Is the jetting on both bikes taken care of with dyno-jet jetting? The sea level jetting is quite different on the low side.....is this per engine builders recommendations?

 

165/170 dyno jet......tad lean........will be fixed this weekend!

 

what needle position and what size pilot are you running?
that seems really rich?

 

garyc660R - Yes Sparks recommends 142/148 with their setup so that is what they are running, haven't even tried going up or down with their bikes. I like running a little richer than them. I have a little bigger filter setup than them so I'm flowing a little more air. The FCR carbs are not near as tempermental as the stock carbs are. One jet size actually is very hard to notice a difference.

 

12:1 686
Ported head
Stage II Hot Cam
FMF Power Bomb and Titanium 4
No air box, Proflow with K&N
25 pilot jets, 3 turns out
Stock needles on the 3rd clip
190/195 Mikuni Mains
Float level just above the mating surface
NGK- JR10B (Two heat ranges Colder)


all @ Sealevel and Running great except a lean Hesitation at 7/8 throttle that I'm working on.[img]i/expressions/face-icon-small-wink.gif[/img][img]i/expressions/face-icon-small-happy.gif[/img]

 

12.5/1 686
stage2
ported
FMF power bomb and PCIV

no mains
no pilots
no screws
needle is turned about one full turn in from the way it was shipped
power jet is 2 turns out from seated

runs good
[img]i/expressions/face-icon-small-tongue.gif[/img][img]i/expressions/face-icon-small-tongue.gif[/img][img]i/expressions/face-icon-small-tongue.gif[/img][img]i/expressions/face-icon-small-tongue.gif[/img][img]i/expressions/face-icon-small-tongue.gif[/img][img]i/expressions/face-icon-small-tongue.gif[/img][img]i/expressions/face-icon-small-tongue.gif[/img]