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mini cooper steering rack same as 308?

Discussion in 'Technical Q&A' started by stacy, Apr 1, 2004.

  1. stacy

    stacy Karting

    Nov 2, 2003
    104
    halifax
    I saw a post on another board claiming that the steering rack on the 308 is the same as that in a mini cooper (the old one). Sounds hard to believe but I found some pictures on the web and it looks very similar. Internal parts are available cheap for it including that bushing that wears out.

    Anybody know anything about this?
     
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  3. theunissenguido

    theunissenguido Formula 3
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    Jan 21, 2004
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    #2 theunissenguido, Apr 2, 2004
    Last edited by a moderator: Sep 7, 2017
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  4. theunissenguido

    theunissenguido Formula 3
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    #3 theunissenguido, Apr 2, 2004
    Last edited by a moderator: Sep 7, 2017
  5. theunissenguido

    theunissenguido Formula 3
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    #4 theunissenguido, Apr 2, 2004
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  6. theunissenguido

    theunissenguido Formula 3
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    the messures are : steering rack complet without the track rod joint 960 mm.
    Between the rubber gaiters : 460 mm. The shaft that sticks out is 30 mm and 14 mm diameter. The shaft to put the track rods on are 12,6 mm diameter.Any other messures needed, please ask. I have no 308, so I cannot tell you if the messures are the same. Cost for a cooper rack : reconditioned 30 £ RHD, reconditioned 50 £ LHD, NEW RHD or LHD 62 £, sportrack RHD 140 £.
    Guido
     
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  8. 308GTS

    308GTS Formula 3

    Dec 27, 2001
    2,220
    TN
    308 rack
     
  9. vince308

    vince308 Formula 3

    May 23, 2003
    1,303
    belgium
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    vincent
    so guys, thanks a lot, but what is the conclusion after you pictures ????

    IS IT THE SAME OR NOT ????????????????????????????

    let us know, thanks , vincent
     
  10. 4re gt4

    4re gt4 Formula 3

    Apr 23, 2002
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    Hans E. Hansen
    Yes, follow up on this! FofUK says that the 308 rack is no longer available.

    Probable other critical dimension: Dia and spacing of where mounting bushings/brackets go.
     
  11. Mike328

    Mike328 F1 Rookie
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    Oct 19, 2002
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    There's no way you can conclude this by looking at the pictures. You'll need the specifications of each, or else somebody's going to have to throw in the "Pounds" and give it go themselves.

    --Mike
     
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  13. theunissenguido

    theunissenguido Formula 3
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    Can you give us the messures of the 308 rack ?
    Total length, length between the 2 rubber gaiters, size of shaft to put steering column on + diameter, and diameter of shaft where track rod joint fits.
    Guido
     
  14. Dave

    Dave F1 Rookie

    Apr 15, 2001
    2,722
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    From my steering rack rebuild thread...

    "The piston length is 27 1/2"
    the rack housing is 22 1/2" long
    the rods are 8" each not including rod ends
    and the end of the driver side rod housing to the steering pinion center point is 3 1/4"
    The rack housing mount points are adjustable to a degree,
    but are on 12" centers."

    I hope this helps,
    although it's seems to be a non issue to me as the only part internally that need replacing in most cases, the passenger side bushing, is not only inexpensive, but also available in abundance.

    For Example, Norwoods.
     
  15. Philjay50

    Philjay50 Formula Junior

    Jan 16, 2003
    594
    Chester, England
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    Philip
    I am struggling with this one, my logic for what it's worth says to me that a rack to move a fairly heavy car (308) with very large tyres v a smaal light car with relatively skinny tyes will not be the same somewhere. The internal pressures, if the 308 is anything like my Mondial must be massive compared to shifting a mini about.

    Just a thought for consideration.

    I am looking for a conversion to power steering on the mondial if anybody has an idea.
     
  16. snj5

    snj5 F1 World Champ

    Feb 22, 2003
    10,213
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    Russ Turner
    In addition to retro-fitting a Mondial t power steering rack system, there are some aftermarket powersteering racks available.

    Usually Norwood's is the best to discuss things like this - they are really not bound by the usual Ferrari paradigms. They might could engineer some brackets to mount the pump - I think the actual Mondial t rack will almost bolt up.

    best
    rt
     
  17. theunissenguido

    theunissenguido Formula 3
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    #14 theunissenguido, Apr 3, 2004
    Last edited by a moderator: Sep 7, 2017
    If I'm right : 960 mm gives 960:25.4 = 37 4/5" result for cooper rack
    The 308 rack housing is 22 1/2" + rods(2 X 8")16" = 38 1/2"
    So the diffirence in length is neglectable.
    Other cooperrack qualifications :
    The length rack housing side to center steering pinion is only 40 mm
    or 1 1/2".
    Also the position of the steering pinion is not 90 ° to the rest of the rack.When I see the picture of a 308 rack, this is 90 °.

    The mount points are about 300 mm ( 11 4/5" )from one other also adjustable for about 1". The same as a 308 rack.
    The only thing that wurrys me is the diffirence in angle to the steering pinion.
    Maybe this can be compensated by the lower joint of steering column. And also the hole where the steering pinion goes inside the car.
    The only way is to prove it by experience. Someone with a 308 in rebuild can try to put an old cooper rack in place ot the original.
    Guido
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