Xr400 Jetting Help

[fred_durst]

Hello

I want to make some mods to my Xr400.

Uni Air Filter
Airbox Snorkel Removed
and a
Vortip baffel

Now for my question, what size main jet should I be running, a 160? and for the pilot jet a 60? Does this sound about right? Any help would be appreciated, I want to get my bike running as smooth as possible and any other tips you guys have for me would be great, Thanx!

 

[fred_durst]

Anyone????

 

[FlashBurn]

I run a 62P 162M stock needle and clip setting,Uni filter,snorkel out,Pro Circuit T4 pipe with 1.5" endcap.geared 14/45.Bike runs great in the SoCal deserts and hills.

 

[fred_durst]

So mine sounds about right?

 

[fremontguy]

60, 160, needle clip #3 is a good starting point for sea level jetting. I started with that and slowly went down to 55, 152, clip #2 for 4k elev. Using XrOnly muffler with 3 disks.

 

[snaggleXR4]

I had good luck with 160/60, stock needle, UNI filter and XR's Only pipe. I'm at sea level. Good luck.

 

[fred_durst]

Thanx, will post back soon (as soon as this damn snow melts :))