QUOTE (Dru86 @ May 19 2008, 04:08 AM)
Try going way smaller than 150s as you don't have ram air that's way to big. With my 660 running 97 yzf600 carbs with a modified fzr600 airbox I'm using 116s, it would hardly rev above 7k when it had the 150s in there. When we put it on the dyno the A/F was 8:1 or so we then went way smaller on the jets and the power pretty much doubled. The earlier yzf600s that didn't have ram air used 112s or around there.
Right you are..just after I made that post I said to myself, I wonder what that extra set of 95 carbs I picked up off ebay has in 'em..previously, I was too lazy to swap them......and sure enough it had a factory jet kit in them!! I also clued in when I saw it had 108 main jets (I think they're mikuni..? as they don't say Keihin on them or have a "k", they just say 108 and they're solid brass..anyone?)
So, then I cleaned the whole set up, adjusted the needles and stuck them on the bike and wow..big difference, even though it will need some more tuning (bigger main jets I think and so on)
The setup now is:
95 YZF600 Motor & electrics
Custom-made Fiberglass Airbox, with Uni filter
D&D Headers & Midpipe
RS-3 Zyclone Can
97 Fuel Pump
95 Carbs (97 was removed)
-108 Mains all across (all I had for now)
-Factory jet kit needles at #3 position (We're at #4..I thought that would be too rich though)
-Float heights were all at 23mm
-I didn't check air screw settings..
Not sure what some of you are using for your settings? Any similar setups?
The RPM hangs a little before descending down to idle, and bogs a bit around 4000rpm..and something going on around 6-7k rpm..but today was an 8C day, so I'll have to test her on a warm day too..
Factory Pro suggests to always start with the mains, so I think I'll run down to the Yami dealer and get a set of 110's and 112's..or 112's first? They're easy enough to swap out on the bike..
Appreciate the help eh, any suggs are welcome