end speed, thanks for the help.
:cool:

[Ron Hill]

How many splines? What boat are you running this motor on?? Any pictures???

I make a ton of crazy props...

[RECONER]

The boat is a semi v G3 aluminum boat. Off hand I do not know how many splines there are, I will get back with you on the splines.
Thanks:cool:

[RECONER]

The boat is a 2003 G3 semi v aluminum boat- Prop size is a 10 1/4 x 15 ( G series ) it has 13 splines.
Thanks :cool:

[Fast Fred]

ware are the rpms at at full speed?

[RECONER]

Between 4800 / 5000:cool:

[Fast Fred]

can we get a look at her on the transom?, sounds like she could go up. 5500-5800rpms is ware ya want it.:cool:

[RECONER]

Transom

[Fast Fred]

got to go UP. too deep:cool:

[RECONER]

Thanks for the info Fast Fred, any info on a performance prop for this 40 :cool:

[j nye]

change the exhaust tuner to a 50 hp yamaha will give more speed they choke the 40 down to 40 hp this way the carbs are larger to but you dont have to change them the tuner will free that bad boy up . go up 3 thousants on your main jets if you change the tuner to the 50 hp .it cost about 50 bucks new from yamaha.

[RECONER]

Thanks for that info J yne