YS 120 FZ valve gapping

[John Ferrell]

That is the only way the YS line will perform for me. I have found that a loose valve setting breaks E-clips and rocker shafts. 
John Ferrell    
http://DixieNC.US

  ----- Original Message ----- 
  From: David Harmon 
  To: discussion at nsrca.org 
  Sent: Monday, April 12, 2004 7:33 PM
  Subject: RE: YS 120 FZ valve gapping


  You probably shouldn't use a feeler gauge unless the engine has never been run.

  The reason is as the engine runs, the valve stem starts 'peening' a dimple into the rocker arm.

  If you put a feeler gauge into a well run engine and then adjust the valve, the clearance will be way too loose.

  IMO, the correct way to do this is to adjust the valve without a gauge for just a slight amount of free play when you

  move the rocker arm

   

  Regards

  Dave Harmon
  NSRCA 586
  K6XYZ[at]comcast[dot]net
  Torrance, Ca. 

  -----Original Message-----
  From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On Behalf Of Rcmaster199 at aol.com
  Sent: Monday, April 12, 2004 3:46 PM
  To: discussion at nsrca.org
  Subject: Re: YS 120 FZ valve gapping

   

  .004". Check with a feeler gauge





  Subj:YS 120 FZ valve gapping 
  Date:4/12/2004 2:24:15 PM Eastern Daylight Time
  From:aabdu at sbcglobal.net
  Reply-to:discussion at nsrca.org
  To:discussion at nsrca.org
  Sent from the Internet 



  Hello all, I have a silly question, what is the gapping on the YS120FZ. I have set the valves before, but do not remember what the gap should be.

  TIA
  Thank you
  Anthony

   
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