needle uk
- Thread starter nickp
- Start date
Hi Nick, if smooth power delivery is what you're after then i think the Suzuki needles are for you! They have a longer straight section and more progressive first taper, so leans the bottom end nicely.
I originally had N1EG (AS1, 35PJ, 178M, 2nd clip from top, UK climate 0-1000ft) in mine and have now replaced with NEDJ. Originally it was very rich and burbly up to about 1/4 throttle and not nice to ride down there. Now it has cleaned up a lot at these low throttle openings, although its still a work in progress with room for more improvement (currently 42PJ, 182M, middle clip).
I know the main can be dropped, but having just got into this jetting game i wanted to play it on the safe side! Seems to run ok up top considering. I think a smaller main may even give a slight benefit at the lower throttle openings also - also need to assess airscrew effects up to 1/8 throttle.
The suzuki needles are a vast imrpovement over stock ones, so go for it. I ordered mine through the local suzuki dealer and it arrived next day, all for just over a tenner
Quick search on google, and partno. for NEDJ is 13383-37FM0.
Im no jetting expert but certainly noticed a big benfit from this mod.
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I originally had N1EG (AS1, 35PJ, 178M, 2nd clip from top, UK climate 0-1000ft) in mine and have now replaced with NEDJ. Originally it was very rich and burbly up to about 1/4 throttle and not nice to ride down there. Now it has cleaned up a lot at these low throttle openings, although its still a work in progress with room for more improvement (currently 42PJ, 182M, middle clip).
I know the main can be dropped, but having just got into this jetting game i wanted to play it on the safe side! Seems to run ok up top considering. I think a smaller main may even give a slight benefit at the lower throttle openings also - also need to assess airscrew effects up to 1/8 throttle.
The suzuki needles are a vast imrpovement over stock ones, so go for it. I ordered mine through the local suzuki dealer and it arrived next day, all for just over a tenner
Quick search on google, and partno. for NEDJ is 13383-37FM0. Im no jetting expert but certainly noticed a big benfit from this mod.
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Jakobi
Super Moderator
Above you wrote you have an AS1. Black circular threaded cap and a deep bowl? Correct, if so you'd be better off running a richer needle diameter (around an F on a 250). Otherwise, if you have a AS2, I've personally found the 250 prefers a W diamater needle with a 40/42 pilot, where the 300's like the J (same pilots).
Also, like Simmo says, check the cable play, and also the slide height (idle screw). Sometimes backing it out a fraction more is all it takes to drop the bike back into a nice low idle.
Also, like Simmo says, check the cable play, and also the slide height (idle screw). Sometimes backing it out a fraction more is all it takes to drop the bike back into a nice low idle.
