You really need to know what your current rpms are. For more speed you want
to prop about 400 rpms below max rpms.
An increase in pitch of the prop by no more than 2" will probably give you
that but you really need to know your current rpms to be sure.

Other than that, you can increase power by making engine mods such as
shaving the head to increase compression. This will require a change to the
carb jetting and also require you to run 93 octane fuel. It will make a
difference but for the cost - I would sell your engine and purchase a 5 hp
or whatever you can use instead.


--
Tony
My Boats and Cars
http://t.thomas.home.mchsi.com
"Louis" wrote in message
om...
I have a 1996 Mercury 3.3 HP 2 stroke outboard that does a decent job.
Recently, I ran aground and chewed up the prop. I need to replace it
but here's where the question popped up. Is there a way to increase
the speed/power of this motor with a different prop (or any other
means)?

I see that there's an optional Black Max prop for this outboard but I
don't know if it make any difference except in price.

Is there anyway (prop, fuel, plug or anything else) to increase the
power and speed from this outboard without having to buy a higher
horsepower outboard?

I'm hoping that there's a way without damaging the outboard. Any
experience or suggesting would be greatly appreciated!