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Allis CA engine rebuild
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carco21554 View Drop Down
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Joined: 27 Dec 2015
Location: Williamsburg Oh
Points: 18 		Post Options Post Options   Thanks (0) Thanks(0)   Quote carco21554 Quote  Post ReplyReply Direct Link To This Post Topic: Allis CA engine rebuild
    Posted: 23 Jul 2017 at 9:26pm
Question, Allis CA engine once upon a time had a rebuild kit "Power Pack", my Father installed but I can no longer mine his wealth of knowledge. This may/may not have been the proper terminology. This kit would increase Horsepower maybe 3-4 horse.
Does anyone know what was different in the kit??, liner/piston diameter or piston dish/flat top??? OR,,,,,
Is it possible to still obtain this kit??
I have a CA I am restoring, that has a leaking liner and a lightly scored liner.
Thanks for responses.
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Gerald J. View Drop Down
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Joined: 12 Sep 2009
Location: Hamilton Co, IA
Points: 5636 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerald J. Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2017 at 10:37am
Could be taller pistons for higher compression ratio to use modern higher octane gasoline or thinner wall sleeves for a bigger cylinder bore.

I have a shop manual for G, B, C, and CA on line at: http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf

Gerald J.
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Dick L View Drop Down
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Joined: 12 Sep 2009
Location: Edon Ohio
Points: 5087 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dick L Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2017 at 11:22am
Most likely what is called an over bore kit. It takes it from 3 3/8" pistons to 3 7/16" pistons.
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Bill Long View Drop Down
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Joined: 12 Sep 2009
Location: Bel Air, MD
Points: 4556 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill Long Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2017 at 3:59pm
I remember the original B tractor came out with a smaller bore engine - 116 Cu In to 125 Cu In.  When we rebuilt them we always put in the larger motor kit - sleeves, rings, pistons, and wrist pins.  Upped the horsepower a few.  Customers always appreciated it. 
I do not recall an oversize kit being made for the CA.  However, some after market person could have, as Dick says, increased the bore or raised the cylinders a little to increase power 
Good Luck!
Bill Long
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JimD View Drop Down
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Joined: 11 Sep 2009
Location: Mounds, OK
Points: 2112 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JimD Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jul 2017 at 8:51am
Owner of OKtractor.com PM for an instant response on parts. Open M-F 9-6 Central.

We have new and used parts. 877-378-6543
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