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Lycoming Sued
Here's a reference to the lawsuit:
http://www.prime-mover.com/Engines/Marvel/index.html And if you have valve train problems, like lifter spalling, sticking valves, and premature guide wear with your Lycoming, this may explain why: http://www.prime-mover.com/Engines/Marvel/tbo3.html Take your time and read it all and study the diagrams showing Lycoming's obsolete mushroom valve lifter bodies. Sometime back we had a discussion about which valves run hotter --- Lycoming's or Continentals. Most people were surprised to learn that even with sodium-filled exhaust valves and higher oil pressures, Lycoming valves and guides ran hotter. These studies may explain a reason why. If you run a Lycoming O-320 or O-360 and find that the even cylinders (pilot's side) enjoyed better valve train wear than the odd cylinders (co-pilot's side), these articles may explain why. Lycomings are still great engines, just need to be brought into the 21st century. |
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