Jetting with Yz timing , whose running what?

4 replies to this topic
  • Team_Oatmeal_Pie

Posted October 02, 2002 - 08:14 AM


Post your jetting with Yz timing and elevation and pipe/header combo. Looking for who has the best set up at different elevations.

  • Hick

Posted October 02, 2002 - 12:24 PM


'01 WR w/ R series exhaust AND '01 with stock uncorked, both with same jetting (may be slight difference in fuel screw).

4,000 ft. to 5,000 ft. + elevation
SW desert, 75 to 100 degrees w/ ~ 30% humidity 90% of the time.

EKQ #3
160 main
40 pilot (this may go to 42 in the winter)
PAJ 75-85
200 MAJ
Started out at 1.5 turns out on fuel screw and fine tuned from there, I think both ended up a tad richer here...

BTW this is identical to jetting in my '01 YZ w/ a TA. Versus the stock exhaust all I did was richen the fuel screw a bit. Also, the uncorked WR is YZ timed, the one w/ the R series has WR timing.

Hope this helps.

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  • Bill

Posted October 02, 2002 - 02:29 PM


See my sig....


  • Dean400

Posted October 02, 2002 - 03:03 PM


'98 WR400 throttle stop off, lid off, White Bros. E-series pipe, flywheel weight, 172 main jet, stock all else, at about 1,000 feet above sea level.

  • SoCalWR426

Posted October 03, 2002 - 01:38 AM


See my Sig.Sea level to 6KSoCal


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