UB Special gas engine

Baelee05

Member
What engine does a UB Special gas have? Is it the 283 or something else? Are there other engines that will bolt up with no modifications? I have been wanting a Special gas for some time and havent had much luck finding one. I have a line on one with a locked up engine and wondered if it would be easy to find a used running engine for it?
 
Should be the 283 cid. Lots of them us around so should not be too hard to find an engine.
 
U or UB special has different oil pan and oil pump /filter setup. Top end is common to others. Thinking crankcase also different as oil filter internal
 
Both posters below make good points. If you want it to look pretty original you need a later model engine. I am not sure how much difference there is in between a 5 star engine and a UBspecial engine, but I am sure it would look closer to original than a gas engine from a plain 'U' for example.

The older engines will probably bolt in to the transmission and work with the exception that the hydraulic pump won't bolt to a lot of the older front covers because there is no place for it. (I am thinking that on a UBspecial it should mount below the water pump, not behind it.) There may also be an issue with the water return manifold not aligning with the radiator inlet.

If your tractor doesn't have power steering and if you just want something to ride around and show, I am thinking a lot of the older U 283 engines could be made to work.
 
I am in north central Illinois. You have three Specials for sale? I would be interested in one of the gassers depending on condition.
 
I know what a U is as I had one and alsu what a UB is but what is a UBspecial? what makes it a special?
 
Specials have flat front grill like a G. Different front bolster to allow for power steering. Hood has removable side panels. Made in gas diesel and lp. Also was a UTS version of the three.
 
Here is a picture of one (not mine--found this on the net).

mvphoto107489.jpg
 
We are about 175 miles east of Dubuque. Best to call later evenings. I'm in my mid 80's and need to start selling tractors. I'll be honest, i'm slow about selling,the LPG was my tractor rider for 20+ years. 6414250500.
 
I have a gas UB Special with a 283-C4 engine, all my Us have 283-A4 engines. Same UT100D transaxle. The oil pump filter and pan is similar to the 336 but a little dhifferent.
 

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