I have yet to see someone say what exactly is the reliability problem with auto engines. PRSU aside.... Who has the pile of broken cranks, rods, blocks? I am sure Ross would agree, the hard parts in aircraft engines and auto engines are made the same, and the stock internals on either are nowhere as nice as aftermarket race parts. People keep bringing up the reliability issue.... what is it? What breaks that doesn't break in a "aircraft" engine?