Re: Are controls & electronics interchangeable?

[DAN ANDERSON]

I didn’t bring that up to start any controversy. The controls off your 1957 Johnson will not work on later motors. The fuel connector is duel line for pressure tank. The control box could be used for a few years, but nothing considered late model or four stroke. The wiring harness is in the same situation. The first four stroke OMC made was carbureted (9.9/15hp) so it would not be allowed on Lake Tahoe. The next generation were just Suzuki badged Johnsons fuel injected. Not sure where they would fall. Probably not make the cut either.
As far as what they allow today, Lake Tahoe continues to be the battle ground as to who builds the cleanest engine? Both Mercury (DFI & Yamaha 4stroke) have de – tuned slightly to reduce their emissions recently (2016) models. The G2 Etech is the cleanest motor emmisions wise on the market today. 4strokes have a disadvantage in NOX emmisions. US doesn’t measure that right now, but Europe does! They are going to have to have a catalytic converter SOON! I am not in the industry anymore, but this is just what I hear. Rumor is Mercury is dropping the OptiMax for 2018 MY. 2017 will be out about next month so it’s just a year away. Just my opinion, I may be wrong.

Dan in TN