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


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  #291  
Old 03-24-2019, 06:56 PM
ReaptheHeat ReaptheHeat is offline
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2018 XC 250

Altitude: 6000-9000 ft

Temp: 55 F

Pilot: 38

AS: 1.5

Needle: Stock @ #2

Main: 168

Little bit of spooge after a 1.5 hour race today, mostly on the needle. When I am WFO, feels like it never tops out. Is this more of a lean or rich symptom?

Otherwise, I might throw in the JD red or Blue to see how it feels.


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  #292  
Old 04-11-2019, 06:54 PM
ReaptheHeat ReaptheHeat is offline
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Originally Posted by ReaptheHeat View Post
2018 XC 250

Altitude: 6000-9000 ft

Temp: 55 F

Pilot: 38

AS: 1.5

Needle: Stock @ #2

Main: 168

Little bit of spooge after a 1.5 hour race today, mostly on the needle. When I am WFO, feels like it never tops out.

Otherwise, I might throw in the JD red or Blue to see how it feels.

Rode at 5000 ft 70 F.

JD Blue #2, 38 PJ, 170 Main. Excellent feel, could probably run a 168 main. This is the best I have gotten either my 2012 or 2018 jetted. Too bad I rarely ride this low in elevation. Zero spooge.

The kit rec. 42 PJ, Red #3, and 168 Main for 5000 to 8000 ft. I found the PJ to load up too easily for lugging, then feels lean down low with the smaller 1/4 needle taper, then opens up to a nice powerband.

Is there a needle one step leaner than the JD blue with the same taper profile?
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  #293  
Old 06-26-2019, 05:38 PM
Jinx_pt Jinx_pt is offline
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Location: Portugal
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Default Gasgas 300 R 2013

Hello!

So, after reading a lot in the forum, testing with the bike and see how it feels, jetting is like this.

AS2 carburetor
Needle & notch =NECW #2
Main jet = 172
Pilot jet = 42
Air screw setting = 2 1/4
Throttle valve:7
Fuel: 95 oct (can use 98 if better for jetting)
Oil:MOTOREX CROSS POWER 2T at 1.5%
Elevation: Sea level to 500m
Temp C?: Summer 20 to 30 / Winter 0 to 15
Riding type: Hard enduro single track and rocky creeks.


I had problems with fouling plugs, just the usual with gasgas factory settings so i had to deal with it. Adjust float level, clean the air filter, carb, pipe and muffler. After all that, changed stock needle
Bike goes a lot better, smooth but with power, starts easy even after a crash (before had to try several times) and fuel consumption has improved a lot!!

I just started with jetting, so if the jetting gurus see that any setting is wrong or could be a bit better please tell me!!

Thanks
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  #294  
Old 06-26-2019, 05:52 PM
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Davehuge Davehuge is offline
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Location: English but now based in South of France.
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Originally Posted by Jinx_pt View Post
I just started with jetting, so if the jetting gurus see that any setting is wrong or could be a bit better please tell me!!

Thanks
Hi, I don't call myself an expert but the only thing I could suggest is trying a smaller pilot as your Air Screw is 2 1/4 turns out. Of course, if it's running nicely then why bother?

My jetting is pretty similar to yours, although mine is a 2004 EC300 with the AS1 carburetor.

All the best, Dave.

P.S. I love Portugal, where are you in Portugal?
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  #295  
Old 06-26-2019, 06:10 PM
Jinx_pt Jinx_pt is offline
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Originally Posted by Davehuge View Post
Hi, I don't call myself an expert but the only thing I could suggest is trying a smaller pilot as your Air Screw is 2 1/4 turns out. Of course, if it's running nicely then why bother?

My jetting is pretty similar to yours, although mine is a 2004 EC300 with the AS1 carburetor.

All the best, Dave.

P.S. I love Portugal, where are you in Portugal?
Yes, i was thinking of going with a 40PJ, but if i can manage with the 42PJ during summer, (since i dont ride a lot in the summer, too damm hot ) later in winter that air screw will be close a little.

I live close to Porto and even closer to Lagares, home of one of the best hard enduro events, the Extreme XL Lagares.

Thanks for your replay Dave.
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  #296  
Old 06-26-2019, 06:12 PM
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Davehuge Davehuge is offline
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Sounds like a good idea.

Have fun!

All the best, Dave.
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