Gavin, I personally would not see a problem with using a Lycoming instead of a Continental. Just different motor mounts. It is my understanding from those that have used the o-200, and the 0-85 series engines, and I expect the same report for the IO-240, that the Continental engines run smoother than Lycoming. I can tell you from personal experience that Lycoming engines are rough as a cob near idle unless you have additional balancing performed during a rebuild. The factory prop on the C152 is I believe a 67" McCauley prop. The part number can be retrieved from any of the 152 POHs, section 6 off the equipment list, in the weight and balance section. McCauley could then tell you the prop grind, most likely a combination prop. The early O-235 were rated at 105hp, then 110hp, and the last versions near 1980 were rated 115hp. Their carbs do NOT have an accelerator pump, and need carb heat to prevent icing if operating below 2000rpms. You also loose any warranty from Lycoming if you stc it over to auto gas. EAA website has the information on how to get the STC for auto gas conversion. I think this would allow the FAA to still consider it a certified engine and shorten the fly off time. Comments are welcome. Trying to finish my KR wiring.... Colin Rainey KR2(td) crain...@cfl.rr.com Sanford, Florida FLY SAFE!!!!
