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Piston Size

594 Views 6 Replies 5 Participants Last post by  Mikey Likes It
I am into my engine and am having trouble finding engine specs. Does anyone have the cylinder bore size on a 2005 4.0 engine? I have checked and it shows 3.740" or 95.0 mm but the information I have accessed shows it should be 95.5 mm. The piston has D 05 EA2 and RC 72 stamped on top. Want to order parts and be sure my motor has or has not had work done to it in the past.

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Photo of piston, and the damage was found because of a head gasket issue when we pulled the heads. Motor ran fine and no excess oil consumption.
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Before you spend money on parts, consider another (much newer and low mileage) engine. With what I see in that picture, there is also bore damage, and head damage. By the time you pay for ALL of the parts and machine work you can almost always buy a good used late model engine. The 4.0 never changed anything critical during its run. Some external stuff changed, keep all your old wiring and sensors. But the long block itself will interchange between all years.
+1 , get a low milage engine, will save you a lot of $$ on the long run
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