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Cracked Blocks on Wet sleeve engines
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51ACWD View Drop Down
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Joined: 24 Dec 2015
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Points: 243 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 51ACWD Quote  Post ReplyReply Direct Link To This Post Topic: Cracked Blocks on Wet sleeve engines
    Posted: 08 Apr 2018 at 7:32pm
Been doing a bit of looking and asking and I don't know if I've come to an answer yet. I know that many Allis'out there have had a cracked block behind the carburetor. I'm wanting to make sure this crack (which was fixed sometime in the past) did not go into a water jacket. Do wet sleeve blocks posess water jackets on the sides of the blocks or just around the cylinder liner?
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MACK View Drop Down
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Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2018 at 7:43pm
If you are talking 201 or 226, if it is cracked behind carburetor, it into water Janet.      MACK
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SteveM C/IL View Drop Down
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Points: 8496 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2018 at 8:57pm
Unless it's just above the pan rail from a rod,any crack you find is in a water jacket
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WF owner View Drop Down
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Points: 4890 		Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2018 at 9:06pm
...and most of the cracks were caused by having water in them instead of antifreeze. When it got cold, they froze (the water expanded as it turned to ice) and cracked.
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51ACWD View Drop Down
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Points: 243 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 51ACWD Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2018 at 8:57am
The engine in question is the 318UM from a 1936 U. That's kind of what I thought. I was just trying to understand more of a wet sleeve vs a dry sleeve engine. As long as the cylinders are sealed around the top and bottom seals, and the crack sealed, I should be okay?

Edited by 51ACWD - 09 Apr 2018 at 8:59am
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HoughMade View Drop Down
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Points: 706 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HoughMade Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2018 at 8:59am
Assuming the crack in the block is repaired well enough to hold the pressure of a cooling system at full operating temp, the block crack should not affect the combustion chamber.
1951 B
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51ACWD View Drop Down
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Points: 243 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 51ACWD Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2018 at 9:03am
That makes me feel even more better. It's a non pressurized system.
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