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Allis C engine rebuild
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3rd generation View Drop Down
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Joined: Yesterday
Location: Iowa
Points: 2 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 3rd generation Quote  Post ReplyReply Direct Link To This Post Topic: Allis C engine rebuild
    Posted: Yesterday at 8:15am
This is my first post. I have an Allis C with original steel pistons. My bore gauge is showing .003”- .006” over 3.375”. The two inside bores have slight pitting. This tractor will be used for mowing with any luck for the next 20 years.
Are all rebuild piston sleeve kits the same in quality? Second question. The valve seats need ground. What is the acceptable tolerance for valve guides. My AC book lacks wear specs.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 88225 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 21 hours 5 minutes ago at 6:35pm
all of the aftermarket kits for the B-C motors are overbore 3-7/16 inch dia and you get aluminum pistons and new lines... Good plan.... if they all come from the same factory in CHINA, i dont know... have not heard of any "kits" that are better or worse than others..
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 88225 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 21 hours 3 minutes ago at 6:37pm
normally valve guides have .002- .003 clearance.... if you up to .005 then you need new guides.... intakes will suck oil past them if your past .004

Edited by steve(ill) - 21 hours 2 minutes ago at 6:38pm
Like them all, but love the "B"s.
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