jetting to this ?

bobthedog · Dec 10, 2002

Hi chaps...
Going to change my carb to
With a performance pipe/expansion chamber, air box mods , the factory or after-market silencer and the stock 33mm carburetor run a 42 pilot, the stock R1173L jet needle in the second from the top clip position, a 145/148 main jet and fine tune the pilot circuit using the air screw:
p.s. should add that I'm adding Hy tech race reeds also.

1. it states "it's a good starting point" on the website.. has anyone got any experience or feed back?

2. How do I fine tune with the air screw ? please give simple advice !

Jetting to me is an engima !

Cheers
WELSHMAN

bobthedog · Dec 10, 2002

It's a 220 02 bike

Cheers

canyncarvr · Dec 11, 2002

Read a few paragraphs above where you got the posted info.

I'm assuming a few things.

1. Your first post is word for word from CDave's site. You don't say, but that's where it likely came from (credit is good when using someone else's words, copyright or not)

2. So...from just above that point, you will also read....

Once you're comfortable you have an appropriate pilot jet installed you want to fine turn the circuit using the air screw. Starting with the air screw 0.5 turns out adjust the screw an 1/8 of a turn at a time until you’ve obtained the best possible throttle response between idle and 1/4 throttle. Continue to adjust the air screw until the engine’s throttle response off idle is clean with no hesitation or bogging. You can test the final results using the same method as you did for checking the jet needle this time riding in 2nd or 3rd gear at 1/4 throttle. Remember this is only a ball park indicator your goal here is to obtain the best possible throttle response not a perfect plug reading.

And that's as simple as it gets. ;)

That from CDave's site:
http://justkdx.dirtrider.net

<tech tips><carb tuning>

sledman · Dec 11, 2002

'03 220, P.C. pipe, CarbonTech reeds, air box lid removed, 45 pilot, A/S .5 out, stock needle w/clip/#2, 145 main. 3500 to 4500 altitude, this time of year, 35 to 45 degrees temp this time of year. Runs a tad rich, which I prefer. Let it snow, let it snow, let it snow.......

bobthedog · Dec 11, 2002

Thanks for the help

Its cold in England today.

jetting to this ?

bobthedog

bobthedog

canyncarvr

sledman

bobthedog

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