Mike I have a 914 in my monowheel... We have logged almost 850 hours on the engine. In 2000 with about 43 hours on the plane we left Florida going to Arlington, Washington for the fly-in. On the trip out and return, and the side trips, we put almost 100 hours on the tach, with no problems...The turbo eliminates density altitude problems out west on takeoff's... The engine has had some problems, but nothing serious, just normal operating items...We fly in the high teens if the winds are in our favor...I go 50 hours with oil changes, with no oil useage...We have replaced the Stator, Voltage regulator,about 20 hours ago. These are the only major items. Our engine is one of the early 914's, and at that time Rotax did not have in place the web site that they have now...Our learing curve was harder in under standing the engine, and how it needed to be run...Every one tried to operate them like the big bore engines..Low RPM"S .If you fly a lot in the high teens, you need to keep the plugs gapped at the minumium gap specified by Rotax..If the gap is set wide, the plugs will misfire ocassionally...The turbo will pull 40 inches MP on take-off  here at sea level if I go full throttle on takeoff.. I have run the engine at 5300 and 32 inches MP since new on cross countries, and fuel burn averages 5.5 GPH, which results in 142.knots in speed. I hope this answers some of your questions.....This is what works for me, other 914 drivers will have different approaches on how to run a 914. Jim Brown ________________________________ From: janmarker To: europa-list@matronics.com Sent: Mon, August 23, 2010 7:41:31 AM Subject: Europa-List: Engine Selection Rotax 914? --> Europa-List message posted by: "janmarker" I am at the point in the build of my Europa XS Monowheel where I need to make a decision on engine selection.  I have always considered the 914 the logical choice for the high density altitude airstrips where I fly at New Mexico, Utah and Colorado.  Typical summer time density altitudes are at 7000 to 9000 ft in the morning and typical cruising altitudes are 9500 to 12500 MSL.  I believe the 914 will provide the performance margin needed in this environment.  However, I am concerned that the 914 may have reliability or maintenance issues that would result in frequent maintenance actions or failure of components (TCU, turbo, boost pumps, etc) that would make life miserable for long cross country flights.  I don’t have specific data that would suggest that the 914 has significant reliability or maintenance issues.  I have read an account of an Europa owner that changed out his 914 for a 912S due to engine issues.  I have over 400 hours of mostly trouble free operations with the Rotax 912S in my RANS S-18.  I would install the 914 in my Europa in a heartbeat if I could expect similar reliability that I have experienced with the 912S.  For those operating the Rotax 914, I would very much appreciate input on your operational experience with the 914.  Should I be concerned about maintenance or reliability with the 914?  Mike Marker Europa A197 -------- Mike Marker Read this topic online here: http://forums.matronics.com/viewtopic.php?p=309858#309858               -Matt Dralle, List Admin.======