There are a number of things that lead me not to recomend a diesel conversion. One of our guys did a conversion on an O.S. 60 engine mounted in a 4*60. The first thing he did after getting it running was to mount an exhaust pipe that ran all the way to the back bumper. The stuff dripping out of it was nasty. He had to fiddle with the head compression as well as mix at the start of every days flying. I've got to say though that it ran well and sounded very nice. Idle was way better than with glow fuel. In the end, his experment only lasted a few weeks and he went back to a 90 size Saito as a replacement.

The fuel is also an issue as it has eather mixed in. Very volitable stuff I've heard.

My self, I'll stick with glow until I pass the 1.20 size. At that point the gassers come into their power curve if you will. The cost of the fuel isn't that much of a consideration compaired to what we have wrapped up in the rest of the plane. It cost me more to drive to the field and back than a full days flying cost. Way more when the gas was $4.70 a gallon.

Don