Low compression '98 400f

22 replies to this topic
  • 1998YZ400F

Posted May 14, 2008 - 11:37 AM


i think when i have the head off i will go ahead and replace the rings for piece of mind. its not much more work. i cant tell if its coming out of the breather because i have to take the cover off to position it to TDC. i dont have the stock timing cover since i have an aftermarket stator that doesnt have a timing mark.

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  • grayracer513

Posted May 14, 2008 - 12:07 PM


Then you would hear air coming from down in the chain tunnel.

But you're right, rings are cheap and simple.

  • 1998YZ400F

Posted May 14, 2008 - 01:39 PM


thats what i figured. plus that way i can also make sure the cylinder wall is good.

EDIT: needs new rings too and or cylinder is scarred.

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