1988 OMC 5.0 swapping with 1984 OMC 5.0

BTyree

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I have a 1988 OMC 5.0 engine and I'm swapping it for 1984 OMC 5.0. I realized they changed the engine coupling in 1986. I'm wondering if there is a engine coupling that would connect my 1984 motor with my 1988 outdrive shaft?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Probably not. OMC also changed the drives from stringer to cobra at same time.

Why not find a 1986 or newer motor to make your life easier
 

Bondo

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I realized they changed the engine coupling in 1986. I'm wondering if there is a engine coupling that would connect my 1984 motor with my 1988 outdrive shaft?

Ayuh,..... Sierra makes a conversion couple, that's listed in iboats megamall,.....

Hit the parts links at the top of this page, 'n search it out,...
I ain't got time at the moment,....
 

Bondo

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Ok,... I was wrong, the retro coupler goes the other way, newer motor to older drive,....

Best I can figure, yer gonna have to use the Merc donut coupler for the 2 pc. rear seal motor,.... 18-2171,...
OMC came out with the Cobra the same time GM went to the 1 pc. seal, so there's no Cobra coupler for an older motor,...
 

Scott Danforth

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I say find a 1986 or newer motor
 
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