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Thread: Head Cover Bolts

  1. #1
    Join Date
    Sep 2006
    Location
    Orion, MI
    Posts
    371

    Head Cover Bolts

    I was polishing my engine today and I noticed one of the bolts on the cover that covers the cam and valves was loose. When I go to tighten it, it doesnt tighten, but it doesnt feel stripped. I pulled the screw all the way out and the threads looked fine. I dont know what to do. Should I just put some loc tite on it and screw it back in the best I can or is it ok the way it is?

  2. #2
    Join Date
    Mar 2007
    Location
    hobbs, nm
    Posts
    870
    i think i would investigate why its not tightening. might be the wrong length in there
    2005 trx 450r

  3. #3
    Join Date
    Sep 2006
    Location
    Orion, MI
    Posts
    371
    I am positive its the right length. Its one of the bolts that is really long and goes to the base of the head. I dont want to have to tear the whole engine apart to find out what the problem is unless its serious and must be done.

  4. #4
    Join Date
    Dec 2001
    Location
    The Beaver State
    Posts
    10,439
    The bolt threads may not be stripped but the threads in the head probably are.
    ATVRiders Janitorial Technician


    !!!!!DON'T FEED THE TROLLS!!!!!!

  5. #5
    Join Date
    Feb 2002
    Location
    San Diego
    Posts
    1,237
    Those soft aluminium threads have to be treated right, or out they come
    2000 400ex 11:1 Wiseco,stage 2 Hotcam, WB R4 full exhaust,WB rev box, K&N/OW, 450r carb, no lid, +2 a-arms,Works shocks,GForce axle,chrome stem,fat bars,250r hood, brake blockoff, ASV clutch lever, race cut fender.

    2003 Cr250 White plastics, V Force 3 reed cage.

  6. #6
    Join Date
    Sep 2006
    Location
    Orion, MI
    Posts
    371
    Yeah. I had a feeling it was stripped in the head. How would I fix that? Take the head off and re tap it?

  7. #7
    Join Date
    Mar 2007
    Location
    hobbs, nm
    Posts
    870
    when i had some stripped i took them to a local mechanic and he welded up the holes with aluminum and then retapped them and they were good as new
    2005 trx 450r

  8. #8
    Join Date
    Oct 2007
    Location
    Haughton, LA
    Posts
    1,511
    I got mine heli coiled. Its a stainless insert and there is more surface area to grap on to. Havnt had a problem since.

  9. #9
    Join Date
    Sep 2006
    Location
    Orion, MI
    Posts
    371
    Alright thanks guys for the info. I will prob have that stainless insert added. Was it expensive?

  10. #10
    Join Date
    Oct 2007
    Location
    Haughton, LA
    Posts
    1,511
    You could prob get it done by a machine shop cheaper than buying the kit yourself. I think the kit is around $30, but a machine shop would prob do it for around $10.

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