Hey z1dave, I didn't say not to use the 54s; just said I think you are exposing yourself to issues that can easily be avoided by selecting another cam that will provide similar performance. I agree with Bubbie's comment that compression = power but one can have too much of any good thing. I am just saying that you might want to consider a more conservative cam set.
I am not going by what others have said on another forum; just going by the numbers and the numbers I see are different from Bubbies. I am seeing 10.9 static, 9.8 corrected and CCP at 203psi with your heads, .040" head gasket, 54 cams at your elevation. The Kompressor head chamber volume should run about 76cc. Crank the numbers into a compression calculator and see what you come up with.
Corrected CR of 9.8 with a carbed bike? I think you are looking at detonation and related tuning issues. I am not a professional engine builder; don't build for a living, but the motors I have built for friends and family are typically configured to keep CCP below 190psi and corrected CR between 9.3 and 9.6 to avoid tuning and detonation issues. If your bike was EFI, I would be less concerned but still see the 54s with your current configuration on the cusp with regard to detonation and being a challenge to tune.
As always, JMHO, your ride, you get to decide. Good luck with whatever you decide.:newsmile025:
