How interchangable are parts between a 1987 Foce 50 and a 1991 Force 35

[Evinrude_NooB]

I have a 1987 Force 50, which overheated and I'm trying to replace it with a 1991 Force 35.

What are you thoughts on keeping the Force 50 as a parts motor for the 35?

The power head between the two looks quite different. I'm not sure if the lower unit are compatible.

What do you think?

 

[jerryjerry05]

Re: How interchangable are parts between a 1987 Foce 50 and a 1991 Force 35

The drives are close, the gearing is different. They should swap if needed,then change props to bring the rpm's up or down.
The powerhead is a lot different. The carb and electonics might swap??? The carb will need rejetting.Stator the same.Trigger too.
Save some of the parts.

 

[Evinrude_NooB]

Re: How interchangable are parts between a 1987 Foce 50 and a 1991 Force 35

Thanks, Jerry. Sounds like it might be worth keeping.

 

[jerryjerry05]

Re: How interchangable are parts between a 1987 Foce 50 and a 1991 Force 35

Try looking at the head,It just might be something easy to fix???

 

[Evinrude_NooB]

Re: How interchangable are parts between a 1987 Foce 50 and a 1991 Force 35

No, I think it's a rebuild. Either rings or pistons or both both with rebore.

Engine overheated on WOT. Tried head gasket replacement without luck. Low compression on both cylinders.