Gcabinet1 Posted October 12, 2018 Share Posted October 12, 2018 Starting to think about restoring my 4041 the onan Cckb runs ok but blows some blue and the compression is only 90 pounds each side. anyone rebuild recently ? What do you think it would cost? carb is new ,muffler is ok ( not great) i am guessing I would need gaskets, over size Pistons , rings boreing out the cylinders Do I need new connecting rods ? bearings not sure what else? i see that small engine warehouse would be about $1900 with shipping for a new 23hp with conversation kit what are your thoughts what is your experience thanks for you help Gary Quote Link to comment Share on other sites More sharing options...
Gcabinet1 Posted October 12, 2018 Author Share Posted October 12, 2018 Oh yah I forgot the valves!! Quote Link to comment Share on other sites More sharing options...
Alltractoredup Posted October 12, 2018 Share Posted October 12, 2018 I am pretty sure to rebuild the Onan would cost more than to repower with a brand new Kohler Commad with higher horsepower. Onan's are ridiculously expensive to rebuild. If you want to keep it original, than be prepared to spend some money. I would look into either a Kohler Command 25 HP or if you want to stay cheaper, look into a Harbor Freight 20HP engine that sell for around $800. There are other members who have more experience on these Onan's that will comment Quote Link to comment Share on other sites More sharing options...
equipment guy Posted October 16, 2018 Share Posted October 16, 2018 I hunted down a decent running used Onan from a power max, tuned it up, and installed it. In my spare time, I have been hunting down reasonably priced parts to rebuild my original engine. Used engine has a little better than 105 psi compression, and has been running great for the last year and a half. I figure in the end, I will be into a rebuilt engine, and a good spare, for about 1500.00. I use this tractor almost daily, for numorous chores, and prefer the fit function, and weight of the Onan. Quote Link to comment Share on other sites More sharing options...
Gcabinet1 Posted October 16, 2018 Author Share Posted October 16, 2018 Are any of the CCKB parts available from other sources other then from onan ? Quote Link to comment Share on other sites More sharing options...
Kenh Posted October 17, 2018 Share Posted October 17, 2018 I rebuilt the Onan NHC in my skid steer. The money I spent would have went a LONG ways to a new Kohler repower. Ken Quote Link to comment Share on other sites More sharing options...
720nut Posted October 17, 2018 Share Posted October 17, 2018 Check your engine before you start buying new parts. Not all engines need new pistons , rods and so on . if everything checks out ok you may only need rings , gaskets and the valve reground. only reason I see for complete rebuild would be a total restore. I rebuilt a CCKB couple years ago and cost me $300, rings, gaskets and rod bearings, mains were unavailable at time. Just my $.02 Quote Link to comment Share on other sites More sharing options...
s_stephen Posted October 17, 2018 Share Posted October 17, 2018 I agree with lloyd see what you have to work with first with the onan. A kohler command 25 will not fit with out trimming the hood and you wont be able to use rear pto because of the phisical size of the engine it has to sit high enough to clear frame and jackshaft for hydro drive. this puts the crank shaft around a inch higher than the onan and unable to use rear pto shaft. this is what i had to work around when i put a command in a 620 a few years ago. the briggs kit from small engine warehouse is the way to go if you want a new engine. they are cheeper to maintain and eazy to get parts for unlike the onan. Quote Link to comment Share on other sites More sharing options...
Gcabinet1 Posted October 18, 2018 Author Share Posted October 18, 2018 thanks guys,when i start I will pull mine apart and see whats going on! Quote Link to comment Share on other sites More sharing options...
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