Need Help Identifying Counter Rotating Lower Unit

[Greg_E]

I'm finally getting around to cleaning up a lower unit that I salvaged from a 1991 Evinrude 200HP that was headed to the scrap yard.
It looks pretty much identical to the lower unit on my 1988 225 CR with a couple minor differences.
The intake screens are external which appears to be a change made in 1993.
Also there are two mounting holes drilled in the lip just below the mating surface near the front. I saw one for sale on Ebay that looked just like it and was described as a FICHT lower unit.
Also the thrust washer is much thicker than the ones I use on my 1988. That may be for a 4 blade prop or a design change to the 3 blade props on newer engines. At a quick look it appears that I can use my old thrust washer and prop and it will bolt right up to my engine.
Am I missing anything? Any other differences that would prevent me for using this?

 

[racerone]

The 2 wee holes near the front are for an anode perhaps !

 

[Faztbullet]

Shift unit into forward then turn the driveshaft CW and see if prop goes CCW. Also measure the DS height as the pre 90's motors crankshaft is longer and requires a shorter shaft.

 

[Greg_E]

I measured the shaft length from the casting to the top of the driveshaft. 26 3/4" . That is the same on my 1988 CR lower unit. With the shift rod pulled up and the driveshaft turned CW the prop shaft turns CCW on both units. You can't see it in the picture, but it also it has the two bolts that retain the carrier bearing same as my 1988 CR unit.
On the standard rotation unit the prop shaft turns CW when the driveshaft is turned CW. Fore some reason the driveshaft on the standard rotation unit is about 1/8" longer.

I don't know what those two holes are for. I don't think they are for an anode. I doubt they would attach an anode to such a thin piece of metal, but I've been wrong before.

 

[racerone]

The 2 wee holes at the front are for mounting an anode !

 

[Greg_E]

The 2 wee holes at the front are for mounting an anode !

Ok then. When you said "perhaps" I thought you might be guessing. I went back and took a closer look at the parts catalog and the the bolt that I thought went in the two small holes shown in the picture was the front LU to midsection mounting bolt. The small holes shown in the picture are not found on any drawing that I looked at. I have been unable to find anything showing those two holes are a modification on a particular model year. I edited my original post and deleted the incorrect information. I looked at the various zincs for Evinrude outboards and I didn't see one that would bolt up to those holes. Could those holes be for mounting one of those aftermarket Doel- fins that used to be popular?
It certainly wasn't the unit that came on the 1991 originally. So far I haven't found anything that would keep me from bolting it up to my 1988. It was running on the 1991 and there weren't many difference from '88-'91

 

[boobie]

Check the end of the prop shaft and see if it has a CR stamped in it. If it does it's a counter-rotator.