35 hp. OMC Mars motor

[mars motor]

I have a (Military amphibious reconnaissance system) motor and have not been able to find info on it. Please help-Part # AML 35D/ NSN-H2B05-01-267-5047 /serial #-G 03292002. If you can help with year built, or any more info. Thanks

 

[Don S]

Re: 35 hp. OMC Mars motor

95-96 for the year built.

 

[mars motor]

Re: 35 hp. OMC Mars motor

does anyone know a website that I can go to for info on original MARS motor, not IMARS

 

[HighTrim]

Re: 35 hp. OMC Mars motor

MARS...the Military Amphibious Reconnaissance System

The military wanted an outboard that could withstand being under 400' of salt water for 7 days, be pulled to the surface and fired! This is done by tilting it upwards to drain water from the intake and exhaust manifolds, then purge the cylinders by pullling the manual start a few times.

They are actually very similar to the typical 2 stroke 35hp OMC motor. They dont have any special valves or anything to keep water out, just indentations in the side of the pistons to purge water from the cylinders. The powerhead also is shrouded in a sound deadening jacket to shroud engine noise, keeping it stealthy. THey also talked about the ignition system being potted in plastic to keep out moisture, but so are the standard OMC motors, so not sure what they meant about that one.

Sorry that is all I know from a Popular Science article I have.

Would be interested in dunking one 400' in salt water for a week and pulling her up to see if she fires?!?

 

[1946Zephyr]

Re: 35 hp. OMC Mars motor

Oh okay, when I saw MARS, I thought the aliens were sending outboards here from outer space.

Yea, it would be interesting to see if a motor would fire after being under salt water for 7 days, especially after many times of reading "Start it up immediately after it gets submerged, or all the innards will get eaten up with rust"

 

[kodibass]

Re: 35 hp. OMC Mars motor

I actually parted out one of these & have some of the parts, one thing I know is different is the fuel primer system.. I still have it and I think the carburetor, I will post a photo of what I have. cheers

 

[mars motor]

Re: 35 hp. OMC Mars motor

thanks for your response. I had to remove purge valve to install electric start.