Sign in to follow this  
Followers 0
tmoney12

Xr 650l Jetting Question

15 posts in this topic

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

Share this post


Link to post
Share on other sites
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.

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

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

-tmoney

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites
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?

Share this post


Link to post
Share on other sites
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.

Share this post


Link to post
Share on other sites

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?

Share this post


Link to post
Share on other sites
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?

Share this post


Link to post
Share on other sites

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?

Share this post


Link to post
Share on other sites

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

conversion?

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites
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

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0