See, new technology does come to aircraft engines from time to time. Sure, it may be new as in "new to the breed" or "new for this manufacturer," but the fact remains that both major piston-engine manufacturers are in a reinvigo-rated push to improve product. From Lycoming, introduction of roller tipped cam followers (or lifters) has become a battle cry in this push toward modernity. The company announced in 2004 that it would work with automotive supplier Delphi to develop the lifters, and had introduced them to the Experimental market by the summer of 2005 in select engines.
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