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Discussion Starter · #1 ·
Ok. I just spent an hour and a half searching this site and others for cylinder diameter specs and ring gap specs for a stock bore 7.3. Is this info posted somewhere? The bores are clean (not gouged) and the crosshatch is almost gone mid cylinder on all cylinders. Going to pull pistons to check rings for gap once I can get specs. Thanks in advance!!
 

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Here's what's in the workshop manual.

Cylinder bores - 4.1096 - 4.1103
Max out of round and/or taper: 0.0005

Ring end gap -
Top compression: 0.014 - 0.024
Second compression: 0.062 - 0.072
Oil control: 0.012 - 0.024
 
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Discussion Starter · #3 ·
Thank you Pikachu. Could you look up one more thing, piston diameter specs?
 

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Piston skirt diameter: 4.10475" +/- 0.00025, measured 90 degrees to the pin, 1.684" below the oil ring groove, at room temperature.
Piston wrist pin bore: 1.3085 - 1.3088"
Piston protrusion above deck: 0.010 - 0.031"
 

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Discussion Starter · #5 ·
Thank you again Pik, all pistons measured good with your numbers.
 

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You're quite welcome. Glad I could help out.
 
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