2010 head gasket leak

3 replies to this topic
  • cablemonkey334

Posted March 13, 2011 - 05:43 PM


just installed a new gytr head an a hi comp piston on my 2010 450 . i have some blow by on the outside of the head an i also have coolant comin out of the overflow hose . did i read the manual wrong on the torque spec . 24 then release an re torque to 14lbs.

  • grayracer513

Posted March 13, 2011 - 06:41 PM


You read that much right, but it sounds like you skipped step 3

  • Torque the head bolts to 24 ft/lb to settle and pre-compress the gasket
  • Loosen and retorque to 14 ft/lb
  • mark each bolt and tighten each one 90 degrees farther, and then another 90 degrees more, for a total of 180 degrees each

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • cablemonkey334

Posted March 13, 2011 - 06:57 PM


wow thanks for the info , i guess its off the yamaha shop for a new gasket .

  • grayracer513

Posted March 13, 2011 - 09:45 PM


RTFM :thumbsup:

If you haven't put more than a few minutes time on it, you might be able to go ahead with taking the bolts another 180 Degrees without taking the head off.

Related Content


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.