Originally Posted by
aznitronut
Chris, I ran the C6 I was talking to about last week, went with the needles almost flush as you suggested, temps went to about the 230 range, perfect. next question, how about the Killer 9, what are needles on that looking like? If you do not have one, any help out there is appreciated, temps are decent, still real new, maybe 2 fuel bottles, but, just isn't right, sounds lean, plenty of smoke, of course it will, I'm breaking it in with 20% Byrons, with the higher oil content, Engine runs around 200-230 range.
It's lean out of the box, for easy cold/new starting. Once you race tune it, it should not sound as lean. Just take it easy at 75-80% (max) until you get at least a gallon on it. Then it will really comes to life.
My K9 needles are currently at about 1mm in from flush on top; 2.5mm in on bottom. I'm running in a dry 40-50 deg F climate. I use the OD97T plug for an all-day spitting idle. If you use anything hotter, like an OS-p3 it will run lean.