|
Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc. |
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Starting diameters
Anyone out there who knows which starting diameters the following needles have: ( I am unable to drive to my garage today so can't measure...)
N1EF NECW JD_red (mine has 2 scribes) The question I ask is because the bike sounds rich with the NECW in #3 on the first third of the rev range and I try to figure out why people constantly tell me it is a lean needle. It isn't in my opinion. It is not even lean at WOT running a 172 at 71 F. |
#2
|
||||
|
||||
You said rev range.
Always think throttle position.
__________________
'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) |
#3
|
|||
|
|||
I apologise, but still need the diameters
|
#4
|
|||
|
|||
all i have is :
N1EG : (thickest diameter) 2.7mm, tip is 1.4mm NECJ : 2.75mm tip is 1.4mm what PJ are you running? have you tried 1 step leaner? |
#5
|
|||
|
|||
i seem to remember jakobi listing these in the jetting database
__________________
2003 txt250 Pro 2013 Ossa 280i |
#6
|
||||
|
||||
From someone clever on the forum,can't remember who posted it but super useful-
Nxxx needle diameters D=2.685mm E=2.695mm (JD Blue) F=2.705mm G= 2.715 H= 2.725 W/I=2.735 (JD Red) J= 2.745 K=2.755 |
#7
|
||||
|
||||
I posted that.. I didn't measure them though. Found in my studies and saved. Been posted a few times.
|
#8
|
|||
|
|||
Thx to GG3 and Jakobi!
|
#9
|
|||
|
|||
42. No, not yet but will give it a try once the weather has stabilized. Currently we have catastrophic weather starting with 12 degrees Celsius in the morning, 23 two hours later and 12 degrees 30 minutes later due to heavy thunderstorms. Humidity changing extremely all the time...
But I think, considering the JD_red worked well down low, that the 42 is also ok with the NECW as they have the same starting diameter of 2.735. Nevertheless it is worth a try as I found one difference: with NECW I don't need to pull the choke and that indicates it may be too rich... |
#10
|
|||
|
|||
no need for a chocke with a cold engine, indeed indicates a rich situation.
if it's obvouisly running rich on the bottom, i'd try the 40PJ anyway. does turning the airscrew have effect with the 42 PJ? if not go ahead and put the 40 and be amazed put on a closed helmet ,rain coat and pants an go out testride :-p |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
03 FSE 450 starting | olderandyzer | Enduro Engine 4 stroke (including EFI & Exhaust) | 2 | 04-23-2013 02:07 PM |
Hot starting. | nick790 | Enduro Intake/Carburetion - 2 stroke | 0 | 04-21-2010 02:44 PM |
04 EC 300 Hard Starting | lordfeyr | Enduro Engine - 2 stroke | 4 | 01-25-2010 01:18 PM |
Max revs when starting up. | Todd5774 | Enduro Intake/Carburetion - 2 stroke | 4 | 01-24-2010 08:22 AM |
F-1 Starting! | Rick | Pictures & Videos | 6 | 12-18-2009 08:14 PM |