Yamaha 115hp power up
 

Hi everyone,
I have a Yamaha 115hp and would like to up the power output to 130hp
or even 140hp. The specs for these motors is all the same so it must
be timing and /or jets in carbies.

Has anyone done this and could you tell me how.

Thanks

Yamaha 115hp power up
 

Billgran wrote:
wrote in message
oups.com...

Hi everyone,
I have a Yamaha 115hp and would like to up the power output to 130hp
or even 140hp. The specs for these motors is all the same so it must
be timing and /or jets in carbies.

Has anyone done this and could you tell me how.

Thanks



Contact Marine Performance, Inc. Nixa, MO (417)725-5746, also known as
Hydrotec marine.



I thought modifying outboard motors for more power for non-racing use is
now prohibited, at least as of some model year like 2000. Is that not
true?


--
Del Cecchi
"This post is my own and doesn’t necessarily represent IBM’s positions,
strategies or opinions.”

Yamaha 115hp power up
 

jaxam2 wrote:
I have a Yamaha 115hp and would like to up the power output to 130hp
or even 140hp. The specs for these motors is all the same so it must
be timing and /or jets in carbies.

.....and possibly heads and piston shape and compression ratio as well.

Billgran wrote:
@hotmail.
Contact Marine Performance, Inc. Nixa, MO (417)725-5746, also known as
Hydrotec marine.


Del Cecchi wrote:
I thought modifying outboard motors for more power for non-racing use is
now prohibited, at least as of some model year like 2000. Is that not
true?

Prohibited? In the USof A??? (sounds unconstitutional to me)
BTW, I have the opposite situation. A 200hp Mariner that I'd like to
trade off some horsepower for better fuel consumption.

Rick

Yamaha 115hp power up
 

Yamaha 115hp power up
 

I thought modifying outboard motors for more power for non-racing use is
now prohibited, at least as of some model year like 2000. Is that not
true?

I live on the other side of the world .. in Australia. I don't know of
any laws like that hear and the motor will still have all the signage
of a 115Hp.

Yamaha 115hp power up
 

wrote:
I thought modifying outboard motors for more power for non-racing use is
now prohibited, at least as of some model year like 2000. Is that not
true?


I live on the other side of the world .. in Australia. I don't know of
any laws like that hear and the motor will still have all the signage
of a 115Hp.

Lucky you. Check the bass and walleye boats website.
http://www.bwbmag.com/
go to performance section for some information.

Or use search to find other articles that might be interesting like
http://www.bwbmag.com/output.cfm?ID=942967

--
Del Cecchi
"This post is my own and doesn’t necessarily represent IBM’s positions,
strategies or opinions.”

Yamaha 115hp power up
 

Thanks everyone for the info. I will see what I can do to get boost
out of the little engine.