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Where to get a standard Poston rings allis b
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Jt s. candycane View Drop Down
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Joined: 13 Aug 2025
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jt s. candycane Quote  Post ReplyReply Direct Link To This Post Topic: Where to get a standard Poston rings allis b
    Posted: Yesterday at 11:03am
Where to get standard piston rings for a a 1944 allis b ??

Also this tractor has the 125.5 cubic inch motor after 1943 right ??
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 87520 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 12:40pm
the engine serial number in on the left side bell housing area of the block... should be CExxxxxx   ... CE means 125 inch... The older engines (116 inch) were BExxxxx... and the number might be on the back of the enging behind #4 piston area......

Original engines are  3 -3/8 inch bore i beleive... If you get an AFTERMARKET kit, they are 3- 7/16 bore with new liners...
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
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Points: 87520 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 12:49pm
if you are SURE you want the 3-3/8 rings and uses the original liners an pistons... and cant find anything but the oversizie 3-7/16.... then i hae bought kits and individual rings from HASTINGS... It has been many years. They use to sell direct.. If they dont now, you may have to go thru NAPA or similar..
Like them all, but love the "B"s.
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Jt s. candycane View Drop Down
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jt s. candycane Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:00pm
Sn 69865 makes my b a 1944 model with 125 motor right ??

Can you get a standard piston rings and a standard complete rebuild kit ??
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 87520 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:30pm
i think all aftermarket kits are 3-7/16 bore..... If your getting liners and pistons, then it dont make much difference... only use the 3-3/8 if your trying to SAVE the old liners and pistons..

your motor SHOULD be a 3-3/8 bore, but is 80 years old... No saying that someone didnt put a 3-7/16 kit in it 30 years ago ??


Edited by steve(ill) - Yesterday at 9:49pm
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
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Points: 87520 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:39pm
normally you would not buy rings before a teardown... Inspection will show if you need liners and pistons.. a complete "overhaul" kit for a CE125 engine is about $500.  I have done several engine rebuilds using the OLD liners and pistons, or good USED liner if needed... That way you only need a set of 3-3/8 rings..

Edited by steve(ill) - Yesterday at 9:51pm
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
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Points: 87520 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:44pm
a couple places handle STANDARD....

https://stores.djstractorparts.com/piston-ring-set-4-cylinder-ab-2070d/



jjagparts.com





Edited by steve(ill) - Yesterday at 9:50pm
Like them all, but love the "B"s.
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8592 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 9 hours 35 minutes ago at 12:50pm
it would be foolish to order any parts before teardown. You may have undersize bearings and oversized sleeves. Your crank may need ground.
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Jt s. candycane View Drop Down
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jt s. candycane Quote  Post ReplyReply Direct Link To This Post Posted: 7 hours 41 minutes ago at 2:44pm
Pistons and liners are good
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Jt s. candycane View Drop Down
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jt s. candycane Quote  Post ReplyReply Direct Link To This Post Posted: 7 hours 36 minutes ago at 2:49pm
You have a full complete engine rebuild kit that is standard bore for a 125 motor for 500 a Good quality kit that is close to factory original ??
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WF owner View Drop Down
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Joined: 12 May 2013
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Points: 5007 		Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 5 hours 36 minutes ago at 4:49pm
If you are that far that you can replace rings, at the very least, I would pop the sleeves out and replace the O rings.
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Les Kerf View Drop Down
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Points: 1235 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 4 hours 21 minutes ago at 6:04pm
Originally posted by Jt s. candycane Jt s. candycane wrote:

Sn 69865 makes my b a 1944 model with 125 motor right ??

Can you get a standard piston rings and a standard complete rebuild kit ??

That tractor is more than 80 years old and has quite likely been overhauled a time or three.

Until you get the head off and measure the bores you really don't know what you need.

Steve gave excellent advice, please re-read his posts carefully before ordering parts.

Have fun! Smile
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