Highly modified 0-320 that started life in a 172 now a IO-320 with Lycon 10.5 to 1 pistons, Bendix Fuel Injection with Tuned stainless steel cold air intake and 4 into 1 tuned stainless exhaust , a magnesium oil pan with a oil flop tube for unlimited knife edge flight. It also features a lightweight starter. The exhaust features a unique feature that lowers the case pressure using venturi suction to burn the case blowby and eliminate oil from seeping through the seams in the engine. As a side note Hartzell Propeller will not knowingly sell CS or Aluminum propellers for use on modified engines because of high combustion impulses. This engine is to go in my DR-107

 

The DR-107 is a single seat 10g + - aerobatic competition aircraft. HP from 115 to 210 can be used. Designed by Dan Rihn who is a aeronautical engineer for Northrop and lead on a new stealth pilotless fighter that is now being developed. The construction is tube, wood and fabric. It is sitting on it's nose in the picture. Weight is 700lbs empty, 220 VNE and will cruise at 180 (inverted) also has a 420 deg roll rate per second ( don't blink ) It is said it can eat Extra 300's for breakfast and won't break the piggy bank. The main wing spar is a laminated 5 ply solid fir spar that measures 5 X 8 in the center section and tapers to the tip. Dale