Mr. Panic, More than once I've seen the term L6. What is an L6 and why don't they need ctrwts? Being an older guy, I'm not familiar w/ that. L used to mean side valve or flathead engs. The letter I referred to an overhead like a 216, 235, 261 Chev and any valve arrangement of the type. Was that L6 term added in the last few years to mean something else? Would appreciate an update. Experimental aircraft can run single ignition. The Diesels don't need it at all. Thanks, David
