ORIGINAL: pe reivers
Depends on your cooling setup, and how much of the cooling ribs broke off. These parts DO have a function. You will see cylinder distortion for sure. How much this will be noticed depends on the cylinder roundness to begin with. Some engines are more square than round, so you might not notice it at all.
Comp-arf is not an engine IIRC. Just another troll?
if i got what u mean correctly
by i said i crashed my comp-arf plane not an engine

my engine is DLE55cc