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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.


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  #21  
Old 04-21-2008, 04:29 AM
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Bearman Bearman is offline
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Location: Victoria, Australia
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Bike year & model = 2003 EC200
Temperature (degF) = 68 - 100
Elevation (feet) = 1300 – 2500 ( roughly varying )
Main jet = 178
Pilot jet = 48
Needle & notch = N3HJ - 2
Air screw setting = 2 3/4
Throttle valve/slide = 5

Results: I use this setting all year round. I have found that it is very smooth from bottom to top. Air screw was 3 ¼, but wouldn’t idle when warm, now at 2 3/4. I’m considering moving needle to middle notch for better bottom end. Am using Motul 800 mixed at 50:1.


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'03 GasGas EC200 My bike
'89 Yamaha TT250 R.I.P - Lost in the Black Saturday Fires
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  #22  
Old 05-01-2008, 07:35 PM
gassman gassman is offline
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08 ec 300...had the bog off idle..was cured with a cck needle#3 position,178 main,42 pilot..2 turns out on air screw..runs perfect..thanks
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  #23  
Old 05-01-2008, 08:58 PM
skid jackson skid jackson is offline
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what elevation are you running at??
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  #24  
Old 05-16-2008, 09:42 PM
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widebear widebear is offline
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2001 ec-300 with motocross ign and RB style head mod
Temperature (degF) = 40-90
Elevation (feet) = 2200- 5800
Main jet = 165 messico & doma pipe, 170 fmf pipe




Pilot jet = 35
Needle & notch = Kawi N3YF #3 notch
Air screw setting = .75 turn out
Throttle valve/slide = #9

Results. Very crisp throughout the rpm range, pulls hard with instant throttle response and good high rpm power , Caveat , would not ride in sand with this small a main jet, 10 minute road section at W.O.T. with no problems and no overheating

Last edited by widebear; 05-18-2008 at 10:20 PM.
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  #25  
Old 05-19-2008, 11:33 AM
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eff eff is offline
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Bike year & model = 2004 DE250
Temperature (degF) = 50 - 70 degF
Elevation (feet) = Sea level to 1000 ft
Main jet = 180
Pilot jet = 45
Needle & notch = LTR -0 #3
Air screw setting = 1-1.5 turns out
Throttle valve/slide = #7

Results:
Much cleaner jetting that my prior post. Bike runs strong and smooth in conjunction w/ .45mm base gasket on my cylinder.
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  #26  
Old 05-19-2008, 11:59 AM
GG27 GG27 is offline
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Default GG27 revised settings

Bike year & model =EC 250 2008
Temperature (degF) =60 TO 85
Elevation (feet) =0 TO 1000
Main jet =182
Pilot jet =45
Needle & notch =LTR - 0 #3
Air screw setting =1 to 1 1/2
Throttle valve/slide =#8

Results:After changing slide to a #8 I raised the pilot from a 42 to a 45 and bike runs strong throughout with no bogging at all. I changed silencer from the standard banana to the MC and hits stronger with better throttle response from mid to top, signs off a little quicker. Now I can tell the difference with the dual map switch. I prefer the standard long silencer, it gives a broader spread for overall use, MC silencer is good for the motocross track or rain setting for tight woods.
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EC250 2008 Skid plate, rad braces, Fork bleeders
Drz 400 Motard '03 (full spec)

Yz 250 '06, KTM exc 250 '05, exc 250 '04, exc 250 '02
WRF250 '02, KDX 220 '98, DT200R '93 all sold
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  #27  
Old 07-12-2008, 03:19 PM
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Radbuster Radbuster is offline
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Bike year & model = EC300 '07
Temperature (degF) = 70
Elevation (feet) = 50 / about 1010mbar / 70% rel. humidity
Main jet = 175
Pilot jet = 42
Needle & notch = LTR #3
Air screw setting = 1.5 turns
Throttle valve/slide = #7

FMF Gnarly, otherwise stock.

Results: Very happy. Idles good, clean & strong through whole range, average about 4 liters/hour at (my slow) race pace, no spooge, black threads on sparky but tan electrode.

Peculiar: After starting cold with shortest possible use of choke, I allways need to run it hard through the gears to clear it out. After that it can run at really slow speed for a long while without loading up.
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  #28  
Old 07-29-2008, 09:56 PM
AZRickD AZRickD is offline
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Bike year & model = 2005 DE250 (11oz FWWeight)

Stock reeds. LTR needle with clip on position 2. LTR PV cover. Stock slide.

Winter in Phoenix:

Temperature (degF) = 40 - 80
Elevation (feet) = 1100 – 2500
Main jet = 178
Pilot jet = 45
Needle & notch = LTR - 2
Air screw setting = 2 1/2
Throttle valve/slide = stock


Summer in Phoenix:

Temperature (degF) = 80 - 110
Elevation (feet) = 1100 – 2500
Main jet = 172
Pilot jet = 42
Air screw setting = 1 1/2


Summer in Flagstaff:

Temperature (degF) = 75 - 85
Elevation (feet) = 7,000 – 9500
Main jet = 165 (I gave the 168 a try -- almost but not quite lean enough -- a little burble on top. 165 did the trick and was particularly crisp if I dropped the needle to the first clip).
Pilot jet = 40
Air screw setting = 2 1/2

Last edited by AZRickD; 10-04-2009 at 08:50 PM.
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  #29  
Old 08-26-2008, 02:13 PM
ferguscawley ferguscawley is offline
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Location: Cork, Ireland
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Bike year & model = 2006 EC 300
Temperature (degF) = 50
Elevation (feet) = 0 - 1000
Location = Cork, Ireland
Main jet = 178
Pilot jet = 42
Needle & notch = CCK clip 3
Air screw setting = 1.5 turns
Throttle valve/slide = No. 7 slide

Results:
-------------------------------------------------------------------------
Riding style: slow technical trails and fast open paths
Premix: Using RockOil Syn 2 race mixed about 45:1.

Performance: I thought this bike was good with the N1EF needle but the CCK has made this bike one I want to keep for life !! Awesome midrange now.
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  #30  
Old 08-26-2008, 09:32 PM
skid jackson skid jackson is offline
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fergus ....I've got an 06 300 with almost identical set up ....
how is your gas mileage?? Mine sucks. I ride mostly tight technical stuff 1st and 2nd gear.
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