Originally Posted By: BuickGN
I agree with you that specific output has gone up significantly in modern cars on average but it has nothing to do with valvetrain requirements.
Well, maybe not "nothing" but certainly very little. While cams are very aggressive they're all rollers now.
We have already experienced the "heartbreak" of a beautiful engine we built in an old Chevy PU that was destroyed by using new Mobil 1 in it!
The guy came back to me and could not figure out what had happened. Luckily the motor was easily repaired with almost all new valve gear, but now everyone is quite careful about what oil they grab off my shelf.
I agree with you that specific output has gone up significantly in modern cars on average but it has nothing to do with valvetrain requirements.
Well, maybe not "nothing" but certainly very little. While cams are very aggressive they're all rollers now.
We have already experienced the "heartbreak" of a beautiful engine we built in an old Chevy PU that was destroyed by using new Mobil 1 in it!
The guy came back to me and could not figure out what had happened. Luckily the motor was easily repaired with almost all new valve gear, but now everyone is quite careful about what oil they grab off my shelf.