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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc. |
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#1
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N1EF w/#9 slide
I understand the lack of love for the stock N1EF needle, it can "blubber" (run rich) at 1/4 throttle or so and then when it cleans out, there is a "hit".
I tried to get rid of the lean spot by going down on the pilot, but then got a hanging idle. Coming down on the main leaves it too lean up top. This diagram - which was very helpful - showed that at lower throttle openings (excepting the very bottom) the slide cutaway actually has more of an influence than the pilot jet. Jetting pic.jpg So I decided to that since I had a #9 slide in my '05 GG I might as well swap it out and give it a try in the 2018 (XC 300). Worked like magic! FWIW the '05 carb was modified by Ron Black (RB Designs). He put a divider plate in that carb, and sent it back with a #9 slide. So there is some precedence for using the #9 in a 300. I'm running 38/175/clip #2. Bottom line - Someone else needs to try the stock needle with a #9 slide and see if I am just imagining things. IMO this is a really good setup! Jeff
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'18 GG XC 300 '05 GG DE 300 '01 GG txt 321 |
#2
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Slides are quite expensive. An NEDJ is like $15.
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'07 EC300 GG '14 TXT250 GG '? 496 CPI Cheetah RZ/RGV hybrid '22 765 Street Triple RS '21 XTrainer '69 Stinger T125 Suzuki '23 TRS 250RR (it's a Trials thing) |
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Not much Holley left on that guy!
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Noah 2000 EC250 with 2011 transformation kit, KYB SSS forks, MN street title 16' Ski-Doo XS Renegade X 1200 4T 16' Specialized Fatboy trail 02' ZRX 1200r R.I.P. 72' Olds 500ci, Batten Heads, Street/Drag car, former CarCraft magazine centerfold (has-been) 15' TW200 |
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I agree. There are not many people with a #9 slide sitting around, and you can get great results for less dollars.
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'18 GG XC 300 '05 GG DE 300 '01 GG txt 321 Last edited by farmerj; 11-06-2021 at 10:41 PM. |
#6
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I would expect better results too. Too thin a needle at the top will result in big harder to atomise blobs of gas being sucked past where they should have come up the pilot in a spray.
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'07 EC300 GG '14 TXT250 GG '? 496 CPI Cheetah RZ/RGV hybrid '22 765 Street Triple RS '21 XTrainer '69 Stinger T125 Suzuki '23 TRS 250RR (it's a Trials thing) |
#7
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So. . That's the moon lander upside down?
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'07 EC300 GG '14 TXT250 GG '? 496 CPI Cheetah RZ/RGV hybrid '22 765 Street Triple RS '21 XTrainer '69 Stinger T125 Suzuki '23 TRS 250RR (it's a Trials thing) |
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How the hell do you manage to get the GasGas airbox to fit around that?
Is that why you had to bend that bolt in the centre? |
#9
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Quote:
I'm planning to be at a ride at the end of the month with a bunch of guys, so maybe I'll get a couple of them to give it a try - and take some time to tune the N3CH as a comparison.
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'18 GG XC 300 '05 GG DE 300 '01 GG txt 321 Last edited by farmerj; 03-17-2021 at 11:43 AM. |
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