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WTB Primary Chain Inspection Cover 2006 Mastiff

Discussion in 'General' started by RABBID1, Aug 24, 2017.

  1. bdm7250

    bdm7250 Guru
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    Yup..completely inaccurate, with the thousands of rocker boxes I have done you only need 11.2 to 13.5 newton meters....
    IMG_5630.GIF
     
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  2. cdogg556

    cdogg556 Guru

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    :disappointed:
     
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  3. RABBID1

    RABBID1 Member

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    Wow !!! Thanks for all the input , output , and torque specs...Will be ordering the new billet cover from Donna.....Got to love the forum !!!
     
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  4. bdm7250

    bdm7250 Guru
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    Great choice, Donna and Derek are fantastic..:old2:
     
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  5. pauly

    pauly Active Member

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    Sorry, but I'm with Curtis on the torques. There is no need to do the bolts up that hard
    and risk stripping the threads.

    Paul.
     
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  6. BWG56

    BWG56 Guru

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    Well as I stated many times before, the OP didn't strip the threads, he broke the corner off the CAST plate. In the 9 years I have been on here I never seen a post where someone stripped the threads. They have always broken the CAST plate due to improper tightening of the screws.
    Now with that said, last week I replaced my rocker box gaskets, there are 2- 1/4-20 screws in the center of the rocker arm assembly, around the 0-ring for the CR's, which have the same threads as the inspection cover screws, the torque spec is 15 - 18ft/lbs, yes ft/lbs, that equates to 180 - 216 in/lbs.
    216in/lbs is 2X the torque of the inspection cover screws. I usually shoot for the middle and I did torque them to 200/in/lbs and I did it to 4 of them and none of them stripped the threads.
    Most of the broken cast plates, and I'm willing to bet on this one, came from people seeing a small leak there and they crank down on the screw in an attempt to stop the leak, and what they hear is "tink" the corner breaking off. The rest of them have been broken when installing the screws incorrectly, meaning they don't tighten them down in a X pattern gradually.

    I will say the BILLET plate that he makes now is superior to the cast plate, it will bend instead of breaking but you won't strip the threads at 108 in/lbs.
     
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  7. bdm7250

    bdm7250 Guru
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    Well said, can't argue that's some genius right there..:old2:
     
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  8. jbs1968

    jbs1968 MEMBER

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    46A56E2F-AD68-43FE-9450-7F7B47D7BFDA.jpeg
     
  9. KaptinAmerika

    KaptinAmerika Well-Known Member

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    LOL....a few of the folks on here aren't worth trying to help or educate.
    Sometimes all you can do is walk away shaking your head and move on.
     
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  10. BWG56

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