Xr 650l Jetting Question


14 replies to this topic
  • tmoney12

Posted November 26, 2007 - 07:05 AM

#1

I have a 1997 Xr 650l with 1750 miles. I have just removed the snorkle, replaced the air filter with a UNI, removed the exhaust baffle. I have performed the Daves mods, but I cant find a 55 pilot jet. The closest I can find was a 60 pilot. I have shimmed the needle with a .025 washer and put in a 158 main. I live in Arkansas with elevations between 300-1200 ft. Will the 60 pilot be too big. Can I dial in the idle mixture screw to accomodate the larger size pilot? I have not run it yet with these settings, but I dont want to have to take the carb off again if I dont have to. Any with experiance please let me know. Thanks for your time.

-Tmoney12

  • martinfan30

Posted November 26, 2007 - 07:40 AM

#2

I have a 1997 Xr 650l with 1750 miles. I have just removed the snorkle, replaced the air filter with a UNI, removed the exhaust baffle. I have performed the Daves mods, but I cant find a 55 pilot jet. The closest I can find was a 60 pilot. I have shimmed the needle with a .025 washer and put in a 158 main. I live in Arkansas with elevations between 300-1200 ft. Will the 60 pilot be too big. Can I dial in the idle mixture screw to accomodate the larger size pilot? I have not run it yet with these settings, but I dont want to have to take the carb off again if I dont have to. Any with experiance please let me know. Thanks for your time.

-Tmoney12


it will run but be really rich on the low end. you may turn the fuel screw in to about 1/4-1/2 and it MIGHT help. really need to get a 55 though.

  • Brtp4

Posted November 26, 2007 - 08:03 AM

#3

I might have one, will check and get back to you later in the day.

BP

I have a 1997 Xr 650l with 1750 miles. I have just removed the snorkle, replaced the air filter with a UNI, removed the exhaust baffle. I have performed the Daves mods, but I cant find a 55 pilot jet. The closest I can find was a 60 pilot. I have shimmed the needle with a .025 washer and put in a 158 main. I live in Arkansas with elevations between 300-1200 ft. Will the 60 pilot be too big. Can I dial in the idle mixture screw to accomodate the larger size pilot? I have not run it yet with these settings, but I dont want to have to take the carb off again if I dont have to. Any with experiance please let me know. Thanks for your time.

-Tmoney12



  • tmoney12

Posted November 26, 2007 - 08:22 AM

#4

That would be great if you have an extra. I would be happy to send you payment and shipping for it.

-tmoney

  • barchetta

Posted November 26, 2007 - 12:23 PM

#5

I got mine from motorcyclecarbs.com

If I remember, they arrived 2-3 days after I ordered them, and that was all the way across the US.

I think the part number is N424-26-055

  • Brtp4

Posted November 26, 2007 - 01:32 PM

#6

TMoney,

I have extra 55s and 58s. I bought them from Sudco and had to buy in a 4 pack, so I am happy to get rid of a few.

Also have a bunch of mains.

PM me with your address.

BP

That would be great if you have an extra. I would be happy to send you payment and shipping for it.

-tmoney



  • martinfan30

Posted November 26, 2007 - 01:42 PM

#7

TMoney,

I have extra 55s and 58s. I bought them from Sudco and had to buy in a 4 pack, so I am happy to get rid of a few.

Also have a bunch of mains.

PM me with your address.

BP


how much was a 4 pack? are you running an fcr41?

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  • tmoney12

Posted November 26, 2007 - 01:44 PM

#8

TMoney,

I have extra 55s and 58s. I bought them from Sudco and had to buy in a 4 pack, so I am happy to get rid of a few.

Also have a bunch of mains.

PM me with your address.

BP


PM Sent, Thanks for your reply.

  • Brtp4

Posted November 26, 2007 - 02:05 PM

#9

MF30,

I forget what the 4 pack was, but it seemed a lot.

I have since switched to the FCR, when I bought it I asked Sudco to split up the packs so I could order single jets.

BP


how much was a 4 pack? are you running an fcr41?



  • martinfan30

Posted November 26, 2007 - 02:20 PM

#10

MF30,

I forget what the 4 pack was, but it seemed a lot.

I have since switched to the FCR, when I bought it I asked Sudco to split up the packs so I could order single jets.

BP


i bought a fcr 41 from them too. run 158/52 2 turns out at 4300 ft.

what are your specs?

  • Brtp4

Posted November 26, 2007 - 02:36 PM

#11

160 Main, 45 pilot w/conversion, 2 turns on fuel screw, 3400'.

BP



i bought a fcr 41 from them too. run 158/52 2 turns out at 4300 ft.

what are your specs?



  • martinfan30

Posted November 26, 2007 - 02:36 PM

#12

conversion?

  • Brtp4

Posted November 26, 2007 - 02:45 PM

#13

Some FCRs have a pilot air jet, some have a conversion that uses an adjustable metering screw. Mine has the conversion.



conversion?



  • martinfan30

Posted November 26, 2007 - 02:56 PM

#14

is that something i can buy from them and install on my slant bodied fcr? whats the advantage?

  • Brtp4

Posted November 26, 2007 - 03:14 PM

#15

is that something i can buy from them and install on my slant bodied fcr? whats the advantage?



Nope, no advantage. Save your money.

BP





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