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I am rebuilding my 1982 case . The onan B43m engine is smoking a bit. I would like to get it rebuilt if possible hopefully in Ontario some where . I am hoping some members from Ontario could recommend a machine shop to do that and a parts source . I also have a rebuilt kohler magnum m18 that I could use instead . I would need the hydraulic bracket and a adapter for the pto to attach the stub shaft to flywheel To use the Ezze clutch. Would these parts from a Kohler 321 fit the magnum. Looking for suggestions , part numbers to figure out what direction to go ?
thanks .
 

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TDC Engines in Kingston is familiar with Onans. This is where I had a CCKA machined. I stripped the engine and took it there along with the manual. After measurement I was given a list of what needed to be replaced. Boomer's Influence supplied parts and talked me through the process with a wealth of information.

The B43 in the older Cases didn't have an oil filter so some will take this as an opportunity to try to find a block with a filter adapter.

I think Engine Bore in Toronto may also do this kind of work, but the focus there seems to be on Kohlers.
 

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Are Kohler Magnum's good engines? My JD317 has a Kohler Series 1 engine, and I think JD went to Onan on the 318 because of failures; but I think the Magnum's are different engines. Thoughts?
 

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Are Kohler Magnum's good engines? My JD317 has a Kohler Series 1 engine, and I think JD went to Onan on the 318 because of failures; but I think the Magnum's are different engines. Thoughts?
As I understand it the original KT series were a splash oil system. The KT Series 2 was a semi pressurized oil system without a filter. The Magnums are basically the same engine but with a oil filter.

This fall I had a KT Series 2 (1984) finally give up. In 2015 Dad had his 1980 KT (series 1) refreshed, .010 over. Not sure why he did it as there was no smoke or knocking.

Cheers,
Gordy
 

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If you are going with the Onan, contact Boomer to make sure the oversize pistons you need are available. Also most engine shops usually want the new pistons :"in hand' and measure and hone the cylinder accordingly.
 
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