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Question on 4.0 OHV factory pistons

Braydencoc23

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U.S. Military - Veteran
ASE Certified Tech
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Indiana
Vehicle Year
1994
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Ford Ranger
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Manual
So I’m taking apart my 1994 4.0 OHV for a rebuild, while inspecting the pistons I’ve noticed 3 pistons are just Mahle with a 3 stamped on the dome while the others are Ford Mahle stamped with a 2 on the dome any reasoning on what the numbers on the dome mean and why they might’ve used the different pistons?
 


Angie

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V8 Engine Swap
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Vancouver area BC Canada
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92 & 83 project
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Ford
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V8
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4.0L 302
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Automatic
no idea, but if reusing same pistons, i would replace them into the same holes you took them out of just in case.... of all the 4's i have taken apart, first i have heard of any different numbers. (not that i was seeking anything though).

cheers
 

konrad911

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Ford Capri
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Measure the cylinder bores. Mine needed reboring to oversized pistons...
 

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