yamyrider
Active member
is there any difference between the needles in an srx 600 versus srx700.the part numbers are different
think you just answered your own question
YAMMIEGOD3:16
Active member
YOU DID ANSWER YOUR OWN QUESTION. 3:16 (yammie tony)
yamyrider
Active member
ok...so whats the difference....Q4...Q6????
RIVERRUNNER
Active member
This is a scary thread for me because I over looked this when I put a newer set of carbs on my sled this year. My plugs are great!!! Which is nice. How do I check them for the different needles. I know they are clip in the same position!! Help would be awesome.
valin
Active member
To check your needles, you need to remove them from the carburetors. You do so through the slide covers on the top of the carb. The numbers are stamped on the needles.
yamyrider said:
Those type of markings[Q-6, Q-8] are on the long brass tubes the needles move in or "Needle Jets".
valin
Active member
If you are talking about needle jets (nozzles), and I'm assuming you are, the difference in sizes are in 5 thousands of a millimeter per number increment. Therefore, a Q8 would be 0.010mm larger in diameter than a Q6. Also, each letter increment is 0.050mm larger than the previous.
Example:
Q6 measures 2.730 mm
Q8 measures 2.740 mm
R8 measures 2.790 mm
I hope this helps you.
Example:
Q6 measures 2.730 mm
Q8 measures 2.740 mm
R8 measures 2.790 mm
I hope this helps you.
valin
Active member
I found a table for ya.
RIVERRUNNER
Active member
Ok so I am .20 thousands between the needle jets that the sled came with and what I have in it now. It that going to make a big difference? srx6-q2 srx7-q6
both are clipped in the same position!!
both are clipped in the same position!!
valin
Active member
It will make a difference, yes. Having a larger nozzle will allow more fuel to flow past the needle at various throttle positions.
harness racer
New member
spoons said:
im not sure about that , i pulled the needles from my 600 carbs and the ones from my 700 yesterday read as follows ;
600- g26
700- f26
i calipered both of them and there does not seem to be any differences ;
RIVERRUNNER
Active member
Ok guys I pulled my carbs and this is what I found.
Oringinal srx600 needles are 6fn2
Srx 700 needle are 6gm26
They are almost the same on my calipers gauge
I know nothing about these and need to know if I should use the old ones or the ones that came with the newer carbs. I am off to do research also!! I would like to put my sled back together so I can ride tonight. Any help would be great!!!!!!!!!!
Oringinal srx600 needles are 6fn2
Srx 700 needle are 6gm26
They are almost the same on my calipers gauge
I know nothing about these and need to know if I should use the old ones or the ones that came with the newer carbs. I am off to do research also!! I would like to put my sled back together so I can ride tonight. Any help would be great!!!!!!!!!!
Last edited:
RIVERRUNNER
Active member
valin
Active member
Guys, I am going to clarify this, in case anybody is a bit confused.
You are talking about the needles, not the needle jets.
The needle jets (nozzles, tubes) are mounted in the lower portion of the carburetor. They are hollow tubes where the main jet screws into on the bottom, and the needle slides in and out of when you vary throttle position.
The needles are mounted in the carburetor slide and move in and out of the needle jet. They generally have 5 clip positions, and are tapered on the bottom.
You are talking about the needles, not the needle jets.
The needle jets (nozzles, tubes) are mounted in the lower portion of the carburetor. They are hollow tubes where the main jet screws into on the bottom, and the needle slides in and out of when you vary throttle position.
The needles are mounted in the carburetor slide and move in and out of the needle jet. They generally have 5 clip positions, and are tapered on the bottom.
RIVERRUNNER
Active member
Ok thanks so what is the difference in my needles???
harness racer
New member
hey river one of us got the f or g mixed up , but i agree theres not much difference if any , did you compare the brass nozzle tube ?
RIVERRUNNER
Active member
Not yet but I am going back out and what should I look for, both of the carb racks are sitting on the bench!!!
valin
Active member
The letters in the needle description depict the different tapers on the needle, and it will affect how the fuel is drawn during partial throttle application.
F = 1 degree, 30'
N = 3 degrees, 30'
G = 1 degree, 45'
M = 3 degrees, 15'
Generally, there is a number after the ones you have given that states the top width of the needle. I am assuming the numbers you have posted after the letters either have to do with needle length, or where those tapers begin on the needle. The changes on those two needles are minimal, and providing they run the same length, you won't notice much of a difference.
F = 1 degree, 30'
N = 3 degrees, 30'
G = 1 degree, 45'
M = 3 degrees, 15'
Generally, there is a number after the ones you have given that states the top width of the needle. I am assuming the numbers you have posted after the letters either have to do with needle length, or where those tapers begin on the needle. The changes on those two needles are minimal, and providing they run the same length, you won't notice much of a difference.
harness racer
New member
valin said:
thanx ryan awsome info " need 4.6 mph to catch the chisler ..those 34mm are looking tempting