Wr400 to Wr426 Motor Swap

2 replies to this topic
  • Doughman

Posted November 02, 2010 - 06:42 AM


Long story short I seized the motor on my 98 wr400 and came across a good deal on a complete 2002 wr426 motor. My question is will the 426 motor easily drop into my 98 frame and if so what if any modifications need to be done? Such as newer carb, jetting, different spacers, etc.

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  • Doughman

Posted November 02, 2010 - 12:27 PM


bump ......................anyone?

  • jayh300

Posted November 02, 2010 - 01:47 PM


have read a few posts on this... this one is pretty much how they all go..

http://www.thumperta...ight=400 to 426

http://www.thumperta...ight=400 to 426


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