I tested the 160 mains today (conditions dry, temp about 41F). Test setup was 160 mains, 42 pilots, no shims, stock needle, pilot screws 1.25 turns out, & Kawi slide springs.
There was a slight but noticable hesitation under mild acceleration from cruise with a cold motor. That situation improved when the motor "fully" warmed up. To me that indicates a mild lean condition in that situation.
The bike pulled stronger on top to redline than it did with the prior 158 setup. So far the 160's seem good.
Now I need to focus on the midrange & low-speed. I think another quarter turn out on the pilots might be closer to the mark. I'll try that next.
Maybe a single "thin" shim on the needles if the above doesn't improve initial acceleration from cruise.
There's no doubt in my mind that that Kawi springs impacted the low speed tuning on my bike. That said, however, as is it will cruise smoothly at any RPM & hold a steady 2 - 3k whereever I set it, in any of the lower gears, and will cruise smoothly on the highway at 4 - 5k.
It's almost there. A couple more minor adjustments & then I'm going to side-gap the plugs & head for the dyno, time & weather permitting.
Stay tuned!
Last edited by B02S4; 12/14/2008 6:45 PM.
