deuskid said:
At some point there were no "fully engineered auto conversion packages' .. someone had to do them.
there still is no such thing. never will be. if you started out to design an aircraft engine, you'd end up with.....an aircraft engine (lyco, radial, turbine, deltahawk, etc)...some are better than others, but they all started as aircraft engines. eggenfellner is an engineered "package" but not an "engineered aircraft" package. i love subies (i raced them). it's very good but time will tell whether it stands the rigors of aviation (i sincerely hope it does)
tobin is correct. nothing about an RV is "experimental"...zip, zilch, nada.
we are "assemblers" of well-engineered components. therein lies the key.
you neglected to mention the minor detail of attaching a propellor to the engine....making torque at 2700 rpm is meaningless if you can't attach a prop to the crankshaft....which you can't with an auto engine. this is the only guarantee i can give you: you will need a gearbox, and you will explode many engines along the way.
if you plan to "roll your own" engine, be advised to have expert engineering to design the engine mount AND be prepared to FULLY re-design the cooling system, crankshaft, PSRU, engine block, oil pressure system, oil cooling system, fuel delivery, accessory drives, electrical, ECU if any.....am i getting your attention?....and the weight of an auto-diesel is FAR heavier than anything else you can hang on an RV, so be prepared to address the CG problem with drastic airframe mods (aeronautical engineer)....which requires extensive flight testing, vibration analysis and flutter testing.
assuming all of this is at your disposal, along with copious amounts of money and YEARS before anything works, the next phase is propeller testing (big dollars, many more blown engines)
before you attempt any auto-conversions, call Jan Eggenfellner and Tracy Crook....they will gladly share the extent of the cost/effort to achieve anything close to "airworthy". also read the wealth of info on alternative engines elsewhere in this (and other) forums....this is a favorite subject of the community with no lack of opinions along with some VERY good advice/lessons learned from people who've been deeply involved in aviation engines for many years.
one final comment: you state a goal of "long term long distance commuting" which implies "reliability"...the single most difficult thing to achieve with engines in aircraft.
if you've read this far and are still interested/sane, by all means go for it. that's what "experimental" is all about.