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


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  #1  
Old 05-17-2018, 03:03 PM
taylor146 taylor146 is online now
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Default 18 ec300 jetting

Hi all,
Since I've had the latest ignition map the NEDW needle I was using that seemed slightly rich now seems a bit lean up to 1/4 throttle. Would like to know what needle to use , was considering trying the standard needle again. Maybe NEDH?
Thanks
Darren


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Old 05-18-2018, 01:25 AM
fred99999au fred99999au is offline
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I have a Suzuki NECJ in my 18 GP300. Dunno if that helps due to the different head or not.

Need to find a table of needle specs to work out if it is richer or leaner.
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Old 05-18-2018, 03:44 AM
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Jakobi Jakobi is offline
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J diameter is leaner than W. Going to a H may help with your issue, or bumping the pilot up a size might too.

What clip position are you in? Have you tried going richer?
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Old 05-18-2018, 04:21 AM
Doc Brown Doc Brown is offline
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If its lean up to 1/4 changing the needle wouldnt change that. You can try to close the air screw 1/4 turn wise or take next bigger pilot jet as Jakobi suggested.
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Old 05-18-2018, 03:40 PM
Gottsell Gottsell is online now
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I have the same problem with my std ec300. It work fine before the new mapping. Now i cant get it right. Either it goes very rich or When it goes fine it is detonation
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Old 05-18-2018, 08:27 PM
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Motocrotts Motocrotts is offline
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With the new mapping I'm running the standard needle in the 2nd pos, 170MJ and 40PJ. 2500' and 60 - 80 degs F.
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Old 05-19-2018, 03:13 AM
taylor146 taylor146 is online now
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Hi all thanks for your replies.
Had an interesting conversation with a guy here in the UK who looks after the team bikes for gasgas uk. He said they also tried all sorts of different needle's before the map update , but now runs the standard needle and says it's spot on. He said they have been feeding some input back to the factory and from what he's heard they have advanced the ignition curve down low and retarded it further up . So will give the standard needle a try again and see how it is.
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Old 05-20-2018, 10:48 PM
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chunkysoup chunkysoup is offline
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I went back to the stock needle after the remap and it ran way better.
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2018 GASGAS 300XC
2011 GASGAS 300EC
1981 CR250r
1999 Excelsior Henderson Super X
2003 FZ1
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Old 05-21-2018, 02:04 AM
fred99999au fred99999au is offline
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What is the stock needle?
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Old 05-21-2018, 09:46 AM
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chunkysoup chunkysoup is offline
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Quote:
Originally Posted by fred99999au View Post
What is the stock needle?
The one that came in the bike from the factory the N1EF needle
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