What Drives do I have

JeffMendenhall

New Member
Oct 24, 2009
191
Live Germantown- Boat Baltimore
Boat Info
340 Sundancer 2000
Engines
Twin 7.4 Mercs
There are no markings that I can find on my outdrives. How do I tell what outdrives I have? I am in the process of re-doing (scraping, prime and paint) and I need to buy a couple things while I am at it.



Thanks
Jeff
 

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And you missing a zinc that should be just behind the prop, coming down from the cavitation plate.
 
Your drives are definitely Alpha I Gen I


Do you have a pic. of the other drive.


The anti-ventilation


plate in your pic. looks "bowed"
 
Limited experience here, but is it possible that is an Alpha upper with a Pre-Alpha lower?

I ask only because the trailing edge of the cavitation plate (the part thats missing a large segment) seems too rounded, compared to the Alpha's I'm familiar with.

Just wondering...
 
Get some zincs on your trim rams also. There are two types of zincs for the anti-ventilation plate; a small fin and a flat zinc disk that fits in its place (thats the one I use). And as other have stated, Alpha I gen I is what they left the factory with.
 
The Merc manual gives all the clues to tell the difference. But not for one that has been divorced and remaried I don't think (drive not owner).
 

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