I opened up my engine to change a headgasket as it was leaking oil from the lower right corner and I saw this. Can someone tell me what pistons are these, because they aren't 4e-fte stock for sure. See the lower valve pockets? Any ideas?
Yes I know they aren't forged but as we all know , the 4efte stock pistons are sensitive to its ringlands. So, I was wondering maybe they are better in some way . Anybody? It must be a reason that someone put them in there don't you think?
They are about the same as stock 4E pistons. Both good for +-250HP
Its just easy to source that is why people use them. Might as well just use the low comp 5E pistons