Need Help Identifying an OMC Lower Unit

[tycooper]

Hi, I was hoping someone could help me identify this OMC lower unit. I cannot a part number or casting number on it anywhere. I know its a good unit because my dad took it off the outboard to put a jet drive on it, but I just can't recall what HP or year the motor was. It is a dark gunmetal gray.

 

[Faztbullet]

Thats a Yamaha lower unit

 

[racerone]

I have to agree with it being a Yamaha unit.----Looks to be 30 hp.----But could be 40 / 50 as well.

 

[Faztbullet]

Looks like a Yammy 60

 

[Nordin]

I have a 50Hp 1989 Yamaha and this unit is very similar to the unit on the yamaha.
I think OMC never use that bearing housing with a washer with tabs and a nut.
Mercury and Force had that design.
It is a Yamaha LU, difficult to see if is is 40, 50, 60 or 70Hp.
Maybe a 90Hp?

 

[tycooper]

OK, Thank You all for your help.