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kounkel321

Valve Questions

13 posts in this topic

I have a 2002 yz426 with 2 bent valves...i was just gonna get a different head, but ill prolly do the valves instead....my question is since the 02's have titanium valves should i put them back in it or get stainless steel valves..and if i do that, is it a must to replace the springs also? any help greatly appreciated!!

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Using the '00 steel valves is a good low-cost alternative. But, yes, you have to use the matching springs, also from an '00. SS valves are nearly twice the weight of Ti.

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Just make it eazy on yourself, and sent it to the good people at Mototech Performance! :applause:

www.motoxtech.com 888-942-MOTO in Glen, NH

They rebuilt my head for way less than new parts would have cost.

My head was Cooked, when I bought it, there was a valve dent almost .200" deep.

ended up with new valves, seats, springs, loaded, for less than a used head on e- bay.

I keep checking my valve clearance, but it has not changed in the 3 years since they rebuilt it! :excuseme:

good luck!

Adam

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:applause:

I guess maybe they did not charge enough?!?!?!

I can't seem to find them.

There are others out there, good luck finding the best choice.

Sorry.

Adam

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i know one off a wr or yz400f fits right on, but some dude told me that one off a 03 yz450 fits right on too...is that right?

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Hello guys!

Is it possible to use SS valve from YZ 400 and 00"YZ426 to YZ 450,are they the same ?

...Sorry for my broken english ! :banghead:

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Please,grayracer513 explain where be the difference ?

The length of the stems and the size of the valve heads are different. The 450's have an entirely different head; the valve splay angle is different, and the head is 7mm shorter vertically.

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