Posted 12 June 2006 - 07:19 PM
Well this is the final settings for a flat out ripping no hesitation at any speed machine
PJ 40 (stocker)
Needle on 4th clip
fuel screw adj. to 2-1/4 turns out:
Altitude < 1000 , temps 85 and climbing
By the way I have done all the CCC mods, air box cut, pink wire snipped, R header and Pipe (50.00 ebay) , JD jet kit, hot cam, plus the high comp piston, My favorite mod so far is the Rekluse clutch.
The machine just jumps of the face of jumps and whatever now with just a slight blip of the throttle
Posted 24 June 2006 - 06:10 PM
is there a chart that shows dimemsions of ALL the needle jets?
Posted 26 June 2006 - 09:31 AM
The problem he has encountered is the bike will not idle when it does start it sputters and pops. I have checked the valve adjustment and that is with in specs and while I was into it I removed the carb for cleaning and a re jet. While I am into it should I be looking else where?
Posted 01 July 2006 - 09:02 PM
Pink wire mod: Raises the redline!
Opened the airbox per honda technical
Removed the rear portion of the baffle, cut and spot welded the screen in place. Only for woods riding!!!!
These are my jetting specs:
150 Main Jet
145 Leak jet
Screw 2 1/4 turns out
The bike runs crips and have had no problems. Big difference over stock and is also quieter. I ran the bike with no baffle and it ran great but was a little lound hence the baffle mod. Also the bike starts way easier. Hope this helps, Missle
Posted 04 July 2006 - 03:51 PM
I need some help, the Guys at Honda dealer in Reno Nevada (7000') don't know what to advise me. I ride at 6500' to 7500'
2006 Honda CRF250x / Ca. model, All stock, No mods yet! until I get it dialed in.
bought from dealer in Petaluma CA. (sea level). #40 pilot, #130 main.
Posted 04 July 2006 - 06:03 PM
Red needle in the 4th clip, 155 main, 42 pilot, 2 turns and leak jet # 55
Factory exhaust and air box opened.
The JD instructions say 150 main for 7,000
Posted 06 July 2006 - 11:18 AM
Major bogg. any good advise?
Brad in Lake Tahoe, CA.
Posted 26 July 2006 - 02:52 AM
CCC modded air box
removed (completly) sparky and diffuser
thinking of switchin to a 155 main.
havnt touched needle clip or fuel screw
Posted 07 August 2006 - 08:15 PM
Wisconsin and Michigan riding 650 feet above sea level 70 degrees 50% humidity
Here is my list and I believe you need to do it all to get the best results:
Muzzy Ti pipe with quiet insert and spark arrester
Air box mod (cut off top)
Twin Air billet cage air filter kit (very trick and eliminates the screen plus the filter is flame proof)
45 pilot jet
1.5 to 2 turns on Zip Ty fuel screw
Richen needle 1 groove down
155 main jet
Power now rear blade only
Boysen pump cover
Drill 7 holes 5/8 diameter holes across the top edge of the air box door (drill these from the inside of the door between the two ridges of plastic 1” center to center)
Now you can tune your bike to the altitude or conditions with a simple piece of duct tape. When its hot and humid leave all the holes open and lean out the fuel screw to 1.5 turns out. In nice weather (60-80 degrees 40-60% humidity cover 3 holes with tape and set fuel screw to 1.75 turns out. When its cool out 40-60 degrees and low humidity cover more holes as needed and turn the fuel screw out to 2 turns.
I also installed a 51 tooth rear to smooth out the gear ratio’s a bit. And I installed a Recluse clutch (great product).
The bike is a blast to ride in the woods and you can ride much longer with less rest stops, because the bike is so light and smooth.
For Ice Racing go to a 160 main jet and install Fredette tires and Moto Missile fenders and go have fun. Check out the web site below for more info on ice racing.
Posted 07 August 2006 - 10:05 PM
i hope thats a big typo.
Posted 23 August 2006 - 05:35 PM
Will have this sticky up top so you can add Jetting settings you have for your R or X.
Please keep it to that, no off-side discussions. Want to keep this post for jetting info for folks so they dont have to dig through a bunch of discussion to get to what is working for us and where/how we ride.!
Sea-level to about 2000'
Western Washington tight single track
Temps so far= 50 to mid 90s
Air box lid cut to honda recommended line
Pink wire cut
JD Jetting kit
Red needle, 3d clip from the top
2 full turns on the fuel screw.
PowerNow in carb
Backfire screen still in
Twin air and stock filter with No-Toil filter oil from
Totally Stock Exhaust
Pump gas (92 octane) fresh each ride.
Very happy.....front end comes up with a twist even with my fat butt on it.
Bike loves to run lean I have found out.
what does it do?
Posted 23 August 2006 - 06:16 PM
Posted 13 September 2006 - 10:59 AM
Air box cut open, drilled air box under battery, Exhaust baffle drilled out
Stock Needle clip down 5 from top, 2 more than stock
Air screw out 2 turns
Added a Pro Circuit muffler and Twin Air Kit, so I changed the jetting :
Zip ty out 2 1/4 turns
55 leak Jet
Neddle recommended in the Closed Course Mod 4 down fron top
Added an 05 "R" cam, no change in jetting
Runs great, front wheel comes up on a twist of throttle
Posted 16 October 2006 - 07:27 PM
Posted 16 October 2006 - 08:52 PM
my settings are on the bottom.i ride sea level to about 5000 ft no bog.
after jetting i had to fine tune the air screw.in the end i think thats all it was
the quick shot was probably unnescary. do a search for the AP mod i never did it cause i got rid of my bog before guys started talking about this mod.
Posted 23 October 2006 - 05:27 PM
Posted 28 October 2006 - 10:24 AM
My 05' 250X came with a 140 stock main.. With my JD Jet kit I have upgraded to a 162 I think for winter I should be at a 165.
But I have also cut my airbox removed the air filter screen and removed the diffuser out of the exhaust.
What I havent done yet but am going to do soon is upgrade to a 42 pilot from a 40 and get a 55 leak jet..
also look into doing the AP Pump Mod... then your bog should be all gone..
If you dont want to modify your airbox There are other people on here with settings you can go off
oh yeah im at the same elevation as you
Posted 05 November 2006 - 02:39 PM
(no need to change the leak)
Posted 06 November 2006 - 09:57 AM
I have the Dr.D exhaust, airbox mod, JD jet kit, leakjet kit, power surge, emissions block off and will be installing a hotcams stage 1 cam this week. I am between 1000-3000 ft in SoCal.