I am not sure why I am getting detonation. The RK tek head should not be raising the compression ratio that much. I am already running 101 octane fuel. The jetting did seem to have a little lean spot around 1/3 throttle. I will do a pressure test once it is rebuilt to search for a potential air leak.
The jetting I was running at the time was
48 pilot
A/S 1.0
NECH needle on the 5th position ( I bought two needles that are richer on the suzuki chart in hopes I can richen the mixture but keep the same power delivery, I really liked the smoothness of the NECH)
170 main, the main doesnt seem to be an issue since when I go wide open it is fine, the issue seems to be 1/3 to 3/4 throttle at high rpm where I get the lean spot.
Engine mods are
RK Tek head 13.5 to 1 is the supposed ratio per the stamp on the head insert / S3 racing cylinder / House of horsepower exhaust
timing is not adjustable so I don't know how that could be a factor
When I rebuild I am going to back to the GP head that came on the bike when I bought it.
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