440 IC compression

General help and support for your Lindeman through 2010 John Deere crawler
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440 iron popper
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440 IC compression

Post by 440 iron popper » Sun Oct 17, 2010 1:20 pm

I'm new to this board and have a rebuild project beginning soon. I checked the compression this morning on my 1958 440IC. Both cylinders at 60 psi... I saw that it should be around 120 according to some posts on this site. What's acceptable? I guess I'll have a ring job to do...
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Lavoy
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Post by Lavoy » Mon Oct 18, 2010 8:40 am

60 is too low yes. You may or may not get very good results from rings, these engine are normally quite tapered in about the middle of the bore. I usually see .020-.040 of egg shape to them.
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