1958 or 1966 18hp thermostat

[CherokeeJohn]

I recently bought what I thought was a 1966 Evinrude 18hp model 18602 but the freeze plug says it is a 1958 model 15024 seems someone did a motor swap years ago. Anyway I can not find the thermostat housing on this motor. The parts diagram shows it on top of the head but mine just has a freeze plug. Any help would be greatly appreciated. Inclosed a picture of the head on my motor.

 

[racerone]

No thermostat on 58 models.-----Thermostats came out in the 59 model year.

 

[CherokeeJohn]

Thanks was thinking I lost my mind. I may have buying this thing.

 

[cc67]

Someone added a fuel pump also. 58s had dual line pressure tanks.

 

[CherokeeJohn]

It seems I have a real Frankenstein motor.58 block, 66 fuel pump, carburetor and God only knows what else. Good thing parts are pretty much interchangeable. Now I have to shorten the fast idle adjusting jet since it seems everything is a bit closer to the front and also make a backing plate for the kill switch since this is definitely aftermarket. Any suggestions on what to use as a air filter??

 

[GA_Boater]

Outboards don't use or need air filters because it isn't dusty on the water. Some have some intake baffling for noise reduction.

Welcome aboard.

 

[cc67]

It seems I have a real Frankenstein motor.58 block, 66 fuel pump, carburetor and God only knows what else. Good thing parts are pretty much interchangeable. Now I have to shorten the fast idle adjusting jet since it seems everything is a bit closer to the front and also make a backing plate for the kill switch since this is definitely aftermarket. Any suggestions on what to use as a air filter??

No air filter. Basically just a sound deadening air chamber.

 

[CherokeeJohn]

Ok, that just sounds weird, but I will take yall's word on it. Took some flashing metal and drilled holes in it to match the carb cover just to slow down the dirt daubers. You would not believe how fast they can build a dirt tube.