Farm Equipment - D-15 vs D-14 crankshaft

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D-15 vs D-14 crankshaft

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=13381
Printed Date: 01 Feb 2025 at 11:45am
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Topic: D-15 vs D-14 crankshaft

Posted By: baverwolf
Subject: D-15 vs D-14 crankshaft
Date Posted: 04 Jun 2010 at 1:58pm

I have a D-14 that I am working on and getting ready to overhaul. I was curious if a crank from a D-15 series I will interchange?? How about a d-15 series II?

Thanks!

Ben

Replies:

Posted By: ORANGE FARM
Date Posted: 04 Jun 2010 at 2:25pm

D15 SER I AND D15 SER II ARE THE SAME. THE BIG DIFFERENTS IS THE RODS.

Posted By: CTuckerNWIL
Date Posted: 04 Jun 2010 at 3:25pm

According to tractordata.com the stroke is the same in all 3 tractors with the series II D15 having a bigger bore than the 14 or 15 series I. They also show a difference in compression ratio between the 14 and series I 15. I wonder if you can't replace the internals in a 14 to make it a 160 cu in like the series II 15.

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Posted By: Rogers
Date Posted: 04 Jun 2010 at 5:47pm

The crankshaft from a D14 and D15 series I are the same.

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Think for yourself and be your own expert. Be willing to change your mind; however, willingness to change your mind doesn’t mean that you will. Blindly following any path is the pinnacle of insanity.

Posted By: mlpankey
Date Posted: 04 Jun 2010 at 6:13pm

You can bore and stroke them . Jamie could probably tell you everything that can be done .

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Posted By: norm [ind]
Date Posted: 04 Jun 2010 at 7:47pm

crankshafts are the same on d-14-15 sleeves are different 160 orings are in block

d-14 orings are on sleeves different iin cu in

Posted By: Chalmersbob
Date Posted: 04 Jun 2010 at 9:26pm

The D-14 O rings are in the block also.

I just installed a set.

Bob

Posted By: baverwolf
Date Posted: 04 Jun 2010 at 10:47pm

So, I can install the crank from a D-15 into my D-14. They are identical right? The D-14, D-15 series I and II both have the same stroke right?

Thanks!

Ben

Posted By: baverwolf
Date Posted: 04 Jun 2010 at 10:52pm

Ok just looked at the tractor data.com site. Lots of good stuff there!!!