A good friend of mine bought a Phoenix 8 at our LHS and is letting me get it ready for spring flying. It came with a pumped Enya 60X with a Hatori pipe (I think) setup. Since it was seized up, the LHS owner said to throw that thing away and put an OS, YS or Webra on it. I rebuilt it giving it the crockpot/antifreeze treatment and it came out like new. On the first bench run I achieved 14,200rpm with an 11x7 APC prop and 5% sig fuel. The header appears uncut so I hope to get near 15k rpm when it's tuned. I never thought much of Enya's but after seeing this one run I'm more of a fan.

Other good engines would be the OS FSR series, Webra Speed 60, YS 60 IMO.