[undy]

So... I get that it's a costly and risky to build an alloy FE. I agree with that, but what I differ on is the increased HP. Yes, I hear that it "moves around a lot", concur there too. But... that's on warm-up. Once things warm up to design temperature, if it was built correctly, the bearing clearances, piston to cylinder clearances, ring gaps & lifter clearances/preloads etc get where they're supposed to be. Unless you run a cold engine the HP levels should be very close to being equal. I've heard no explanation thus for proving otherwise.

All alloy engines, OEM inclusive, would be subject to this. It just isn't so...

EDIT: just saw Brent's post. I guess we'll have to agree to disagree here. It's really a moot point considering the intent of the original post.