"Dan" wrote in message
...
Calif Bill wrote:

"Dan" wrote in message
...

wrote:

Hi All,

I'm looking for a bit of advice, I've just bought a 1996 Maxum 2000 SCL
(20
ft). The main engine is a 190HP mercruiser but the boat is fitted with
a
transom for an auxiliary outboard.

Can anyone recommend a suitable size of engine for this?

Thanks

I'd skip the kicker as long as you can always reach someone with your VHF
or cell phone - it will detract from the looks and just get in the way.
There's also a very good chance it won't start if you have it hanging
there for a while until your main motor gives out. Also, others have
suggested a four stroke so you can use the same fuel tank. If your
problem is because of the fuel, it also won't work.

If you're still determined to get one, go for a 15hp so you can get
upstream at a reasonable rate of speed. The price difference from a 9.9
is negligible.

Dan


An 8 HP high thrust will drive that boat as fast as any 15-25 hp motor.
It is going to run about 5-6 mph hull speed. I run a Yamaha T-8 on my
21' 3400# boat and I get about 6.5mph and with the old 15 hp Mariner 2
stroke got about 5 mph. The high thrust / big foot motors are designed
for displacement running.

That would be an intersting test. You're right about the high thrust
gearcases but there are also a variety of props available for the bigger
OB's to give them more low-end bite. I'm suprised at your results from
those two motors on the same boat.

the 2 stroke would drive my 14' aluminum boat about 22. I think the prop
would blow out and just make lots of bubbles when tried to run at high speed
as the kicker.