'89 Evinrude 70 hp, maybe

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Grumps

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Oct 14, 2022
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Location
Victoria, TX
I recently purchased what is supposed to be an '89 Evinrude 70 hp, rebuilt of course. Problem is, all serial number stickers are gone and I am not sure what it really is. The cyl head number is 329835 which comes back to a 91-92 60/70 hp 3cyl. The block number is 334474 but I have not been able to match that to anything. Anyone know where to point me?
 
I guess those numbers are off the freeze plugs. If the carb throat diameter is different between the 60/70 you might be able to use that as an indicator.
 
No clue as to the model and the motor was repainted after it was rebuilt. Just trying to get ideas from the component part numbers.
I knew what I was getting into and rolled the dice anyway. Just trying to solve the puzzles.
 
Well, OMC changed the transom brackets and trim system around 1986 - 1988 or so. You can look up those parts and that should give you a ballpark idea.
Basically that engine was a mature engine platform anyway and there are millions of parts out there for them that will fit. The cylinder and crankcase changed around 1987 or so as well. Went from a 49 cu. in. block to a 56. Another way to look it up.
 
INTRODUCES... The S stands for 0, and you are looking at the last two or three numbers in the model number.

Using E70TLETR for instance, the ET stands for E=9, T=3, so 1993. The 3rd letter tells you which factory made the motor.

Often there is a stamp on a aluminum plug that tells you what the model number is up on the top of the block somewhere. The other plug is the one you found. Keep looking, but if you can't find it, don't worry, you have enough info.

GREAT motors, by the way, especially once you get into the 1990's forward.
 

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