In 1932, a four-cylinder production outboard engine making that much power was state-of-the-art in marine technology. Just as interesting to me is their Propello-Vacuum cooling system, which utilized hollow cavities in the propeller to create suction that pulled water into the lower unit and through the engine for cooling. Not counting the propeller, the system had no moving parts. But of course, this system could only function on an engine that had no neutral or reverse gearshift. Once again, keeping in mind that this was almost 90 years ago, options such as a pressurized fuel primer and compression relief for easier starting were impressive on a consumer product.
The catalog includes many small details about performance, racing, records, and oddities such as the fun of playing water polo with powerboats! There's a lot there to I hope you enjoy it. An original price sheet is also present.
1986 Johnson 70HP trim unit interchange ?
Thread Starter: Carter PowellI have an older friend that has a 1986 Johnson 70Hp three cylinder that does not have power trim. Can another trim unit from another OMC unit be added
Last Post By: skialot2 Yesterday, 11:59 PM