Torsendiff 504??
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  1. #1
    Fellow Frogger!
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    Default Torsendiff 504??

    Hi, I wonder how I can improve the handling on my 504, I now have an original diff (LSD) from a 504 pick-up (4.875 ratio), it works well I think. Peugeot 405 mi16 4X4, do have a Torsendiff in the rear, it might be a good idea to mount it in a 504 ? . Can I do it? Comments are appreciated. Still want a 4,875 ratio. It seems to be the same type of final drive (PC7) in a 405 and 504.
    The car is mainly used to drive on ice, and sometimes on gravel mixed with an asphalt, it's a race car.


    /Bobby

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  2. #2
    Fellow Frogger! Molerpa's Avatar
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    Sorry, there is nothing I can say to help you, I don't know the system very much, just saw a few times on the T16 and Mi16 x4 and SRi x4... but if you do it, PLEASE upload pictures, I want to see that!


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  3. #3
    1000+ Posts PeterT's Avatar
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    Yes, the Torsen diff can be fitted to 504/505 diffs. The reason being, the Mi16x4 has a 505 diff, but with a longer ratio 3.307:1.

    '92 205 Mi16
    '90 Mi16x4

  4. #4
    Fellow Frogger! Molerpa's Avatar
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    so, is the same differential???


    Quote Originally Posted by luthier View Post
    It is simply impractical to expect a petrol motor to get through too much water. That's why God invented diesels.

  5. #5
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by PeterT View Post
    Yes, the Torsen diff can be fitted to 504/505 diffs. The reason being, the Mi16x4 has a 505 diff, but with a longer ratio 3.307:1.
    Isn't that a rather tall ratio for a sporty car? It's that same as the manual GTDt.
    504 GL Coupe '73 Silver
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  6. #6
    1000+ Posts PeterT's Avatar
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    It's not used in the actual gearing. It's just the reverse of the transfer box output which is 1:3.307. The cwp is the normal 4.43:1

    '92 205 Mi16
    '90 Mi16x4

  7. #7
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    Quote Originally Posted by PeterT View Post
    It's not used in the actual gearing. It's just the reverse of the transfer box output which is 1:3.307. The cwp is the normal 4.43:1
    The grey matter's getting a workout now. I take it there's a centre diff (transfer box) so where does this sit in relation to the diff for the front which I assume looks like a conventional fwd engine and diff/gearbox combo.
    504 GL Coupe '73 Silver
    504 GTDT Pickup Mini-Motorhome '83 Coral Red
    407 HDi Sedan '05

  8. #8
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    Default Quaife

    Why all the stuffing around?
    Just buy a Quaife, this is a torsen style diff, and fit it to your present crown wheel.
    Contact Quaife in the UK, they sold a few 505/504 units recently so should have some in stock.
    graham

  9. #9
    1000+ Posts PeterT's Avatar
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    I think I'd use a Torsen in preference to a Quaife if I had one. The T16 also has the same diff but with a slightly different ratio. Meaning you can't use a T16 transfer case with an Mi16 rear diff, otherwise the car would tear itself apart.

    '92 205 Mi16
    '90 Mi16x4

  10. #10
    1000+ Posts PeterT's Avatar
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    Fyi..
    Attached Thumbnails Attached Thumbnails Torsendiff 504??-torsen.jpg  

    '92 205 Mi16
    '90 Mi16x4

  11. #11
    Budding Architect ???? pugrambo's Avatar
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    it all makes sense seeing as when the 205 was made and i remember seeing a rally 205 pic with all it's bits laid out the parts bin in the pug workshop had 505/604 parts in it

    they were still in production so it made sense to use what was there seeing as peugeot were not going through a very profitable stage at that point

    the production of the road going 205 i think saved peugeot from near financial disaster

    i'll have to try and find the pic of the 205

    i think there is also a pic of it in one of the books about the 205 and you will see two 505/604 diffs
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  12. #12
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    Default 504 Torsen?

    Hi my 504 has 132kw at the rear wheels and the only diff that seems to work is the quaife. i set the diff up myself its very simple and i have to say it has transformed the car, the quaife works very very well, it behaves like a normal open diff when driving quietly and when driving hard, the torque biasing characteristics work very well to maintain traction. which is a testament to the genius of the design. Its not savage like a locker diff is, so you hardly notice its there, and if your feeling spirited it will lock both rear wheels when you need it. plus they are available brand new as graham has suggested.

  13. #13
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    Thanks for the comments. Which works best, Original 405 mi16 Torsen or Quife? Is there any difference between them??
    I can buy a used 405 diff for about 200 euros, at a Automobile junkyard, a new Quife diff is much more expensive.

  14. #14
    1000+ Posts PeterT's Avatar
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    I can only speak of my experience of the Torsen in the Mi16x4. It's sensational on the track. At 200 euros is a bargain.

    '92 205 Mi16
    '90 Mi16x4

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    Fellow Frogger! MIKEEE's Avatar
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    From my research, Quaife and Torsen are the same thing essentially, and have the same characteristics mechanically.

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  16. #16
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    Quote Originally Posted by PeterT View Post
    Yes, the Torsen diff can be fitted to 504/505 diffs. The reason being, the Mi16x4 has a 505 diff, but with a longer ratio 3.307:1.
    Is there any possibility that 3.307 is a typo and actually 3.703 ?
    The reason I ask is that the tech docs for my 604 say that the diff is ratio 0.207
    1 / 0.207 = 3.703

  17. #17
    1000+ Posts PeterT's Avatar
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    No, definitely 3.307 or 43 x 13 teeth.


    If you'd like copy of this document and how the x4 system and Torsen diff works, send me your email address.
    Attached Thumbnails Attached Thumbnails Torsendiff 504??-405x4-cwp-data.jpg  
    Last edited by PeterT; 16th January 2012 at 12:26 PM.

    '92 205 Mi16
    '90 Mi16x4

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