'03 YZ250F cams in a '00 WR400


6 replies to this topic
  • g-powerr

Posted April 01, 2010 - 12:55 AM

#1

I know that my question might be for the WR section but I'm sure I have a better chance for a good answer here so:
Will both intake and exhaust cams from a '03 YZ250F fit in my '00 WR400? I can get both cams for less than $100 so I think it will be a good deal. Also will I gain some more power with these cams, besides the auto decompression?

  • grayracer513

Posted April 01, 2010 - 07:07 AM

#2

No, the 250F cams won't fit at all.

The YZ450 cams won't fit as a pair, because you won't be able to time them. Read:

http://www.thumperta...584#post8907584

Refer to the DCM cam thread, link to instructions for details.

Using the '03 exhaust cam provides a nice little boost in power, but the aftermarket stage one cams are easier to install.

  • g-powerr

Posted April 01, 2010 - 08:01 AM

#3

Thank you kindly sir!
It's really hard to get HotCams or any aftermarket cams here, almost nobody ships to Eastern Europe...wish I was born in the USA.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted April 01, 2010 - 08:37 AM

#4

Then what you want is a cam from an '03-'05 YZ450. An '06 will also work, but you'll loose a bit of low end (not much)

  • umu24013

Posted April 03, 2010 - 05:48 AM

#5

Using the '03 exhaust cam provides a nice little boost in power, but the aftermarket stage one cams are easier to install.



grayracer513, please help me figure out what combination to use.

I have a '03 yz450f exhaust cam, and a hotcams stage 1 exhaust cam

What would you recommend for best performance in my case (yz426):

a. 03 exhaust cam + stock intake

b. hotcams stage 1 exhaust + stock intake

c. hotcams stage 1 both exhaust and intake (will need to buy the hotcams intake)

  • grayracer513

Posted April 03, 2010 - 08:24 AM

#6

There isn't really that much difference between the three. If I had the parts you have, I'd probably lean toward :thumbsup: just for the simplicity, assuming the Hot Cams exhaust is an auto decomp cam made for a 426.

  • umu24013

Posted April 03, 2010 - 05:40 PM

#7

There isn't really that much difference between the three. If I had the parts you have, I'd probably lean toward :thumbsup: just for the simplicity, assuming the Hot Cams exhaust is an auto decomp cam made for a 426.


Thank you!





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