Safety Officer Posted March 1, 2012 Report Share Posted March 1, 2012 This is what happens if you use really old fuel or the wrong octane. This happens when the engine is running too hot, too. This one was 275F. When it's hot reduce throttle and land or you may be buying a new engine or at the least spend $6K+ to get it fixed 912 piston 2.pdf 912 cylinder 1.pdf 912 head.pdf 912 piston 1.pdf Link to comment Share on other sites More sharing options...
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