yz426 cylinder head resurfaced

4 replies to this topic
  • Dremitchellyamaha

Posted November 10, 2011 - 09:15 AM


I resurfaced my cylinder heads at the machine shop at my local community college because they were warped. I took .008" off the second picture and .006" off the first picture. My question is can I take more off the second head because

its sill warped past service specs. how do I upload the pictures?

  • grayracer513

Posted November 10, 2011 - 09:40 AM


how do I upload the pictures?

You have to post the pictures to a hosting site such as Flickr or Photobucket, then kink them here. The services are usually free.

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  • Dremitchellyamaha

Posted November 10, 2011 - 10:06 AM


these are the links to the pictures.
Posted Image
Posted Image

Edited by grayracer513, November 10, 2011 - 10:53 AM.
reformat IMG links

  • grayracer513

Posted November 10, 2011 - 10:58 AM


If you have your old head gasket, I'd bolt it up with some clay on the piston, install the cams and turn it over a time or two, then pull it off and check the valve to piston clearance. .014" is quite a bit, and I'm not sure what the resurfacing limit is.

  • Dremitchellyamaha

Posted November 10, 2011 - 11:32 AM


They are two different heads. I only took .006 off the first head and .008 off the second head.

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