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The issue was finally resolved. Had the builder of the engine come over and tune the engine for WOT and adjusting the load from minimum to maximum. Took a few hours of playing and adjustments but it is now functioning as it should. Lots of changes to the timing and fuel. Now it is running quite...

DC, now I understand. Thank you!! Will look at that Thanks again

TCJBOLDIE, Thanks for the input, greatly appreciated. Question-WOT max DC: what are you referring to? Coolant temp at failure was 106.3 deg C/ , MAT was 51.9 deg C, MAP was 20.8 inches. I have intercooler sensors but was not recording that data at the time. I will check with 4 Piston, thanks...

I have now gone thru 2 L15BE engine failures due to detonation (my opinion). The first one was my fault due to a leak in the turbo output. The second event is a total unknown WOT resulting in a piston with a hole in it. This is a unique application (off road). I need to get advice on tuning. The...

Brand new to this forum, so please bear with me. I have a Honda L15BE turbo in my plane and I am having a starting problem. First some history... This is an experimental aircraft, Wittman Tailwind W10, and I had been flying off the hours in my phase I test plan. I had an incident on landing...