amrguy17
L1 Scorpion - The Great Snowmobile
Posts: 16
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Post by amrguy17 on Jan 13, 2015 5:54:28 GMT -5
I am wondering if I need to resleeve to do an overbore on my Kohler K440-2. I am having no luck on finding out what kind of sleeves. Are they chrome or can I just bore them out and put in new pistons and rings. I did find OEM pistons and rings. Any help would be appreciated. This is my first rebuild.
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stinger4me
L3 The Proven Snowmobile that never lets you down
Posts: 108
Location!: East Central MN
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Post by stinger4me on Jan 13, 2015 12:56:47 GMT -5
If it has "cast iron" cylinders, you just bore them out to the new size. There are no sleeves in them. I am not sure what the tolerances are though. I would have to do some research.
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Post by 75whip on Jan 13, 2015 19:43:08 GMT -5
Before you spend any money on it I would take it to the machine shop that you are going to have bore it and have them look at it for you, and get a quote on rebuilding it. I know nothing on Kohlers but i have heard these older ones can be hard to find parts for. If thats the case put a hirth in if you want a twin. Plenty of hirths out there. and parts for them. My guess is they can just be bored, but i know nothing about them just my opinion on it.
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amrguy17
L1 Scorpion - The Great Snowmobile
Posts: 16
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Post by amrguy17 on Jan 13, 2015 23:06:42 GMT -5
Thanks guys. I have found all the tolerances in a manual. Also found a place in MI called GPI that bought all of Kohlers 2 stroke division. I am talking to a guy locally about the job. Thank you all very much.
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amrguy17
L1 Scorpion - The Great Snowmobile
Posts: 16
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Post by amrguy17 on Nov 29, 2016 23:59:01 GMT -5
Got the engine all done and getting ready to to reinstall in the sled. This will be the first time it ran since 1984. It was my wifes grandfathers. I have to get it done by Jan 14th for the New Market Snomads vintage show so that she can ride it there. The Kohler did not have sleevesBTW.
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stinger4me
L3 The Proven Snowmobile that never lets you down
Posts: 108
Location!: East Central MN
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Post by stinger4me on Nov 30, 2016 9:55:00 GMT -5
Awesome! We have the same sled with the same motor in our family collection. I really like that motor, it's a smooth runner and its like a heater blowing right in your lap. Perfect for the ladies who are "fair weather riders" and don't like to get cold.
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amrguy17
L1 Scorpion - The Great Snowmobile
Posts: 16
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Post by amrguy17 on Nov 22, 2022 10:02:49 GMT -5
Got the K440-2Tengine done a couple years ago and runs great. I went .40 over with OEM pistons. The tillotson carb was a little bit of a pain in the ass though. Anybody know what clutch I can use as a replacement. The clutch just creeps alot
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