lower unit compatability

busted-bayliner

Petty Officer 1st Class
Joined
Jun 6, 2010
Messages
228
is there a lower unit that is interchangable with my 1999 90 hp force motor? brand and hp if its even possible thank guys
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,923
Re: lower unit compatability

Long shaft?Short shaft?
Serial # Model? Any #'s

Usually the gear ratio is different from the 120 to the 90.
It's possible it can be used just have to work on the right prop.
Answer my questions and I'll try for a bigger/better answer.J
 

busted-bayliner

Petty Officer 1st Class
Joined
Jun 6, 2010
Messages
228
Re: lower unit compatability

Long shaft?Short shaft?
Serial # Model? Any #'s

Usually the gear ratio is different from the 120 to the 90.
It's possible it can be used just have to work on the right prop.
Answer my questions and I'll try for a bigger/better answer.J

where can i find the numbers needed isnt merc mariner the same as force????

all i can find is a tag with year an the it says family id or somthing like that

on the tag it say 75hp -90hp
so assumadly 75hp-90hp parts should be the same
 

foodfisher

Captain
Joined
Feb 18, 2009
Messages
3,756
Re: lower unit compatability

Nope, just didn't want you to assume yourself into a wrong purchase.
 
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