Jetting in Oklahoma

7 replies to this topic
  • novajunkee

Posted April 29, 2002 - 05:25 PM


Just wondering which main jet you might be running or any other carb mods that might need to be made on a 99 400 in Oklahoma.

  • m2g4b

Posted April 30, 2002 - 03:24 AM


Hey there, I'm in Duncan and I am currently runnig stock jetting and stock settings on my carb, although when it was cold, I did play with the fuel screw some-what. Is yours having a problem or what? Also where do you ride in the City, we need to hook up sometime and ride!!!

  • Cobra314

Posted May 01, 2002 - 04:00 PM


I run a 48 pilot and have a Factory R&D P-38 Lightning Fuel Accelerator pump.

  • novajunkee

Posted May 01, 2002 - 04:35 PM


I'm not having any problems but I rode a guys 400 that had some carb work done on it and it was more responsive than mine. He's the one who told me about TT but I lost his number to find out what he did. My acc pump was filthy when I checked it. That seemed to help but the local dealer says there is a standard acc pump and then 3 options but he couldn't tell me the differences between them.
As far as riding goes I joined OCCRA (OCCRA.COM) and have been riding all over.

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  • Mark_Cantrell

Posted May 01, 2002 - 06:34 PM


Newer bikes have a leak jet to reduce the accel pump squirt. On older bikes, the BK mod, the taffy mod, putting washers under the AP diaphram, putting RC wheel collars somewhere are all things you can find on this post. Almost everyone that changes the AP goes for less fuel.


  • Cobra314

Posted May 01, 2002 - 10:31 PM


Did you meet this guy out at Stanley Draper Lake with a guy that was on CRF450? If so that was me. I have a '99 400 with MotoXXX graphics. I remember I met a guy out there a while back that I let ride my bike.

  • novajunkee

Posted May 02, 2002 - 03:53 PM


Cobra314 your the one that let me ride his bike. I'd be interested in knowing the modifications that you made on your bike.

  • Cobra314

Posted May 02, 2002 - 04:16 PM


take a look at my first post on this topic...that's it!! I sent you a PM.

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