Join Date: Mar 2002
Location: California, California
I'm down to a 45 pilot. Tried the 55, then the 50. This is with the JD blue needle for the 510/450. If I can't clean up the carburation off idle, I'll go back to the stock needle or maybe try the red needle (leaner) and start over. I'm spot on above 20% throttle and it pulls a lot harder and revs out quicker than with the stock exhaust/carb settings. Above around 4500 rpm, things start happening!
I could probably go down to a 180, might try that later. With the stock needle, I would start at the 5th position with a 55 or 58 pilot. That should be close but be prepared for some trial and error.
The Boyesen plate supposedly eliminates the aeration in the accelerator pump that can cause a momentary delay in the squirt when cracking the throttle open. Didn't notice this problem before but I had the plate so I put it on. The FCR MX allows some adjustment of pump squirt timing. Haven't messed with that and I don't think I will need too.
07 Ducati HM-S
06 HVA SM610
04 HVA SM450R w/Rekluse
04 HVA TE250 w/Reluse
04 HVA CR125
05 Buell XB9SX
03 Honda CRF170R