15hp race motors please teach me.

[Powerabout]

how did it go?

[Glenno]

It goes hard!
It uses heaps of fuel and is fairly loud.
Believe it or not I have never tried a true race prop on it as I know the ratio in the shifting case is terrible.
I put a 12 pitch stainless with cup of a 25hp on it, spins it up no probs fully submerged. If I ever have a chopper or cleaver around 16p I will wack it on for sure.
I modded that motor because it was free and I have lots of 9.9 - 15 omc parts and I want to learn what works and what doesn't.

[DeanFHobart]

Thanks guys,
Wow 45kg boat , I can do the boat at 45kgs.
I am 74kgs. Are the normal drivers of these boats all kids or do some adults drive too?
Where would I find a race lower unit?
How does the drive shaft adapt?
Is there a water pump or is it just pressure fed?
So many questions.
Cheers,
Glenno

You can google 15SS racing gearcase and follow tons of links to information. www.RacingOutboards.com manufactures them now.

There is a water pump.

Best of luck.