RD-18-E Year please?

[Mas]

Hi,

I picked up an parts motor today. I believe it's 55 or 56 35HP Johnson...can anyone confirm?

Serial number 1393862.

Thanks,

Mas

 

[1946Zephyr]

Re: RD-18-E Year please?

RD-18 is a 1956 30hp

 

[Mas]

Re: RD-18-E Year please?

Thanks Zephyr...you're fast!

Is the powerhead the same as the 35...just different carbs? Or is it a smaller piston with a different crank?

Mas

 

[1946Zephyr]

Re: RD-18-E Year please?

The 30 is 35.7 cubes and the 35 is 40.5 cubes. The 35 also has the compression relief heads, where as the 30's don't. But, a 35 powerhead will bolt on where a 30 was, as long as it does not have a thermostat set up. The carbs may possibly be different but not by much. Then again I think the 30 may have the sediment bowl integrated with the carb and the 35 does not, so I'm not positive on the carb thing.

 

[Mas]

Re: RD-18-E Year please?

So...different pistons and possibly the same crank?

Mas

 

[1946Zephyr]

Re: RD-18-E Year please?

I am not sure about the crank. You might ask F_R about that one, unless you pull it down and match them up yourself. If the journals all measure out the same, then I can't see why they wouldn't interchange.

 

[Mas]

Re: RD-18-E Year please?

I'm mostly interested in the motor for things besides the powerhead. But if the crank is the same, I might consider keeping the powerhead. Otherwise, I'll probably sell it off to someone in need. I'm curious about its compression...it might be good!

Mas