Lower Unit Compatability

[psyc0tic1]

I have a 1989 Mercury 115 hp 4-cylinder 2-stroke (0C100574).

I have an opportunity to purchase a complete 2000 Mercury 125 up 4-cylinder 2-stroke (0T051775) for cheap. (Motor no good, lots of good parts)

My questions are:
1) Will the lower unit on the 2000 direct bolt on my 1989? (This is the most important question)
2) Will the oil injection pump and tank/lines direct bolt on my 1989?

 

[jimmbo]

First serial number took me to a Parts listing for a 25" Shaft
The Second Serial number took me to a listing for a 4 cylinder Jet...

 

[psyc0tic1]

First serial number took me to a Parts listing for a 25" Shaft
The Second Serial number took me to a listing for a 4 cylinder Jet...

The first serial number can be found here:

100 (4 CYL.) - 0A722297 THRU 0D283221

100 (4 CYL.) - 0A722297 THRU 0D283221

www.mercruiserparts.com

The second serial number can be found here:

80 JET - 0G760300 THRU 0T979999

80 JET - 0G760300 THRU 0T979999

www.mercruiserparts.com

I saw the motor and have a pic of the serial... It isnt a jet. The drive shafts have the same part number

 

[jimmbo]

Yet, even your second link there states "80 Jet"

Well since you have your links, you can look up all the Parts #s to check Compatibility

 

[psyc0tic1]

Yet, even your second link there states "80 Jet"

Well since you have your links, you can look up all the Parts #s to check Compatibility

Why did you bother replying? I am asking for experienced help... If you lack the experience... don't reply thank you

 

[jimmbo]

Why did you bother replying? I am asking for experienced help... If you lack the experience... don't reply thank you

You knew how/where to look, but were just too Lazy and wanted someone else to do it for you.

 

[psyc0tic1]

You knew how/where to look, but were just too Lazy and wanted someone else to do it for you.

Wrong... I looked but while there are some part numbers the same... Not all are and NONE of these diagrams have the dimensions etc so dude... go away and let adults talk here

 

[jimmbo]

Wrong... I looked but while there are some part numbers the same... Not all are and NONE of these diagrams have the dimensions etc so dude... go away and let adults talk here

Well, you certainly won't be participating in that Conversation/Discussion

 

[flyingscott]

let me make this simple NO they do not interchange. they also did not make 125 in 89

 

[psyc0tic1]

let me make this simple NO they do not interchange. they also did not make 125 in 89

I never said they made a 125 in 89... The 115 is an 89 and the 125 is a 2000... As stated in the original post.

Does that mean the 2000 125 lower unit will not direct bolt on to the 89 115?

The reason I ask is because I see so many posts on the interweb saying that the lower units from 90 hp to 125 hp are interchangable but I wanted professional opinions

 

[WIMUSKY]

Let's keep it civil fellas.......

 

[psyc0tic1]

Let's keep it civil fellas.......

Thank you for stepping in... I see others asking this same question about other brand motors and they receive all kinds of help from nice people... somehow I am not that lucky

 

[flyingscott]

The shift rod heights are different when they went from a 3 dog jaw to a 6 I believe. It may I'd you have everything off off the donor motor.

 

[psyc0tic1]

The shift rod heights are different when they went from a 3 dog jaw to a 6 I believe. It may I'd you have everything off off the donor motor.

By "everything" do you mean the lower shift rod and the upper too?