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wykyd z400
09-21-2006, 04:23 PM
I seen something like this on another forum. I think It will be beneficial to people new to jetting(such as myself). They can look to see if anyone is running a similar set-up, in a similar altitude, etc; to help point them in the right direction, and give them a good idea on where to start. Maybe this will work out, maybe not, but its worth a try.

Each post should contain ONLY the following information:

Carb Type: Mikuni, Keihin (PJ, A/S, etc.) (what bore is the carb?)

Main Jet: Please state what type of jets (Mikuni/Dynojet, etc.)

Slow Jet:

AirScrew (number of turns out):

Needle (what groove is the clip in, Brand, etc):

Airbox: List any mods to include filter

Pipe: What brand

Engine Displacement: What size is it (250-265 etc.) and who's kit (ESR,etc). Also list compression ratio.

Altitude: where you normally ride

Are you happy with the setup: Yes or No followed by breif description (this is the only babbling area...and it's only for comments on your setup).

Aughtx
09-21-2006, 05:17 PM
I think it would be very helpful. It would give others a better starting point and beats searching the forum for similar setups.

Could you post or pm me the database from the other forum? I would like to take a look at how they have it setup.

CorvetteZ06
09-21-2006, 07:39 PM
that would be great!

300excrazy98
09-23-2006, 06:08 PM
i have been looking for somehtin like this....

250R-Dee
09-24-2006, 03:34 AM
My typical reply to jetting questions:

(1) Check your intake boot for leaks!
(2) Check for cylinder leaks since head has been shaved.
(3) Are the reeds in good condition?
(4) How does your plug look?
(5) If your carb is pissing fuel the float is not set correctly.

Many people say this:
air screw - idle to 1/16 throttle
pilot - 1/16 to 1/4 throttle
needle - 1/4 to 3/4 throttle
main - 3/4 to WOT

BUT the range of the jets actually overlap.

Air screw - off idle to about 1/4 throttle
The air screw meters air to the pilot jet

pilot - 1/8 to 1/2 throttle (changes to pilot affect the needle and main jet settings since it adds adds fuel during the midrange and topend)

needle - 1/8 to 3/4 throttle
an actual needle change will affect 1/8 to 3/4 throttle
clip changes afffect 1/4 to 3/4 throttle

main - 1/2 to full throttle

The attached pic is similar to my ramblings.