Dusting off an old topic. Deltahawk engines came out with news this year that they are currently seeking approval for a 235 hp variant on their Jet A (diesel) for cylinder. Their design looks very straightforward and low maintenance. It should have a great TBO if/when approved. They are currently doing a survey to see what platforms to pursue.
http://deltahawk.com/survey They are looking at an installed price point of $110K. That's higher than a rebuilt Continental, not higher than a new one, if you can even get one. It would just be good to have a lower emission, lower maintenance and longer life solution to the 360's. Competition certainly would not hurt the current engine pricing. There are hybrid electric alternatives being tested in a 337 platform and Deltahawk is promoting this as a potential partner to the electric engine that part of that. I plan to fly this thing until I can no longer get duct tape to hold the wings on,
so it's not a sunk cost issue for me. I need a long life, efficient solution. Any thoughts?