s-7 nozzle

M

MOLE111

Member

Feb 19, 2003

12

0

• Feb 19, 2003

• #1

seeing how were on this subject already , i also have an 01 cr250 , would i notice much difference after i install the s-7 nozzle ? i'm currently running fmf sugested jetting at sea level and i'm not very happy , it still loads up pretty easy on trailing throttle and blubbers and throws spooge out the silencer at 40:1 . some have mentioned changing to a keihin carb but i can't afford that right now. i ride mostly off road , what jets are you guys running with the s-7 nozzle .

 

S

sandrider02

Member

Aug 28, 2002

30

0

• Feb 19, 2003

• #2

I'm going to install mine this weekend and I'll let you know if I notice a difference. I also have an fmf pipe and have the same problems your having so hopefully it will work. I've heard good things about putting the S-7 nozzle in.

 

M

MOLE111

Member

Feb 19, 2003

12

0

• Feb 20, 2003

• Thread starter
• #3

ride report sounds great , what main , pilot and needle position are you going to run with the s-7 ? thanks

 

S

sandrider02

Member

Aug 28, 2002

30

0

• Feb 20, 2003

• #4

I'm going to ride it with the stock jetting except for the nozzle and see how that works. Then I'll adjust it if its not running right.

 

J

john stu

LIFETIME SPONSOR

Jan 7, 2002

790

0

• Feb 20, 2003

• #5

does anybody know the correct part# for an s-7 nozzle ?and where can i get one

 

S

sandrider02

Member

Aug 28, 2002

30

0

• Feb 20, 2003

• #6

here's where I got mine http://216.37.204.206/wps/Yamaha_OEM/YamahaDB.asp?Type=13&A=146&B=9
part #- 3TC-14141-S7-00

 

D

dodgeaspen

Member

Dec 11, 2002

36

0

• Feb 22, 2003

• #7

What is the difference between a S-7 and a S-8??

 

M

MOLE111

Member

Feb 19, 2003

12

0

• Feb 22, 2003

• Thread starter
• #8

i believe the difference between the s-7 and s-8 is the diameter of the inner taper .

 

M

MOLE111

Member

Feb 19, 2003

12

0

• Feb 22, 2003

• Thread starter
• #9

sandrider
did you test the s-7 nozzle today ? did it make a difference ?

 

B

bailout123

Member

Sep 1, 1999

14

0

• Feb 23, 2003

• #10

Hello all,
I just installed the S-7 in my 01 CR250 and it runs much better, but I still have to play with the jetting. I'm running 30 Slow jet, H2-75 second clip, 430 main and air screw 1.75 out. It idles great, runs much better, but I'm still getting A LOT of Spooge. Pre mix is at 32:1 WP. The plugs looks very close to the Perfect Color one EG has on this page http://www.eric-gorr.com/techarticles/sparkplugs.html
but the treads are black (oiled) all the way up. Any Ideas? I really don't know what is causing all that Spooge. Low, Mid or Main setting?
I want to run a H2-76 next weekend and see how it does.

I am in Arizona 1100 Feet MSL, temp today was 76 during my ride.

 

I

IRISHCOFFEE

Member

Aug 3, 2002

194

0

• Feb 24, 2003

• #11

i have the same bike and use the s-7 also. i reall feel a 50-1 ratio with modern oil is better. never had a problem. good luck.

 

S

sandrider02

Member

Aug 28, 2002

30

0

• Feb 24, 2003

• #12

I just got back from riding all weekend in the sand. The bike ran so much better with the s-7 nozzle. Didn't foul any plugs all weekend. Its still running rich but I kept it like that cuz I was on the sand. But I definetly suggest you get the nozzle, its worth the $20.