CPI jetting on stock carbs

[Snopczynski]

Im putting a bike together with the following.

 

Stock carbs with pod filters

cpi inframe small bores.

PD coolhead with 20cc domes

advance timing +4 degrees

Lightened flywheel

Boyesen pro series reeds on stock cages

 

Elevation 0-700 feet riding, sand dunes, and pavement.

 

 

I was thinking of starting at about 310 mains. Anyone have a better suggestion for where to start, what needle clip position to use, and pilot jet/ air screw settings? I usually mess with TM's and pwk's, so I am sure there are a few on here that will have a better idea of where this thing needs to be.

[wacko2000]

I ran that setup with T5's and a airbox.

I was perfect at 310, I think you will need to be richer.

Im no jetting expert but i would say 330 27.5 pilot

I have cpi's now and they seem to like a bigger pilot than the T5's

good luck

[shee4speed]

I was running stock carbs,pods, with Shearers.Dune port though. I had 360 mains in them.I prob.could have ran 340's.It was pretty rich.

[Titan up]

I think 310 mains is a little small.

 

My old set up with unported stock cylinders with ALL the bolt on's, pods and t-6's, I was at 340 mains and 4th clip down from top.

 

300-1200 elev.

[magz]

mods in sig....

[ToomeySheeLE]

I think you'll end up at 310's with the pods.. I was running an airbox with the exact setup and was in the 290 range.. still plenty safe... I was running the longer toomey needles, middle clip, and 27.5 pilot.

[firebanshee]

I would start at 340s but i think you will end up at 330s, needle in the middle and 27.5 pilot.

[Frogger]

I'd go would go with what firebanshee said. I ran mine at 300 with the same bolt on's at 5000ft.

[Wildcardracing]

330-340 mains, 27.5 pilot , needle on middle clip would be a good place to start. 310's will be way lean, you may end up as low as 320's depending on temp and humidity.