982 Repowered with CH23

BIGMOZEKE · #1 06-29-2014, 06:54 AM

Hello Everyone,
Well, with much help from Sam Mac, I got the Command in the 982 running and was able to take it for a drive today, for the first time in over 2 years. With all of the delays here at home and work, it was nice to get out there and work on that thing today without any interuptions.
Had a 23 hp motor rebuilt and it runs really good, hardly turn the key and it will start.
Did the Sam Mac driveline modifications to the beast.
Still need to get the right muffler, heat shield assembly and to work out and something between the motor and the firewall to seal it all up nice so that debris doesn't get in there. Got a new screen cover but it did not fit, even after changing out the fan, cannot find what kind of screen goes over that thing.
I had done some looking to find out why I needed those spacers under the motor, I did put them in there, but the motor is too high and you have to take the firewall, tank moun loose to remove the air cleaner. I did look up the center height on the Onan motors and it appears that the Onans were not as high as the Kohlers with the spacers, so I may have to remove them. But will check on that later.
This thing is running just great, would like to have driven it around a little more than I did, but I am afraid of it overheating without all of the necessary shields and screens in place etc.
May order one of these mufflers here to use: http://www.ebay.com/itm/Kohler-Muffl...item19ec53dcd5

Joe

mickb72 · #2 06-29-2014, 09:25 AM

Hi Joe looks good. I just sat a 18 in a 682 on spacers, getting ready to check drive shaft alignment now. Looks like i'll have to cut out the back of the air cleaner cover to use it. ? Was your crankshaft a 1/2" short for that pto? Mine is, i guess i'll get a spacer to make it flush. Motor came out of a 2185. Thanks Mike Ps just looked at that muffler, i'm looking too. The outlet is in the center, i guess that would work. The one for the 1864 (751-3110) comes out the right side. They want 238$ + for that one and i don't want to spend that much.

BIGMOZEKE · #3 06-29-2014, 10:39 AM

Hey Mick, yes the crankshaft was too short, so I did put a spacer in there. And yes, the price on that cub muffler is just ridiculous. Coming out of the cener for the muffler should not be a problem at all.

If I get time tonight, I am going to look at the shaft height center on the original Onan compared to the Command, I am suspecting that the spacers are too high.

Will not be able to cut grass with it until I can get the muffler heat shields and firewall seal squared away..

Also, may have to put a diode inline for the PTO, but I will ask Sam about that.

ACecil · #4 06-29-2014, 11:01 AM

Great job, Joe! Glad you got the 982 going!

Cubcrazy · #5 06-29-2014, 11:49 AM

Looks great Joe!

BIGMOZEKE · #6 06-29-2014, 08:08 PM

Thanks guys.

That motor is so quiet, can't wait to cut grass with that thing.

Sam Mac · #7 06-29-2014, 08:31 PM

Joe

The PTO should not have anything to do with the engine swap.

mickb72 · #8 06-30-2014, 09:01 AM

Quote:

Originally Posted by BIGMOZEKE

Thanks guys.

That motor is so quiet, can't wait to cut grass with that thing.

Hi Joe , the center line on the kt is the same as the ch, so i used the kt spacers. I'am curious about the onan. Those motors set on a tilt in the 82's. Someone had said that the rears are tilted up.I'am going to put a diode in the kill wire and may give it it's own toggle switch, i don't trust ing switchs. I built a 25 puller before i knew anything. I bolted the motor to the plate and spaced up the plate.(fun) For a puller i do like the idea of no spacers between the motor and the plate. I also made a bracket bolted to the front of motor to the plate for a third set of attachments and to reduce twist. This one wasn't quiet, sounded wonderful with a 2 into 1 11/8" tube. Mike

BIGMOZEKE · #9 06-30-2014, 08:57 PM

Hey Mike, I could not find the manual for the ONAN to see what the dimensions are for the center height to the shaft, but when I removed the motor, I did not remember removing any spacers. It all looks okay, just sitting a little high for the air cleaner.

Hey Sam, I was referring to putting a diode inline with either the fuel cut off solenoid or the PTO, not sure if either is required or necessary, just something that I knew that some on here have been cautioned about before, to not forget to do that. I just wasn't taking it for granted that I don't have to look at that before I hook anything up and fry up something that I would regret.

BIGMOZEKE · #10 06-30-2014, 09:24 PM

Just confirmed what I was hoping not to find.
The shims are needed to match the spec. The spec height for the ONAN 19.9 to the center of the crankshaft is 6.59 the Command is 6.125 and the shims/spacers are .470......looks like I will be cutting out the back of the firewall by the gas tank to get the air cleaner off when I need to. The attached file show the dims, B48M and B48G blocks are the same.