Mods & Jets & Clicks
 

(NOTE: The Mods & Jets spreadsheet has been updated with a new page forsuspension settings ... therefore "Mods & Jets & Clicks"!)

Hey guys, I know this stuff is plastered all over this forum, but I'm compiling a spreadsheet of everyone's performance mods and jetting configurations. You can download the Excel spreadsheet using the following link:

[align=center]Kawasaki KLX250s Mods & Jets.xls
Kawasaki KLX250s Mods & Jets.pdf
[/align][align=center]Last Updated: 2007-04-13[/align][align=center][/align][align=center](NOTE: The Suspension page is a work in progress. Expect more changes in the next couple weeks/months)[/align]
I would like to include everyone's configuration regarding performance related modifications, and how well you feel those mods have affected your performance. I figure that between us all, we've done (and will do) everything possible to bend this bike out of shape from its stock configuration, and given the variety of modifications, we probably have a good representation of all the different combinations.

Using this table as a reference, when someone wants to do something to their bike and isn't quite sure where their jetting should be, they can take a look and find the closest configuration to what they want, know what jetting has worked, and know what kind of performance to expect.

I know the performance ratings are going to be pretty subjective (One man's "Good" is another man's "Freakin' Rocks", etc.), but until someone figures a way for all of us to dyno our bikes ... this is better than nothing, right?

So here's what's in the spreadsheet so far:

CONFIGS & JETTING

Configuration:
Bike / Rider - <Your name here>
Elevation - How high are you where you ride? (That's "where", not "when"!)
Date - Track your configuration changes over time (I know, we're all addicted to this. Just admit it and get on with it!)

Intake:
Airbox - What kind of snorkle setup do you have, or did you cut the airbox lid, or even remove it completely?
Filter - Stock or aftermarket air filter. Include a brand & part number if its not stock.

Exhaust: (This section is split in 2 for people that use the OEM or KLX300 head-pipe with a slip-on)
Head Pipe - What kind of head pipe do you have?
Muffler - What kind of muffler or silencer do you have? (If you installed a complete system, just put the same answer in twice.)

Drive Train:
Front - # teeth on the countershaft sprocket (Brand & Part #'s please!)
Rear - # teeth on the rear wheel sprocket (Again, brand & part #'s please!)

Carb Settings:
Pilot Jet - What size pilot are you running?
Main Jet - What size main jet are you running?
Needle - What needle are you using? If part of a DynoJet kit, which kit?
Needle Setting - If the needle is adjustable, which slot from the top is the clip in? Any spacers?
Fuel/Air Mixture - How many turns open is the screw set to. (How many turns open initially?)
Slide Mod - Did you enlarge the hole in the slide? If so, what drill size?

Performace:
Lean/Rich - How do you think your fuel / air ratio stacks up with this configuration (Scale: Too Lean, Lean, Slightly Lean, Perfect, Slightly Rich, Rich, or Too Rich)
Low End - How would you rate the low end "pull"? (Scale: Problems, Bad, Poor, Fair, Good, Excellent, or Freakin' Rocks!)
Mid Range - How would you rate the mid-range "Pull" (Same scale as above)
High End - How would you rate the top-end to redline "Pull" (Same scale as above)
Starting - How easy is the engine to start? How long do you need the choke on?
Idle - How is your idle? Smooth/Rough? How is it cold? How is it after it's warmed up?
Acceleration - How's the acceleration (Fast, Smooth, uneven, Back fires, Hesitates, Fades, etc.)
Deceleration - How's the decelleration (Fast, Smooth, Popping Exhaust, etc.)

Additional Mods:
Crank Case - What kind of ventilation mods have you done, if any?
Smog - Do you have the stock smog controls in place (Yes / No)?
Cylinder - Have you stuck with the stock cylinder displacement, or is your bike overbored? If overbored, what's your displacement?
Fuel System - Any additional mods to the fuel system
Ignition - Any additional mods to the ignition system (different plug or coil, aftermarket CDI, etc.)?

Other:
Comments - Nice weather we're having today, isn't it?

SUSPENSION

Configuration:
Bike / Rider - <Your name here>
Weight- Nothing personal, but its at the heart of the matter
Date - Track your configuration changes over time

(NOTE: Suspension settings are very dependent on terrain and riding style ... more attributes need to be added here to capture that info!!!)

Front:
Spring - What springs are you using? (Unless you've changed them, your using the "Stock" springs)
Clicks - How many "clicks" open from fully closed?
Feel - Totally subjective and depends on both where and how you ride.

Back:
Spring - What springs are you using? (Unless you've changed them, your using the "Stock" springs)
Comp - How many "clicks" open from fully closed?
Rebound - How many "clicks" open from fully closed?
Sag - Measurements of bike height that reflect rider weight, spring rate, and preload (More work needed here)

Additional Mods:
Lowering- What kind oflowing mods have you done, if any?

Other:
Comments - Hey, that Pastrana is something else, isn't he?


