It's on C14. Thought about giving the Q16 another shot. Everyone but me has made more power with it.
Ours made about 10 more over C-14 on the dyno with C-25.
We're pour just a tick under 14-1 and only spun it to 8500, which was 300 past peak.
This engine started at 16.2:1, but is now closer to 14:1 after Brett fixed the poor chamber work by the previous builder and having to sink the valves some to fix the crappy valve job from the previous builder.
I have never run C25...I believe peak HP on mine to be around 8100.
I just checked my notes from the dyno. C-25 was worth 12 numbers over C-14, with a 894hp peak @8200.
Might wanna give it a shot....
Do you have any jetting notes between the two fuels on the dyno?
