Home › Forum › Ask A Member › 80’s/90’s 50hp opinions? › Re: 80’s/90’s 50hp opinions?
So I have to ask, what is the major difference in the 40/50hp motors? I was looking at the parts diagrams and see the cylinder heads are different (the 25 & 50’s seem to have the same ones), and the crank case is listed as different part #’s for the 40 & 50, but the cranks, rods, and pistons are all the same. I’m sure the carbs have difference high speed orifices, but I’m not seeing much other than the usual.
I’m hoping T2stroke can shed some light on this one, as I know part #’s may only represent a color change, nothing physical. I ask, because I recently picked up a nice early 90’s 40hp and parts motor ’86 50hp, and am wondering if it’s possible to convert to a 50hp.
At the very least, the 50hp has what appears to be a good, complete powerhead…am potentially considering a swap out of powerheads if the 40 can’t be converted via cylinder heads and carbs..