To help make this easier, you can quote this post, or copy the section below, and fill in your information here:

===[ Start Copy Here ]===

CONFIGS & JETTING

Configuration:
Bike / Rider -
Elevation -
Date -

Intake:
Airbox -
Filter -

Exhaust:
Head Pipe -
Muffler -

Drive Train:
Front -
Rear -

Carb Settings:
Pilot Jet -
Main Jet -
Needle -
Needle Setting -
Fuel/Air Mixture -
Slide Mod -

Performace:
Lean/Rich - (Too Lean, Lean, Slightly Lean, Perfect, Slightly Rich, Rich, or Too Rich)
Low End - (Problems, Bad, Poor, Fair, Good, Excellent)
Mid Range - (Problems, Bad, Poor, Fair, Good, Excellent)
High End - (Problems, Bad, Poor, Fair, Good, Excellent)
Starting -
Idle -
Acceleration -
Deceleration -

Additional Mods:
Crank Case -
Smog - (Yes, No)
Cylinder -
Fuel System -
Ignition -

Other:
Comments -

SUSPENSION

Configuration:
Bike / Rider -
Weight-
Date -

Front:
Spring -
Clicks -
Feel - (Soft, squishy, firm, hard, just right, stiff, not right ... what?!??)

Back:
Spring -
Comp -
Rebound -
Sag -
Feel-

Additional Mods:
Lowering-

Other:
Comments -


===[ End Copy Here ]===

If yo

RE: Mods & Jets
 

Hey YYY.Guy this a Great Idea :D I thank you for spending the time and to come up with this idea...... I think it will be a Great Addition to this Forum which I think is getting really BIG Again A BIG THANKS FOR YOUR TIME

[sm=goodidea.gif]

[sm=thanx.gif]

RE: Mods & Jets
 

So you want each of us to post what we have done to our bike in this thread ? What would be the easiest for you?:eek:

RE: Mods & Jets
 

Hey, no problem! Who knows, maybe someone could do something similar for height adjustments and suspension settings?


Probably the easiest thing for people to do is to quote the bottom portion of the original post, then edit it with your information. Or you can PM me ... makes no difference.

Mike

RE: Mods & Jets
 

Great idea, YYY.GUY. Here's mine.

EDIT: add elevation

RE: Mods & Jets
 

RE: Mods & Jets
 

im not going to do this now as come another month when i park it for the winter its tear down and mod like crazy time.. if this thread is still active once im done for the winter i will fill out one tho. the only thing i see that can be added to the form is "Home Elevation" for the carb settings section or maybe somewhere else in the form... this will possibly give people dead on settings for their carb setups if the person is located at the same elevation and has their bike setup spot on. btw.. great idea!!

RE: Mods & Jets
 

Great suggestion, jsac, thanks!

Both the original post and the spreadsheet have been updated with a place for "Elevation". Will add a link to download the spreadsheet shortly!

Mike

RE: Mods & Jets
 

Great idea YYY.GUY heres mine

Configuration:
Bike / Rider - Aussie KLX250R / MaverickAus / Garry
Elevation - 0
Date - 09/07/06

Intake:
Airbox - OEM
Filter - OEM

Exhaust:
Head Pipe - OEM
Muffler - OEM

Drive Train:
Front - OEM
Rear - OEM

Carb Settings:
Pilot Jet - OEM
Main Jet - OEM
Needle - OEM
Needle Setting - OEM
Fuel/Air Mixture - OEM
Slide Mod - OEM

Performace:
Lean/Rich - Perfect
Low End - Excellent
Mid Range - Excellent
High End - Excellent
Starting - Easy
Idle - Excellent
Acceleration - Good
Deceleration - Somtimes a little popping

Additional Mods:
Crank Case - OEM
Smog - No
Cylinder - OEM
Fuel System - OEM
Ignition - OEM

Other:
Comments -
Love the bike, will fit the 300 kit after warrenty runs out (Jan 2007), Have Barkbusters, CRD bashplate, 17" Supermoto rims with Dunlop GT401, Kenda 772 on 18" rear rim. Yet to be fitted, different headlight / faceplate, Renthal handlebars, Vapor (on order)

Thanks [8D]

Garry

RE: Mods & Jets
 

Configuration:
Bike / Rider - Taran (FiveOMaster)
Elevation - 6200
Date - 9-7-06

Intake:
Airbox - Lid off
Filter - OEM

Exhaust:
Head Pipe - OEM
Muffler - OEM with 1st baffle drilled 1/2" and second baffle drilled with 3 3/16" holes

Drive Train:
Front - 13t
Rear - OEM

Carb Settings:
Pilot Jet - OEM (35)
Main Jet - 120
Needle - N1TC
Needle Setting - 2nd from top
Fuel/Air Mixture - 2.5
Slide Mod - 7/64"

Performace:
Lean/Rich - Slightly Lean
Low End -Good
Mid Range -Goood
High End -Good
Starting - not to hard, choke for about 30 seconds
Idle - good
Acceleration - good
Deceleration - good some popping but not to bad

Additional Mods:
Crank Case - 3/8"
Smog - (Yes, No) no
Cylinder - OEM
Fuel System -OEM
Ignition -OEM

Other:
Comments -