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break-in recommendations...gears

Discussion in 'SN95 Cobras' started by Snaketamer, Aug 2, 2007.

  1. Snaketamer

    Snaketamer CAM-tastic Established Member

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    Did a search and little came up :??: Was wondering what the recommended break-in was for a new set of gears after being installed?
     
  2. Snaketamer

    Snaketamer CAM-tastic Established Member

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    Guess there is no break-in proceedure...:nonono:
     
  3. 1996_Snake

    1996_Snake Built and Blown Established Member

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    there is no need for break in if the gears are set right.
    That is what my gear installer told me. unless they whine.

    Do they whine?
     
  4. Snaketamer

    Snaketamer CAM-tastic Established Member

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    Not installed yet...Was planning on having them done outa town cuz there is no place to have them installed properly around here. Want it done right the first time.
     
  5. scotty98

    scotty98 8 Ribs Established Member

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    broke mine in leaving the parking lot:beer:
     
  6. MachME

    MachME 2V Power Established Member

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    Drive it short periods to start with, then gradually make the trips longer.

    basiclly heat cycles.
     
  7. SublimeRT

    SublimeRT '94 Slooowbraa Established Member

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    They should always be broken in IMO. I drive around normally for a while and let the new gears get up to temp, then go home and let the car sit for a couple hours to completely cool. I do this 3 times, then let 'er rip. Never had a problem.
     
  8. Snaketamer

    Snaketamer CAM-tastic Established Member

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    Unfortunately the installer is 3hrs away...so heat cycles could be a problem...:uh oh:
     
  9. Toasty

    Toasty New Member Established Member

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    My installer packed my posi with a couple of extra friction plates when he rebuilt the posi and installed my gears. He indicated a 500k (~350mi) of 'taking it easy, especially around corners. After the 500k limit, he had the car back in his shop, changed the fluid, checked the posi 'preload', and the backlash (part of the initial cost). My gears are whine free and my posi is very tight.

    If you have your diff rebuilt like I did, the new bearings will take a bit of time to break in, just like in a new engine.

    Anyone who says that a metal on metal piece of machinery needs no break in period is a little off...
     
  10. 1996MysticSnake

    1996MysticSnake Active Member Established Member

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    If theyre installed right there is no break in procedure guaranteed. If theyre setup wrong no matter how you attempt to break them in ur gonna have a problem.

    I had my 4.10s put in at the local shop where they do all the drag cars and about 10-15 mustangs a month. I asked him how to break them in and he told me a 1/4 mile at a time.

    Theyve been in for a few thousand miles and no whine or problems. Theyre already heat treated when they are made so there is no reason to heat cycle them.
     
    Last edited: Aug 3, 2007

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