Since I can't leave well enough alone my d750 has almost 6k on it what's the biggest engine do u guys think I can stuff in there
NIW,I just put in a D950 in mine. Used one out of a Jacobson/Textron 21.5 HP.
A real boost over the 16HP of the D750.
You will need to change the fittings and the hoses to the radiator ,most D950's use a water pump).
Try to get a complete motor with the alternator and alternator brackets if you can, as they don't use the dynamo when it has a water pump. I just altered mine and put a Chevy alternator on it, you can get the stock alternator to work on it, you will just need to alter the wiring or get a wiring harness for it.
Mounting bolts and bell hosing bolt holes are the same.
I used the flywheel and clutch off of my D750 because they were new.
If it came out of something that didn't use a clutch get a pilot bushing for it or you will destroy the throw out bearing and possibly the clutch input shaft.
I did the mod in a quick hurry as it's a super simple swap.NIW,
I was reading about something you posted about a engine upgrade, then u ran off with some hijacker,.. And left the thread stumped, Iam confused with your post,..did it ever happen and where did the story play out?. I waz searching engine mods and after your op it went south. That sucked,..cuz the last thing I wanted to read about waz somebody hanging a loader frame on a tractor,.