Farm Equipment - 14:1 or 16:1 compression 6080’s

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14:1 or 16:1 compression 6080’s

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=177983
Printed Date: 05 Sep 2025 at 9:19pm
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Topic: 14:1 or 16:1 compression 6080’s

Posted By: victoryallis
Subject: 14:1 or 16:1 compression 6080’s
Date Posted: 31 Jan 2021 at 11:56am

What year or serial number did the 6080’s go from 14:1 to 16:1 ratio?

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8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760

Replies:

Posted By: tbran
Date Posted: 01 Feb 2021 at 6:41pm

33k-20833 and up eng sn. 6080 bulletin was in may of 85. 6070 33k-20023

and 6060 sn 33k17813 possible sn 5639 ?

When they put in higher compression pistons they went to smaller hole size on nozzles.

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: rieg
Date Posted: 02 Feb 2021 at 9:54pm

I over-hauled my 6070 and the kit came with higher compression pistons, same as the 8010 I believe. It starts great in any temp imagine that, what a great surprise.

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rieg