5.5 hp motor swap

[cougar1985]

hey guys im wondering if if a motor swap is possible?what i have is a mint 1956 5.5 johnson,that was run with straight gas and was blown (not me i bought it like that).i have a 1963 5.5 johnson that runs great but is as ugly as sin.can i swap powerheads here?

 

[F_R]

Re: 5.5 hp motor swap

Not real sure without looking. The '63 has a thermostat, and might have a slightly modified powerhead-to-exhaust housing. Maybe somebody else can comment on this.
Also, the '63 has a fuel pump instead of pressure tank, which will have to be dealt with. You might prefer the fuel pump anyway?

 

[cougar1985]

Re: 5.5 hp motor swap

yes fuel pump prefered was just wondering if complete powereheads can be swaped.

 

[Chinewalker]

Re: 5.5 hp motor swap

The '56 has ears on the cylinder head that hold the rear cowling in place - '63 lacks the ears. Also, the thermostat on the '63 head may interfere with the cowling of the '56. Most everything else is "close enough"....
- Scott