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Discussion Starter · #1 ·
Yea, I've read enough posts and should know, but I'll ask anyway...

11:1, stage 2 cam, 673 bore, no air box just dual K&N's with prefilters,
Rossier pipe with supertrapp disks, 12 I think. May go back to the open end cap.
Stock size valves.
Mild porting.
Elevation about 600 feet.

Thinking it should be around 170/175 mains, getting colder here and am going to start with 175/180
Piltos are 25 now, ran ok but with choke on the idle rose alot, going to 27.5
Air screws and needle clips to be adjusted as needed.

Sound right?
 

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When I was running a somewhat similar setup;

100mm 11:1, stg 2, No airbox, Pro-design single K&N, CT pipe w/ 16 discs, no porting, stock valves @500' of elevation

I ran 180/185 mains, 30 pilots, and CT needles (similar to GYTR and DJ I'm told) on 3rd clip. This was a winter setup where temps ranged from 40 to -20 degrees F. My bike made less power w/o the discs and endcap.
 

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Never tried the 27.5's, jumped from 25 to 30 to keep idle up and starting easier in the cold.

My bike always seemed to be happier with bigger jets than I should have been using, the pilots here is one of those instances.

As for the cap/discs my bike lost a lot of midrange with the open end w/o cap and didn't feel any stronger up top.
 
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