1978 OMC Stringer Gear Ratio??

[ryan_eyres]

Hi all,

I'm in the process of rebuilding/resealing an OMC Stringer outdrive. I bought a 1978 Reinell that came with a 120hp OMC Stringer (Hydromechanical shift) engine and outdrive. It also came with a spare upper and lower unit (also hydromechanical shift).

I have disassembled the spare leg and repainted it with the imron system. Before I go about reassembling this unit, I would like to double check that I've got the correct gear ratio for the 140hp 3.0L 4Cyl engine that I am installing in the boat. I understand the stringer outdrives were offered on the I6 and V8 engines as well, and I just want to make sure that this upper and lower unit were from a 4cyl and not the 6 or 8 because I believe the gear ratios would be different.

Anyone know a quick way I can check?

Thanks in advance,

-Ryan

 

[fabrimacator21]

Re: 1978 OMC Stringer Gear Ratio??

You should be able to find it in one of these....

Thanks to KRH1326 for these manuals.


Here is a link that leads to downloadable OMC repair manuals and wiring diagrams.
http://forums.iboats.com/showthread.php?t=309093

Here are links that leads to an exploded views of clutches, worm gear, etc.
http://www.crowleymarine.com/brp_par...rams/33679.cfm

http://www.dougrussell.com/partscata...3395,3396,3397