johnson 25hp lower unit compatibility

ekrekel

Recruit
Joined
Dec 9, 2007
Messages
4
Lower unit got trashed and the case broke.What other horse power motors will be compatible with a 25 hp johnson?
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,195
Re: johnson 25hp lower unit compatibility

What year do you have? Is it thru-propeller hub exhaust or not? The non-thru hubs go way back into the 1950's, 18-20-25hp. If it's similar in size it will work.....Unless I am missing something concerning the newest ones.
 

Harker

Chief Petty Officer
Joined
Sep 21, 2003
Messages
452
Re: johnson 25hp lower unit compatibility

I just put a 1988 20hp lower on my mid 90's 35. Both are 2 cylinder.
 

wbeaton

Commander
Joined
Jul 30, 2006
Messages
2,332
Re: johnson 25hp lower unit compatibility

Yup, you have to tell us the year. The 25 hp switched to thru-hub exhaust in 1985 (I believe). Any 20-35 hp with thru-hub exhaust from the mid 1980's (1978 for the 35 hp) into the 1990's should work.
 

ekrekel

Recruit
Joined
Dec 9, 2007
Messages
4
Re: johnson 25hp lower unit compatibility

Yup, you have to tell us the year. The 25 hp switched to thru-hub exhaust in 1985 (I believe). Any 20-35 hp with thru-hub exhaust from the mid 1980's (1978 for the 35 hp) into the 1990's should work.
it is a 1989:):)
 
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