by PublicEnemy#1 » Fri Jul 17, 2009 11:12 am
FWIW, Chrysler was using hardened valve seats as far back as 1954, at least, making unleaded vs. leaded a non issue.
Regarding over-engineering... the internal combustion engine is still being used to power 99% of all vehicles on the road today. Seems to be that even a Model T can be run on the road today, so how can its engineering be obsolete or over-engineered?
When gasoline is no longer available and the cars are still around, but can no longer run, then overengineering could be applied.
As long as we run them on gas, they are still viable.