18HP twin cylinder into a narrow frame?
 

Im sure this has been tried if not done, but I am starting to install a loader onto my 123 and my buddy has an 1810 he started it for me and wow how smooth that twin is...

how hard would it be to fit one of those engines into a 123?

With a Cutting Torch, metal, a Welder, fabrication, and some tools, I see no problem.

Anything is do-able, but sometimes common sense is a better choice.:bigthink:

You left out skill.

haha. I got ALL that...

smoother and much more HP... I also like the Onan P series engines too...


so... has this been done?

Common sense says why reinvent the wheel?
Time one hacks the sides of the frame down to clear the cylinders and weakens/ ruins it then scabs on reinforcing plates and what all else needs to be done if one expects to have a hood/side panels,
it is so much easier to just start with a spread frame, designed to bolt in an opposed twin.
And hanging a loader on a Garden tractor is borderline abuse, but many people do it, but are careful understanding a GT was not designed for loader or a back hoe so caution is exercised during usage.
Hell, you can set a small block Chebbie in front, and it would be a conversation piece, but the usability is diminished hugely.
We all dream, and that is how things get built but some thought/experience must go into the project.
Just my .02 cents, no offence meant to anyone. :bigthink:

why would I have to cut into the frame, cant the opposed horizontal twin sit on top of the frame rails? then make an adapter to the hydro drive shaft...

??

As an educated guess, I would venture to say the drive line geometry would be off.

Not worried about driveline geometry. I can make a little drive shaft with a little universal joint at each had no problem.

The other option is to put a pulley on the engine and another one on the drive shaft with a pillow block bearing for support.

I'd rather do that than alter the frame.

I was so impressed with the smoothness of that engine on the 1810... I read up on those engines and they're good but I did read that the Onan P series engines might be even a little bit better especially since they have more torque down low.

Here, watch this... If you have any questions ask him he is very helpful.

https://www.youtube.com/watch?v=GhcgbeXIj94