Farm Equipment - D12 engine Sleeves

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D12 engine Sleeves

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=131216
Printed Date: 23 May 2025 at 8:30am
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Topic: D12 engine Sleeves

Posted By: CTALLIS
Subject: D12 engine Sleeves
Date Posted: 11 Nov 2016 at 3:56pm

Are the sleeves in a d12 the same as a model B or C?

Replies:

Posted By: DrAllis
Date Posted: 11 Nov 2016 at 10:30pm

NO.

Posted By: GregLawlerMinn
Date Posted: 12 Nov 2016 at 8:38am

The D12 has the same engine as the D14 (149CI); except the earlier D12's had a smaller bore (138CI). The 149 CI piston/sleeve will drop right in the 138CI block.

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What this country needs is more unemployed politicians-and lawyers.
Currently have: 1 D14 and a D15S2.
With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC

Posted By: CTALLIS
Date Posted: 12 Nov 2016 at 2:54pm

thanks,

next question

anybody got a good used sleeve.

Posted By: wbecker
Date Posted: 12 Nov 2016 at 5:37pm

Also the same as later D10 149 engine.
What are you intending to use the tractor for?
I do have a sleeve you could have, it's not perfect, but not too bad.
It would be easily good enough for a show/parade tractor. Maybe other occasional work.
What is the condition of the one your replacing?
You can have it for the shipping if you want it.
Bill B

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Allis B, IB, Low B, G, D10, JD M, 8KCAB, C152