I need your opinion - YZ time

3 replies to this topic
  • guillev

Posted May 01, 2001 - 11:02 AM


Hello, i need your opinion about yz time in my wr 400 '00
Why I must to setup my bike with that time?

  • MN_Kevin

Posted May 01, 2001 - 01:49 PM


You gain in the midrange and top end and may lose a little off the bottom.

You don't have to do anything you don't want to. :)

'99 WZ with all YZ mods, de-octopused, FMF PowerBomb header, Stroker SX-1 silencer, SS front brake line, forked over by Pro-Action, OEM YZ tank, IMS YZ seat, carb mods by Jim Dean and Sir "Taffy" from Jolly Old England, AMA, NESC.

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  • Blue_Boner

Posted May 01, 2001 - 05:24 PM


If you want your bike to have instant front wheel pulling power then switch to YZ timing. I have made the switch on my 400 and love the fact that I can lift the tire anytime needed. It may hurt bottom end power a little, but this engine was designed to run in the upper rev's anyway.

98 WR400 "Strokerized"
97 EXC400
94 RMX250

  • robin_des_bois

Posted May 02, 2001 - 04:22 AM


I changed the timing on my wr99 road plated and didn't see a realy noticeable difference in loosing bottom torque. However, mid where improved. Go for it, the hardest thing is not the timing change but the rejetting. It will cost you a couple of hour in time and may be a main jet and a needle, no more.


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