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    930 CV joint bolt torque ?
    #1
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    930 CV joint bolt torque , (3/8 -24 thread) ?

    Gear One calls out 90 ft-lbs torque with blue loctite for the CV bolts on there Center Board Hubs. I used this on my Center Board Hubs and the bolts have never came loose.

    On the CV bolts that go into the drive flanges at the transmission, I used 65 ft-lbs torque and red loctite.
    The following is drive flanges I have:
    40 Spline Adapter Chromoly Drive Flange For Type-2 Bus 091 Or 094 Transmission To A Porsche 930 Cv
    The bolts keep coming loose.

    When I looked on the Web people are using between 40 ft-lbs to 65 ft-lbs torque, some use no loctite, some use blue loctite, some use red loctite on drive flanges like mine.

    I thinking about using 90 ft-lbs torque on the CV bolts in my drive flanges, I do not know if the drive flanges can hold up to a 90 ft-lb torque. Has anybody used 90 ft-lbs torque with this kind of drive flange?
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    Re: 930 CV joint bolt torque ?
    #2
    Millenium Member plkracer's Avatar
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    90 ft-lbs on a fine thread 3/8 bolt? What bolts are you using? They must be 250 ksi or better. I am typically around 40. Astm calls out 37 lubricated to 50 for dry bolts to reach the 75% clamp load for a grade 8. Proof load is 90% of the bolts strength, but should only be used for single use fasteners.

    I use a green loctite from Case, and it is listed as extra heavy. I have not had them come loose yet. It forms a more flexible bond than typical loctite, and is made for heavy vibrations.
    Last edited by plkracer; 04-02-2014 at 10:14 PM.
    Proud owner of a two seat pucker-mobile. Funco inspired mini buggy powered by a Busa. Giving out free rides to anyone brave enough.
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    Re: 930 CV joint bolt torque ?
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    The Wizard bdkw1's Avatar
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    Depends on the bolts. What ever the max torque is for the bolts you are using + red locktite or even better, Vibra-tite and safety wired.......
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    Re: 930 CV joint bolt torque ?
    #4
    Keeper of the Asylum K-fab's Avatar
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    I've always torqued to 40 and used red loc-tite (grade 8 bolts)
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    Re: 930 CV joint bolt torque ?
    #5
    Millenium Member plkracer's Avatar
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    Make sure your threads are clean. Every time I grease my cvs I always get it in the bolt holes, which then ends up on the threads. Clean it out, shoot the threads with a healthy dose of carb cleaner, then put a drop of loctite on. Too much loctite won't help. If the red doesn't do, it is time to safety wire.
    Proud owner of a two seat pucker-mobile. Funco inspired mini buggy powered by a Busa. Giving out free rides to anyone brave enough.
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    Re: 930 CV joint bolt torque ?
    #6
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    I going to try some Stage 8 bolts for CV joints
    #8323 CV JOINT 3/8-24 X 2 1/2@| Stage 8
    I have used Stage 8 bolts in other areas of my buggy and they stop the bolts from coming loose.
    When I get them installed , I will post some pictures.
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    Re: 930 CV joint bolt torque ?
    #7
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    Heres the link showing the Stage 8 bolts on my buggy

    https://www.minibuggy.net/forum/drive...ome-loose.html
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