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D17 Gas Rebuild?

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=12478
Printed Date: 31 Jan 2025 at 9:51am
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Topic: D17 Gas Rebuild?
Posted By: BobHnwO
Subject: D17 Gas Rebuild?
Date Posted: 15 May 2010 at 5:56am
I'm rebuilding my 1958 D17 gas engine,piston rings measure .125 for compression rings and .185 for oil rings,haven't found any sets available to match,are these stock ring sizes,input please,TIA,Bob.

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Why do today what you can put off til tomorrow.



Replies:
Posted By: Denis in MI
Date Posted: 15 May 2010 at 6:34am
What bore and # of rings might help somebody find them for you.
 
If you need 4" bore and 3 compression rings per cylinder the hastings set is 2C702
 
Hope that helps,
Denis


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1938 B, 1945 B, 1941 IB, 1949 C, 2 1938 WCs, 3 1950 WDs, 1951 WD, 2 1955 WD45, 1957 D-14


Posted By: scott
Date Posted: 15 May 2010 at 6:52am
The Valu-bilt lists D-17 w 4" bore as having 1/8 compression rings and 3/16 oil rings.


Posted By: BobHnwO
Date Posted: 15 May 2010 at 7:32am
These are 4"bore,3 comp.and 1 oil ring,dish head,are they stock pistons,Bob.

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Why do today what you can put off til tomorrow.


Posted By: paulinkansas
Date Posted: 15 May 2010 at 11:29am
I've got a set of unused rings for the stock D17 gas.  I bought them before taking my engine apart and starting the rebuild.  During the process I found that the sleeves were scored pretty bad and the ring end gap was around .25 inch.  So I went with overbore sleeves, pistons and rings. 
 
There are part number 70230091.  I paid around $50 for them.  You can have them for less, just make me a private offer.  I can send you a picture of them first.


Posted By: BobHnwO
Date Posted: 15 May 2010 at 12:11pm
Thanks guys,I'm still waitin to get the heads and crank back to see what I'm gonna do.

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Why do today what you can put off til tomorrow.


Posted By: paulinkansas
Date Posted: 15 May 2010 at 12:30pm
If your heads were like mine, you'll need to go with an oversize kit. 


Posted By: Tony.Or
Date Posted: 15 May 2010 at 2:27pm
 Bob !  We  show     the  4" bore  rings , top 3 are .125  thick.  oil ring  is  .187  thick.
 
 also show  3 differt  ring  sets  for  4.125  bore engines.        Tony


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Posted By: BobHnwO
Date Posted: 15 May 2010 at 5:30pm
Thanks Tony.

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Why do today what you can put off til tomorrow.



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