What prop to use for higher top speed

[Nissan Newbie]

I have a 10 1/2' zodiac 320 with a 15hp gamefisher outboard. The prop it has now is aluminium with the markings 9 x 8. What prop should I have for a higher top speed? The motor runs great but I got past by a heavier boat with a 15...he flew past me..

 

[Bondo]

Re: What prop to use for higher top speed

Ayuh,... What are yer rpms at Wot,..??

You may not have any hp left to go faster...

 

[steelespike]

Re: What prop to use for higher top speed

We'll need a year and/or a model number to determine who made the motor for Sears.
The number usually appears somewhere on the mounting bracket.
Also wouldn't hurt to estimate your speed,does the boat plane?
" Flew past" doesn't tell much. your speed and a guess of their speed would help.
Also the other info suggested will help.

 

[Nissan Newbie]

Re: What prop to use for higher top speed

I will check the serial number tonight. I would say i was doing maybe 7 or 8 mph and he was doing14. It planes very fast.