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Johnnyv04 yz450f

help! 450 cams in 426

10 posts in this topic

I believe so, you have both bikes so its easy to find out.

 

don't forget to re-shim the valves.

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If you remove the mechanism and cable, don't forget to plug the hole. I think your 450 has a plug you can use.

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You cannot easily use both 450 cams in a 426 because the timing marks don't work in the 426 head.  You can us the 450 exhaust cam, however, if you use a 426 intake.  The intake cam is timed first, then the exhaust is set based off of that:

 

http://www.thumpertalk.com/topic/56257-yz-450-cam-mod-please-read/page-49#entry2979654

 

http://www.thumpertalk.com/topic/56257-yz-450-cam-mod-please-read/page-53#entry4458141

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They are, but the 450 exhaust cam does in fact work in a 426.  Chain rides a little higher on th3 450 cog, but no problems.  It is better and simpler to use the aftermarket cams built for the 426, but if he has one of the 450's already, he could use it.  Exhaust cam only.

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If I use the exhaust cam that will get rid of my decompression lever?

The 450 has a r&d float bowl on the carb, should I use the whole carb with the r&d float bowl or just put the r&d float bowl on my carb?

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I opened the other thread. That answered my cam question thank you grey racer.

The 450 engine is ruined and I'm trying to use whatever I can on the 426. Can I use the stator from the 450 in the 426? I also have a stealthy flywheel weight in the 450, but I don't thing that will work with the 426. I'm hoping the oversized radiators from the 450 will fit the 426..

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 Can I use the stator from the 450 in the 426?

 

 

Nope.  Won't fit. The 450 is considerably different than the 426.  Very little interchanges. 

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