Repower again 2+2 yrs & models

1966starcraft18ft

Petty Officer 3rd Class
Thread starter
Joined
Jul 22, 2012
Messages
91
Hey all. So this spring I repowered our 1998 MonArch SunSpa260 pontoon from a 1988 US Marine Force 125 hp to a 1999 Mercury 125 hp. Well, piston in cylinder #1 left the chat through multiple holes in block and intake/reed assembly. So now I’m figuring out another repower.
I didn’t mind the engine except for one thing, the 2+2 part.

Now, I create this post in hopes of learning and helping others wonder my very question.

What model yrs & sizes had the 2+2. The wife & I didn’t care for the harsh engagement of the bottom two cylinders and the shakey idle. I’d like to stay with Mercury just cuz I already have it rigged and controls are kinda spendy in my opinion.
 

racerone

Honorary Supreme Mariner
Joined
Dec 28, 2013
Messages
40,000
All the inline 4 with the 4 carburetors were the 2+2 configuration.---Not the best motor for a pontoon.---Best option in my opinion is an OMC model V-4 of crossflow.----Find one to rebuild and you will have a smooth running motor for 20 seasons.
 
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