How compatible is my yz400f to a yz426 or 450


6 replies to this topic
  • copenhagen101

Posted March 29, 2010 - 10:53 PM

#1

I need a new piston and cylinder and i was wondering if a 1998 yz426f and a 1998 yz450 will work on my 1998 yz400f. If you could give me yous advice that would be great, thank you......

  • sacfelix

Posted March 29, 2010 - 10:56 PM

#2

Yamaha made the YZ400f from 98-99, the YZ426f from 2000-2002 and the YZ450 from 03 to current.

  • grayracer513

Posted March 30, 2010 - 08:36 AM

#3

If you rebuild your YZ400 crank using a 426 rod, you can then use a 426 piston and cylinder. No 450 top end parts will fit on either a 400 or 426.

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  • rmx250rider

Posted March 30, 2010 - 10:50 AM

#4

If you rebuild your YZ400 crank using a 426 rod, you can then use a 426 piston and cylinder. No 450 top end parts will fit on either a 400 or 426.


Would it be as reliable using the rod and cylinder.... can you use the cams out of the 400 in the 426 head?

  • grayracer513

Posted March 30, 2010 - 11:02 AM

#5

Yes and yes.

  • rmx250rider

Posted March 30, 2010 - 11:15 AM

#6

can I still use the the part off the 400 that goes under the cylinder? I forgot its name

  • grayracer513

Posted March 30, 2010 - 11:31 AM

#7

The base gasket?





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