force power head swap

bobob

Recruit
Joined
Apr 11, 2012
Messages
3
I have a 1990 120 force with a bad piston and also have a 1989 125 force power head. can I just swap the power head over to the 120 force motor?
 

bobob

Recruit
Joined
Apr 11, 2012
Messages
3
Re: force power head swap

Ok thanks.. I only have the power head off the 89 125, but I have the complete 120 so I only have the 120 shafts and parts.. Just not sure what I needed I was told those 2 years are perfect change over?
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: force power head swap

1990 was before Mercury changed the drive shaft splines. The 125 will swap right in with no problems. You won't need anything if the match plate and exhaust down tube are still on the 125. If they are not, you will need a gasket for the match plate to block. And yeah, you will need some silicone RTV to seal the match plate to the midleg.
 
Top