Rieju & GasGas Legacy Riders Club Forum  

Go Back   Rieju & GasGas Legacy Riders Club Forum > GasGas Enduro Technical Forums > Enduro Intake/Carburetion - 2 stroke

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


Reply
 
Thread Tools Display Modes
  #1  
Old 08-06-2009, 08:36 AM
fabulous furry fabulous furry is offline
Member
 
Join Date: Aug 2009
Location: Grenada, Caribbean
Posts: 41
Default jetting for new 300 racing 2010

i just received a new 300 racing 2010 which is actually a 2009 model out of the box but unfortunately came with the street legal gizmos that i removed but found out that the carburation feels limited my 250 EC has twice the power !.can anybody help me with the main jet and idle jet for sea level hot climate ?


Reply With Quote


  #2  
Old 08-06-2009, 09:09 AM
bondo bondo is offline
Senior Member
 
Join Date: Oct 2007
Location: Birmingham, Alabama
Posts: 118
Default

I've got a 2008 DE 300 (same as EC, but no lights and smaller flywheel).

The jetting is #178 main. #45 pilot. LTR needle, clip in center position (call Les at LTR). Air screw , 2 - 2 1/2 turns out.

We run Bel-Ray MC-1 @ 50:1 with pump gas. (The Bel-Ray is a little dirty at the exhaust outlet, but does great at keeping the top end and main bearings in good shape).

Our bike starts easily, runs clean and crisp from bottom to top and doesn't foul plugs. It pulls strong throughout and runs away from our KTM 400.
Reply With Quote
  #3  
Old 08-07-2009, 08:06 AM
fabulous furry fabulous furry is offline
Member
 
Join Date: Aug 2009
Location: Grenada, Caribbean
Posts: 41
Default jetting

thanks for that but i had to reduce the main jet to 172 and it is still fooling plugs.the idle jet is 42. I use 1 % maxima castor 927 so can't go any lower in mix.
Reply With Quote
  #4  
Old 08-07-2009, 10:07 AM
stevethebrit's Avatar
stevethebrit stevethebrit is offline
Member
 
Join Date: Feb 2009
Location: Sweden
Posts: 38
Default

Sure you got rid of all the street legal stuff?
__________________
EC 300 2008
Reply With Quote
  #5  
Old 08-07-2009, 10:11 AM
Nick's Avatar
Nick Nick is offline
Gold Level Site Supporter
 
Join Date: Jul 2006
Location: Nevada
Posts: 560
Default

If it came street legal it could possibly have pipe with catalyst inside, although racing shouldnt have it but possible nonetheless.
__________________
Dont follow me, You wont make it.
Reply With Quote
  #6  
Old 08-07-2009, 03:12 PM
fabulous furry fabulous furry is offline
Member
 
Join Date: Aug 2009
Location: Grenada, Caribbean
Posts: 41
Default

the pipe mounted on is silver like an fmf the other one that came in the box is black with a tube sticking out.
Reply With Quote
  #7  
Old 08-10-2009, 10:41 AM
bondo bondo is offline
Senior Member
 
Join Date: Oct 2007
Location: Birmingham, Alabama
Posts: 118
Default

With a 172 main & 42 pilot, I'm surprised it's still rich. Stock needle? What clip position?

You said you're running your oil @ 1% ? That's a ratio of 100 : 1, correct?

Bear in mind that a mix ratio of 100:1 results in more fuel in the combustion chamber as compared to a mixture of 50:1
(Richer v. Leaner has to do more with the volume of fuel than the volume of oil in the fuel).
Running a higher ratio of oil in your fuel will actually result in a leaner fuel mix to the engine.

Could there be a noise (and air) reducing cover on the air inlet?

The '08 DE I referred to in my earlier post has an FMF Gnarly and TC II S/A.

How many hours on the bike so far?
Reply With Quote
  #8  
Old 08-10-2009, 12:41 PM
fabulous furry fabulous furry is offline
Member
 
Join Date: Aug 2009
Location: Grenada, Caribbean
Posts: 41
Default jetting a new 300 racing

about the needle the carburetor is full of philips head and can't open any of the screws .i found in a small plastic bag a needle gold color CHN written on it.is it the "Nambotin" racing set up ?
i will try 2% as recommended then and set everything back to main 178 and idle jet 42.
the air filter reducer is removed.
the bike will go on the third tank.
Reply With Quote
  #9  
Old 08-11-2009, 08:28 AM
bondo bondo is offline
Senior Member
 
Join Date: Oct 2007
Location: Birmingham, Alabama
Posts: 118
Default

No idea about the needle. After three tanks, the engine should be
sufficiently broken in. Hopefully, the 2% oil mix will do the trick for you.
Did we discuss the air screw? A small detail, but will influence off - idle response. (I usually find 2 - 2 1/2 turns out is a good place to start).

If you're still unsatisfied, try speaking with Mark at GoFasters or Les at LTR.
They're both very knowledgeable. Links on this site.
Reply With Quote
  #10  
Old 08-11-2009, 09:28 AM
fabulous furry fabulous furry is offline
Member
 
Join Date: Aug 2009
Location: Grenada, Caribbean
Posts: 41
Default

that was a great help. i went back to the original setting as it came 175 main and change the plug for an iridium ngk it is cleaner.gas mixed at 2% with maxima Bio 2t.
august in the caribbean is 100% humid and temp is around 33 C so it does mess up the jetting but never had any problem with the 250 .
Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
write up 2010 Gas Gas EC 250 2T Racing REVERUP General Discussions & Announcements 6 08-29-2010 05:36 PM
Anyone installed Scorpion Racing Radiator cages on a 2010 model? Kurdt General Discussions & Announcements 6 08-11-2010 06:26 AM
2010 250 ec racing my first gasgas bowtech General Discussions & Announcements 4 03-29-2010 05:21 PM
2010 cross country or racing? gg3 General Discussions & Announcements 10 12-08-2009 08:38 AM
2010 EC250 racing Berkyboy General Discussions & Announcements 4 08-21-2009 12:56 PM




All times are GMT -5. The time now is 05:21 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org