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


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  #151  
Old 08-12-2012, 05:03 AM
hannesd hannesd is offline
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Location: belgium,europe
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Default Ec 200 2001

i got a CCL needle with clip pos 2 (from top) 45 PJ and 180 MJ.
temp 5-20 Celcius and 0-100 m elevation (sealevel, belgium)
idles pretty wel and runs very smooth, very well controlable.
starts 1st kick when warm, cold takes max 3 kicks.
absolutely pleased with this setup.
no head mods have been done (yet) just might use a thinner base gasket to up compression a bit next time if i shoud (ever) swop piston

EDIT : so now i've put a new piston in it ,and left the base gasket OUT (more compression, better squish from 1.82mm to 1.32), i used permatex (liquid gasket).
after some rides (0-5 degr Celcius) it felt too rich off idle, so i swapped the 45PJ for a 42 and that seemed to make a huge difference. much more crisp engine response thrueout the revs!

RE-EDIT : since it got a little warmer, about 10-15 deg Celcius, i put an even smaller PJ in, went to 40.
yet even better idling.
just have quite some spooge, does this mean i'm either running too rich on the main (180) or i'm not revving it enough (no need to for what i do).
might try 178 MJ... any thoughts on the spooge?



Last edited by hannesd; 05-31-2013 at 04:19 PM.
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  #152  
Old 09-05-2012, 06:51 AM
n_green n_green is offline
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Bike year & model = 2011 EC300E fitted with 36mm carb and reed block spacer
Temperature (degF) = 60 - 70 F, 0% humidity?
Elevation (feet) = 1000f, or 150-400m
Main jet = 165
Pilot jet = 42
Needle & notch =NEDW #2
Air screw setting = 1.5 turns out
Throttle valve/slide = 6.5 notched

Results:
Good throttle response throughout rev range. Smooth transition between circuits. Pulls hard off the bottom through mid range to top end. Slight knock/pinging and feels slightly lean around 1/8 to 1/4 throttle. Slightly snappy right off the bottom too and on occasion would hang slightly just above idle for a second or two.
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  #153  
Old 09-05-2012, 06:54 AM
n_green n_green is offline
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Bike year & model = 2011 EC300E fitted with 36mm carb and reed block spacer
Temperature (degF) = 60 - 70 F, 0% humidity?
Elevation (feet) = 3000f, or 900-1200m
Main jet = 172
Pilot jet = 40
Needle & notch =JD Blue #3
Air screw setting = 2.25 turns out
Throttle valve/slide = 6.5 notched

Results:
Great torque off the bottom. Pulls from right down low, smooth transition through all circuits. Burbles ever so slightly just off idle. Slightly lean? At approx 1/4 throttle not too noticeable. Pulled hard from bottom through mid but seemed to die up top, would rev out but not make power. May try going one step leaner on the pilot and also one step leaner on the main.


Edit:

I went one step leaner (38) on the pilot, didn't like it, lost a lot of the torque and had trouble getting it to idle nicely so I've gone back to the 40.

Went one step leaner (170), has made a noticeable improvement to the top end though I still think I could go one step leaner again. I'll leave it alone for now though as I'm hapy enough with it for now.

Edit again:

On the weekends ride (same altitude though about 5 deg / 10 f cooler) was hitting reserve at 70k's using jetting of 40p, JD Blue #3, 170m. Also the slightly lean feeling I believed I had at 1/4 was actually rich. Now I've installed the Motion Pro T3 throttle cable I dropped the pilot to a 38 and wound the as in to between 1.5 and 2 turns out, dropped to a 168 main. Made no noticeable difference to the bottom, as in still an awesome torquey unstallable tractor but the mid and top end did improve noticeably. I then got 75k's to reserve.
Still felt slightly rich so I raised the clip to #2. Really really happy with this jetting now, I've finally woken the top end up and improved the mid range in the process, can now loft the front wheel as high as I want from any throttle position in 3rd gear and the power delivery is nice and linear without any burbling, surging, knocking etc. Occasional pipe bang once in a blue moon on steep down hills as the bike comes back down to idle speed in 1st gear, but only once in a blue moon.

Last edited by n_green; 09-16-2012 at 05:18 PM.
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  #154  
Old 11-10-2012, 04:37 AM
n_green n_green is offline
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Bike year & model = 2011 EC300E fitted with 36mm carb and reed block spacer and fitted with modified head (squish - 1.28mm, compression ratio - 12.7:1)
Temperature (degC) = 20 degC, 100% humidity (light rain all day)
Elevation (feet) = 1000f, or 200 -500m
Main jet = 168
Pilot jet = 38
Needle & notch =JD Blue #3
Air screw setting = 1.5 turns out
Throttle valve/slide = 6.5 notched

Results:
Great torque off the bottom. Pulls from right down low below stalling point. Pulls strong and smooth through all circuits. Rich burble between 1/8 and 1/4 throttle. Pulled hard from bottom through mid and then transitioned noticeably but not too strongly onto the pipe. May indicate going from rich through the middle into crisp up top. May try and drop the needle to clip #2.
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  #155  
Old 11-26-2012, 04:05 AM
kiwia kiwia is offline
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Bike year & model = 300 2010. (Spain)
Temperature (degF) = 5 -15?.
Elevation (feet) = 900m
Main jet = 178
Pilot jet = 48
Needle & notch = NOZG 3#.
Air screw setting = 2,5
Throttle valve/slide =

Results: After checking many posibilities, this is the best for me, I have tried with N3CJ, NECJ, N2ZW, N3CH, N1EG, N1EF AND NOZG.

