wr reliability with yz timing


4 replies to this topic
  • poffer

Posted November 02, 2005 - 03:52 AM

#1

Just wondering if my wr engine will last shorter if I change the stock exhaust cam to the on from a yz450f and how reliability would be???

Have heard some that had blown engine on high rpm (piston meets valves)...?

  • Matty05

Posted November 02, 2005 - 04:10 AM

#2

as long as proper shims are used, reliability shouldn't change.

A lighter flywheel might work too instead of YZ cams.

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  • poffer

Posted November 02, 2005 - 07:33 AM

#3

as long as proper shims are used, reliability shouldn't change.

A lighter flywheel might work too instead of YZ cams.


What do you meen about proper shims??

  • vmxr

Posted November 02, 2005 - 07:50 AM

#4

Have heard some that had blown engine on high rpm (piston meets valves)...?



Sounds to me like somebody didn't get the correct timing set on the YZ cam.

  • simon@vic

Posted November 02, 2005 - 08:22 AM

#5

reliability will remain exactly the same. and no you don't need a lighter flywheel!



What do you meen about proper shims??


as in you have to adjust the valves when you change the cam.




 
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