Engine Drivetrain 1st Gen Cooper Midlands 5 Speed Overhaul Manual

Discussion in 'Tuning and Performance' started by Nathan, May 11, 2015.

  1. Nathan

    Nathan Founder

    Mar 30, 2009
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  2. BlimeyCabrio

    BlimeyCabrio Oscar Goldman of MINIs
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    May 4, 2009
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    Dang. That looks like so much fun, now I wish I had a blown Midlands.
     
  3. MCS02

    MCS02 Moderator
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    I think you had enough fun with the automatic rebuild. :biggrin5:
     
  4. Steve

    Steve Administrator
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  5. mattc85

    mattc85 Active Member

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    Thanks Nathan. I downloaded it, I'll need that soon enough. I should buy one that's already blown and fix it so I'll have one ready when mine finally gives up.
     
  6. RallyMini370

    RallyMini370 Well-Known Member

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    If anyone needs any advise on building a Midlands let me know....I think I'm becoming an expert!
     
  7. RallyMini370

    RallyMini370 Well-Known Member

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    The Midlands got an up-grade!

    20150620_140333_zpsqvg1f7i1.jpg
     
  8. RallyMini370

    RallyMini370 Well-Known Member

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    Seems I'm the CR guru now
     
  9. RallyMini370

    RallyMini370 Well-Known Member

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    Here's a few photos regarding the C clamps and my straight cut gear set.

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    This is what happens with low oil.

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    The 3 types of Mini synchro rings. Peugeot uses the one piece non fiber ring


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    For sure the torx bolts will round off so I weld a nut on. When rebuilding a Midlands it is always wise to buy the 4 C clamp bolts and at lease 1 or 2 bearing plate bolts.

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    When the C clamp wear the 5th gear inner hub gets worn away

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    The forks wear away too!

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    Here's a worn and broken C clamp.

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    New clamps from Eminiparts.com

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    I collect the Midlands boxes mainly for spares.

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    The Peugeot gear set has a C clip instead of a nut

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    Straight cut set with Gripper LSD. I went for the straight cut synchro set instead of the dog box because my Mini is a daily driver.

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    When the gears or crown wheel let go the casing is always busted.

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    My swap from a normal gear set to straight cut. I went for a straight cut crown wheel and pinion too!

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    This is what happens when you don't change the oil on a regular basis! Sludge in the oil ways....not good.

    [​IMG]

    Peugeot rings.
     
  10. daviday

    daviday Active Member

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    Amazing. Hope all is well Chris.
     

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