With a 48 as pilot jet bike runs very well, but you can not use it with all needles, only N3CJ, NECJ or NOZG.
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  #156  
Old 11-29-2012, 07:12 AM
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mariogt mariogt is offline
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Bike year & model = 300 2012. (Guillaume Replica), 38 carb
Temperature (deg C) = 20 - 30.
Elevation (mts) = 200 - 1000 mts
Main jet = 178
Pilot jet = 42
Needle & notch = N3CJ 3#.
Air screw setting = 1,5 - 2,0
Throttle valve/slide = 7

With this jetting my bike is very, very crisp, much more powerful than with the stock needles, perhaps to much for some people but if you are a rider with good abilities then this is your ideal setting. I don't know the gas mileage with this setting but I will be testing it in my next ride.

Last edited by mariogt; 11-29-2012 at 12:00 PM.
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  #157  
Old 12-02-2012, 04:50 PM
n_green n_green is offline
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Bike year & model = 2011 EC300E fitted with 36mm carb and reed block spacer and fitted with modified head (squish - 1.28mm, compression ratio - 12.7:1)
Temperature (degC) = 27 degC,
30%? humidity
Elevation (feet) = 1000f, or 200 -500m
Main jet = 168
Pilot jet = 40
Needle & notch =JD Red #3
Air screw setting = 1.25 turns out
Throttle valve/slide = 6.5 notched

Results:
Very snappy power. Crisp throughout rev range. Torque suffers down low and as a result the clutch needs to be abused a lot more down low in the revs to keep it alive. More prone to stalling compared with the blue needle.
I also tried a 42 pilot with air screw at 2 turns out and the torque and resistance to stalling improved, though still required a lot of use of the clutch and was unimpressive when compared to the blue needle.
Through the middle and top it screams, may be slightly lean on top which moving the needle to clip #4 would probably fix.
With the 42 pilot it upset the middle a little bit in that the power was doughy until about 1/3 throttle then it cleared its throat and screamed again.

In short this isn't a needle I'd use for technical riding or singletrack, it's not smooth enough and too much hard work getting up snotty technical hills the blue needle would simply walk up.

Fuel economy averaged about 1l per 10k. Done several rides and hit 75k's without needing reserve.
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  #158  
Old 12-15-2012, 05:25 AM
n_green n_green is offline
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Bike year & model = 2011 EC300E fitted with 36mm x 39mm oval bore modified Keihin PWK ASII carb and reed block spacer and fitted with modified head (squish - 1.28mm, compression ratio - 12.7:1)
Temperature (degC) = 25 degC,
50%? humidity
Elevation (feet) = 3000f, or 1000m -1400m
Main jet = 170
Pilot jet = 38
Needle & notch =JD Blue #3
Air screw setting = 1.75 turns out
Throttle valve/slide = 6.5 notched

Results:
This was my first run using the oval bore carb. I went 1 step richer on the main however left my 'preferred' JD Blue jetting the same apart from that.

All I can say is wow, the carb has really woken the motor up, it has even more torque off the bottom now, and I found myself lugging 1 gear higher most of the day, even attempting and most of the time making steep 1st gear hills in 2nd. This is with 13/48 gearing. It refused to stall and I rarely had to use/abuse the clutch at all.

I feel this jetting is rich throughout and may be slightly on the rich side at WOT. From off idle the bike pulled hard regardless of gear, it became doughy through the mid but still pulled harder then it ever has before and then went ballistic through the top end. It had to wind itself up though it wasn't crisp and I found just snapping the throttle open from low revs wouldn't bring it into band or loft the front.

I took a spare 1.5l of fuel with me today, glad I did. I used 10.6l in 80k's
Bearing in mind I was at 1200m asl most of the day so it would have been running rich anyway with my old settings. I'll try leaning off the main to a 168 and then play with the clip position to fine tune. Hopefully that will get me back into decent economy territory.
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  #159  
Old 01-10-2013, 09:27 AM
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bkwdc bkwdc is offline
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-------------------------------------------------------------------------
Bike year & model = 2011 EC300 Six Days
Temperature (degF) = 65
Elevation (feet) = 500
Main jet = 172
Pilot jet = 40
Needle & notch = NEDW 1
Air screw setting = 2.0
Throttle valve/slide = 6.5

Results: Very clean and smooth. No MX type mid hit. Very smooth = lots of traction.

Last edited by bkwdc; 04-26-2013 at 08:30 PM.
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  #160  
Old 01-21-2013, 03:23 PM
bnb bnb is offline
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Location: kamloops bc can.
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Bike year & model =2001 ec300 new pwk 38 carb
Temperature (degF) =50 - 90
Elevation (feet) =1500' - 4500'
Main jet =168
Pilot jet =38
Needle & notch =cck #3
Air screw setting =1 + 1/8
Throttle valve/slide =8mm slide cut

Results:A used bike new to me. After much jetting frustration, I concluded that the needle jet was worn out.
The only part in the carb that wears out and you can't replace it. New carb!
I'm looking for best mixture delivery between 0 and 3/8 throttle. With this receipe,
the power generated as soon as you crack the throttle off its stop, is awsome.
Tire shredding power from sub-idle in any gear, with smooth hard pull to good
over rev. The cck needle didn't work well with the stock 7mm slide, but nothing i tried
did. Idle, very sensitive to temp and altitude changes. Usually 3lt fuel consumption
for an average 2 1/2 hr technical ride. This is a work in progress, but theses results
seem worth reporting. Any tips, hints, or critizisims, will be welcome.
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