2072 factory Onan repower

RYoung913 · #1 05-01-2019, 08:56 PM

I plan to repower my early build Onan 2072, it has 1000 hours on it and is still running but has its minor issues. Id like to preserve it by replacing it now rather then letting it self destruct.

I contacted SEW about what the correct repower kit would be for this configuration. They were no help since there is no literature about the Onan B48G ever existing in a 2072. Their words not mine.

I am leaning towards ordering the repower for a cub cadet 982 since it is basically a 2072 with the Onan and no power steering.
Any input from guys more experienced then me would be much appreciated.

Thanks in advance.

CubDieselFan · #2 05-01-2019, 09:37 PM

You could use a repower kit for a 1872 and use an extreme clutch.

R Bedell · #3 05-02-2019, 06:25 AM

You could re-power with a Kohler M-20 that was mainly used in the 2072's.

ol'George · #4 05-02-2019, 07:15 AM

Or the more popular M-18, but they are both old skool, that some feel are outdated.
They both would be a bolt in, and you would not be displeased with the results.
Then again the old onan in there is a good ol'horse also.

Oak · #5 05-02-2019, 07:41 AM

It took 30 years to put 1000 hours on the Onan and it should last at least another 1000+ hours. Onans are great motors and put out a lot of power. Why not repair the minor issues with it? What problems are you having with it?

RYoung913 · #6 05-02-2019, 07:47 AM

I do really like the onan but it is starting to show its age. Ive been chasing oil leaks for the past 100 hours and its getting old at this point.
I would prefer to repower with something that is brand new and the 23hp brigs seems to be the most popular from what I see here. No one has mentioned this option yet.

Oak · #7 05-02-2019, 09:11 AM

Zippy put a 23 Vanguard in his 1872 and loves it. I’ll see if I can find the link. Are you going to sell the Onan?

RYoung913 · #8 05-02-2019, 10:00 AM

Quote:

Originally Posted by Oak

Zippy put a 23 Vanguard in his 1872 and loves it. I’ll see if I can find the link. Are you going to sell the Onan?

I believe ive seen the post on it. My real question is what should I order the repower kit for? Im guessing a 982 since it also is originally fitted with the onan. 1872 and 2072 both only have literature stating they came with the kohler. Not sure how much of a difference there is between repower kits but sew has them listed as different kit numbers.
I dont have any plans of selling the onan at the moment.

CubDieselFan · #9 05-02-2019, 07:55 PM

Mechanically the 982 kit would work, I think. I do not any of those models to look at. Post a picture of your electrical connector for the engine and maybe some of our 982 owners can see if theirs are the same.

farmall fred · #10 05-04-2019, 09:36 AM

I have repowered three of my Cub Cadets with Kohler Command engines. Easiest way it to buy a complete tractor with the engine you desire and then do the swap. The parts tractor would have parts needed to complete the swap. Only issue is getting an engine that is not clapped out.
As you know the Briggs conversion package is $1,650.00 plus shipping. I think I would check into getting your Onan rebuilt using new pistons & rings new rod and main bearings along with a cyl bore job and a crank polish or turn undersize as needed. Add new valve guides and valves if needed and it would be good for another 30 years. Onan parts are costly but they can be found. Check for any local area machine shops to see what it would cost. You may not save any money but your tractor would stay all original and every thing would still match up.
Good luck on what ever direction you decide to take.