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Old 28 May 2015, 12:12   #1
Country: UK - England
Town: london
Boat name: bigrib
Make: unknown
Length: 6m +
Join Date: Aug 2010
Posts: 38
Mariner 40 power increase ?

Hi, I have a mariner 40 twin/ twin carb early nineties(I think) 2 stroke
S/s... I'm not a boy racer, I did however wonder if there are any simple restricting factors that can be removed .. Would just like a bit more power from it as a heavier 50hp engine is out of the question ... Is there anyone here in the know?
I'm sure as these are a very common engine some people on here may have some info? Thanks in advance . :-) Jim

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Old 28 May 2015, 13:47   #2
Landlockedpirate's Avatar
Country: UK - England
Town: St Helens
Boat name: Wine Down
Make: Maxum
Length: 8m +
Engine: Inboard
Join Date: Apr 2012
Posts: 934
Im pretty sure that was the maximum output for the twin cylinder engine/block. You will need to go to a triple to get more power, and as you have realised, they are a lot heavier.
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