Mercury Optimax 75hp -->115hp

[Optimax75]

Hi.

I`ve got a Mercury Optimax 75hp. mod no 1B480857. This was sold new in Norway in 2007.
I`ve been told that this engine can be converted to 115hp by changing the pcm unit and removing the air restrictor.

I need help to choose the correct pcm to do this convertion.

Is this really safe or will i kill the engine ? Where can i buy the correct part(s) ?

I`m also interrested in a smartcraft system to connect my chartplotter Northstar 657 to the engine.
Which parts do i need ?

[service860]

Gear ratio in gear case is different too.

[Optimax75]

I see. ..
Will this stop my project here ?
If everything else is ok, i mean . . .
What will this do then ??

[Markus]

There is a company in Italy that does Optimax PCM mods. I would check with them first. There is a link on my links page. (See below this post)

[Simon]

It works great.

[jonnyspeed]

It works great.

So, if one had say a 90hp 1.5L Opti could it be upgraded to 115hp or the new 125hp? I know the gears are different, but that can be cured with prop selection.

[Simon]

Give me a call and I will go over your options. 760-440-9334

[jonasmalmros]

Have a look on: www.lundinsmarin.se, sweden, eskilstuna,

[Evolution Marine]

the block, comp pump, pcm and fuel pump are also diff. too costly. you would better off selling and buying a 115

[optimax-fl-75]

Hi everyone, just need a 2006 PCM for my 75hp Optimax. Can anyone tell me where i can buy a used one or a new one that i may be able to afford? Thanks very much.