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M-Factory diff, drive shaft questions and general frustration.

Discussion in 'Engine, Gearbox, Exhausts & Running Gear' started by cmcquitty, Mar 20, 2017.

  1. cmcquitty

    cmcquitty

    Joined:
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    Location:
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    1Berg2
    Good evening all

    I recently fitted my car with a refurbished 'box with a brand new m-factory diff in it, crown wheel was welded into place and all seals and bearings were done at a cost of £800.

    All was perfect until Saturday and I lost drive to the n/s wheel whilst on a track day in the afternoon. No warning, no bang, no crunch or anything, it sounded like I'd missed a gear until I'd stopped and sussed it out. Jacked the car up in the paddock and the wheel could move forwards/backwards in my hands with the other wheel on the floor. Bugger. The wheel freely spinning is the one not being driven.

    After removing the shaft from the gearbox there were no signs of anything going wrong, no visible metal damage and the diff locked up as usual once I'd bolted everything back in place.

    Skip forward to today and I topped the 'box up with oil and drove the car, same thing has happened again!

    My questions are A - has this happened to anyone before? Any pointers on what it could be? B - do I have the wrong shaft fitted? (changed 6 weeks or so ago for a second hand one, my car is a non-cup and I believe that shaft was from the same sort - is there a difference between them?) C - is my diff knackered? Shaft spins along with the hub, and there are no strange noises, so I don't believe it is.

    Hope someone can help!

    TIA
     
  2. bashracing

    bashracing ClioSport Club Member

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  3. cmcquitty

    cmcquitty

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    @bashracing

    Appreciate the reply!

    I'm not certain that I do in all honesty , from memory I'm thinking probably not. That a diff-out job to fit?
     
  4. bashracing

    bashracing ClioSport Club Member

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    Sorry for the bad news, but yes
     
  5. cmcquitty

    cmcquitty

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    Yay, I love removing gearboxes on my drive :relaxed:

    Thank you for the advice!
     
  6. iw_laurence

    iw_laurence

    Joined:
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    Car:
    172 LB Clio
    Can you keep us posted, looking to order the m-factory diff in the next few weeks. Apart from that issue how have you found the diff?
     
  7. cmcquitty

    cmcquitty

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    Will do.

    It's awesome - well worth the money if you're into track days.
     
    iw_laurence likes this.
  8. bloke

    bloke ClioSport Club Member

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    who built the box?
     
  9. JamesBryan

    JamesBryan ClioSport Club Member

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    These aren't much cheaper than a Quaife then really.

    £795 for the diff, £78 for yoke plate and £120 for pure to fit the crownwheel. £993 total.

    £1030 for a Quaife :monkey:
     
  10. iw_laurence

    iw_laurence

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    Do you get the yoke plate with the quaife diff? and quaife don't charge for crownwheel machining?
     
  11. JamesBryan

    JamesBryan ClioSport Club Member

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    Not sure if the yoke plate is required for a Quaife @NorthloopCup?

    The £1030 includes Quaife fitting your crownwheel.
     
  12. NorthloopCup

    NorthloopCup ClioSport Moderator

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    The yoke plate is part of the design already on a Quaife, so no need to buy one.

    Yep, they fit the crownwheel as well, but the £1030 price is only from me.
     
    cmcquitty, JB21 and JamesBryan like this.

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