3 ms·

On the other hand, imagine the maintenance costs in current US dollars on a modern 12-cylinder supercharged aircraft engine. Would get ridiculous very quick.

• adolph 2y ago
  Not cheaper by the dozen you say?
• bigiain 2y ago
  My guess is that in combat conditions where the 1490hp was getting used, probably only a few of them ever lasted long enough to get to a valve clearance service interval...