90, 91, 92, 93 Mustang GT?

[Old Guy with 87 GT]

Originally posted by Mach 1
In my experience, exactly the opposite is true, and in theory it should be exactly the opposite.

My forge pistoned 5.0 starting burning oil after around 105K, and my hyper pistoned 5.0 never used a drop extra.

The hyper have tighter tolerances, so they should hold thier ring seat longer. The hyper pistons dont expand as much as forged pistons when hot, so they can be made to run tighter clearances.

you may be intirely correct ,i'm by far not an expert , i based my opinion on heresay and what i've been told from engine guru's

from what i was lead to believe ,the forged moters will start burning oil earlier ,looser claerances ....more dependant on the rings ,but the rings stay seated longer cause the bore quality lasts longer
the hyper motors won't hold there bore quality as well ,the tighter clearances wear the bores shape and hone faster causing the rings to loose there seating eventually

i could be wrong ,i don't have a massive amount of experence with both moters .......,maybe some body else with more experience running both moters can chime in and correct me if i'm wrong