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cylinder head

  1. Cx500 Cylinder Head bolt thread type.

    Technical Help Forum
    Hello clever fellows. Any one by chance know what sort of thread is on the M12 cylinder heads bolts? What's the pitch as I think there are 3 possibilities. I've a rather bodged helical insert that needs changed, I'm guessing it's a shack proof helicoil that's chewing bolt threads. I've got some...
  2. How to prep motor for cylinder bore?

    Technical Help Forum
    I'm trying to bring my CX back to life and ran into a snag with one of my cylinders. My mechanic found rust and a little bit of pitting in one cylinder and now its only getting 70 psi while the other is getting about 120 psi. I don't think I can just remove the cylinders and bring them to get...
  3. Cylinder Head Rebuild - Large Gap Between Valve and Adjustment Screw

    Technical Help Forum
    Hi All, Hoping to get some feedback on a concern I have come across during my cylinder head rebuild. After removing the right cylinder head and rebuilding (cleaning/checking valves, checking valve to guide clearances, lapping seats, new guide seals etc) I installed a new head gasket...
  4. oops... Valve Cover bolt snapped......oops

    Technical Help Forum
    So I polished my cylinder head covers and was putting them back on when... tightened that sucker too much and it broke right off...How much damage have I done here? I've never tried to extract a broken bolt before. Is a left-turn bit/extractor my best bet?