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Thread: Front LSD but Open Rear

  1. #1
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    Front LSD but Open Rear

    Was just wondering... Would it be a silly if i was to replace just the front diff center with an LSD (KAM) simply because it was available without doing the back as well.

  2. #2
    Tombie Guest
    Yes it would...

    Put it in the back...

  3. #3
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    Yeah much better in the back...would drive a bit wierd with it in the front!

    Jools

  4. #4
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    Quote Originally Posted by Tombie View Post
    Yes it would...

    Put it in the back...
    This doesn't help me much. Why exactly is it a silly idea? It was a serious question and i'm willing to listen to valid opinions and there is a good chance you have one so please share it. I would put it in the back but apparently it only fits in the front. I thought Rover diffs were the same front and rear so it has me kind of puzzled why it is specifically a front diff.
    http://www.kamdiffs.com/shop/kam631-...ntial-carrier/
    Last edited by Jazzman; 7th April 2014 at 09:21 PM. Reason: More info to add.

  5. #5
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    Range Rover, in their Infinite Wisdom chose to put 'Traction Control' on the rear-only of my Classic.

    No doubt they could have done the front (only) if they thought it would be better.
    Only speculating, but in an off-road, heavy situation, losing REAR traction is less controllable then losing FRONT.
    - I suspect in this matter they know something that I don't...

    Why only one axle is another question - maybe co$t.

  6. #6
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    Having a traction aid only in the rear diff will generally result in higher capability, than having the same traction aid only in the front diff.
    That said, I ran an LSD in the front of my County for a year or so before putting a locker in the rear. Despite what others have said, it did not drive a bit weird, didn't drive weird at all.
    Some brands of LSD have a different bias in those made for the front versus those made for the rear. A rear should be a bit more aggressive than a front, if anything. I doubt there's a compelling reason for it only being suitable for the front of a Rangie...

  7. #7
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    Quote Originally Posted by isuzutoo-eh View Post
    Having a traction aid only in the rear diff will generally result in higher capability, than having the same traction aid only in the front diff.
    That said, I ran an LSD in the front of my County for a year or so before putting a locker in the rear. Despite what others have said, it did not drive a bit weird, didn't drive weird at all.
    Some brands of LSD have a different bias in those made for the front versus those made for the rear. A rear should be a bit more aggressive than a front, if anything. I doubt there's a compelling reason for it only being suitable for the front of a Rangie...
    Is the County constant four wheel drive? Did it effect your steering?

  8. #8
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    Yeah constant 4wd, lt95 same as most rangies had.
    Steering is a very slight amount heavier ( not noticeable after the first few minutes drive), and return to centre is quicker, otherwise no change on-road.

  9. #9
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    You'll find the plates won't be as 'tight' when setup for the front.

    The beauty of a plate type LSD (commonly referred to as a Salisbury LSD, but that'll just confuse the Land Rover crowd ) is the the amount of lockup can be altered substantially from almost fully open to almost totally locked by changing the preload of the clutch pack/plates and ramp angles.
    IIRC the characteristic of the lockup is changed by the ramp angle, ie. how aggressive the amount of bias comes in.

  10. #10
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    Ah, good point Rick, the KAM LSD is a friction plate type, the ATB I have in my County is a geared type. I have no experience with plate type LSDs.

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