ORIGINAL: Sport_Pilot
I'm getting about the same power, but mine is a bit over the hill and using lower nitro. I think you should get about 14,000 when it is broken in. Less with 5%, I think there is a low compression version, not sure, not mine. But you really can't tell with a new engine, the compression ratio has noting to do with the ring seal, and it may have as much or more compression when broken in. Compression leakage may be why it is running well on 10% as well.
thank you for the experience!
I see that compression is increasing tank by tank.. but i continuos using 10% of nitro because is a more popular fuel overhere (more cheap and easy to find). But, i will change the miracle plug (i really enjoyed this plug, the idle can run very low for this mild to high performance engine, not to easy to see) for a colder one, maybe OS A8, just to prevent detonation.
I will post some pictures of my Fox engines so soon..
