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Dry fitting cylinder sleeves on a 1939 B
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Cowdoc View Drop Down
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Joined: 23 Jul 2023
Location: Missouri
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cowdoc Quote  Post ReplyReply Direct Link To This Post Topic: Dry fitting cylinder sleeves on a 1939 B
    Posted: 23 Jul 2023 at 9:26pm
I'm overhauling an older B that was not running well and using oil. Lots of wear in the cylinders. I am getting ready to replace the cylinder sleeves. Dry fitting them, they will easily slide in until the first ridge before the o ring grooves, then they hang up. Are they supposed to slide in easily without the o rings, or is there supposed to be some resistance? I haven't put a lot of pressure on them at this point. Any thoughts or help would be appreciated. thank you
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WF owner View Drop Down
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Joined: 12 May 2013
Location: Bombay NY
Points: 5026 		Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2023 at 6:07am
They should slide in very easily without O rings and without much force with O rings. A wire brush in a die grinder works good to clean up the inside of the block. If you don't have a die grinder, a drill with an extension and wire brush will work. 

Make sure to clean the counterbores well. Even a little dirt or rust will make the sleeve standout too high.

After you install the sleeves, use some regular bolts with washers to stop the sleeves from moving when you turn the engine over to install pistons.
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8640 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2023 at 12:11pm
The bores have to be totally clean of scale and rust. Emery cloth is your friend. It is not quick or easy. When clean you should be able to slip a sleeve in the bore and turn it in circles by hand with no orings. If you cant do that you are not done cleaning....
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Cowdoc View Drop Down
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cowdoc Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2023 at 2:22pm
Thank you, that is what I needed to know. Got a lot to clean up...
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Allis dave View Drop Down
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Points: 3062 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2023 at 4:25pm
Make sure that whatever cleaning method you're using that you're not removing good material. Maybe you can use an emry cloth by hand, but don't put one of those sandpaper wheels on a drill or grinder and go to town. You'd hate to get everything installed and find out your orings are leaking becasue you got too excited.
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