Corrado/mk3 stub axle & carrier/caliper change

Discussion in 'Chassis' started by MJA, Apr 18, 2023.

  1. MJA

    MJA Paid Member Paid Member

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    Hi,

    My Corrado rear axle has a R32 conversion kit which looks like it is a standard mk4 stubaxle and bearing kit + abs ring and a custom bracket to allow fitment of R32 carriers.

    Call me mad but I want to revert back to stock 232mm/9mm wide disc as I don't want to have to run 17in wheels on the car and do want to option of running stock 15s from time to time.

    Q on the rear carrier - will a standard mk4 rear caliper and carrier combo (say something from a 1.8t) fit ok against my corrado rear axle? I assume a corrado/mk3 carrier will have a slightly different offset with oem stub axle setup.

    Anything else to think about? I think looking at it that's all it is. I can see the brake lines are differnet but assume i can just re-use what has already been upgraded for the r32 calipers.

    Cheers
    Matt
     
  2. rubjonny

    rubjonny Administrator Staff Member Admin

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    the calipers from the lower spec 'normal' mk4 models will fit (i.e. no 256mm/haldex stuff), but non of the MK4 type carriers are any use to you. instead you want mk2/3/polo type carriers
     
  3. MJA

    MJA Paid Member Paid Member

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    Thanks Rubjonny
     
  4. MJA

    MJA Paid Member Paid Member

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    Actually rubjonny - can i just re-use the original corrado carriers and calipers with the mk4 stubaxle/bearing combo?
     
  5. rubjonny

    rubjonny Administrator Staff Member Admin

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    not sure, but I'd assume not?

    if you like the stronger hub setup you can use the polo 6n/ibiza rear hub setup but theyre getting a bit dear these days. IIRC to go 5 stud you can just bolt the 9N hub on but maybe double check that
     
  6. MJA

    MJA Paid Member Paid Member

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    Ah cheers, I was just looking to keep the good bits already installed to the car rather than reverting back to a stock corrado stub axle. I probs need to get some pics of what I have up on here. Will do at weekend.
     
  7. dodgy

    dodgy Paid Member Paid Member

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    Just as a perusal, do you have the polo rear stubs and hubs, then the r32 disc set up?, I thought the mk4 had a more square bolt pattern on the stub axle, whereas the polo was same as a mk2/3 golf etc so bolts straight on. This was from sorting my caddy van I found you can bolt the mk4 stub straight on, but that's 5x100 mk4 hub so then the mk2 caddy hub fits to revert back to 4 stud, whereas the polo stub can take the 6n2 for 4 or 9n type for 5 stud.
    Bearing size is different between mk4 and polo hubs too.
     
  8. MJA

    MJA Paid Member Paid Member

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    It's a good Q, I need to take the wheel off and get some pics. It came installed with the car. Perhaps it is a polo stub - there is a receipt from JMR with the description "Parts for r32 rear brake conversion" = £900 (gulp).
     
  9. dodgy

    dodgy Paid Member Paid Member

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    The polo/ibiza/lupo/mk2/mk3/fabia stub has a tapered bolt pattern and the mk4 used a chunkier stub with a mire square or rectangular (oblong if you're old) pattern.
    Epytec do an adaptor plate and lists part numbers, so if all bought new I can imagine it was up to that total.

    On the polo I swapped drum to disc, then upgraded to the 256 vented set up straight on, possible only difference between 2wd and 4wd might be the offset and a spacer needed (6mm?) As seen in some kits.


    Not greatest pics but slightly shows the difference of bolt pattern.
    Screenshot_20230420-212419_Chrome.jpg
    Polo/mk2



    Screenshot_20230420-212402_Chrome.jpg
    Mk4
     

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    Last edited: Apr 20, 2023
  10. MJA

    MJA Paid Member Paid Member

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    Thanks Dodgy, that lifts some of mystery and hopefully will fall into place when I get a proper look at it.
     
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  11. dodgy

    dodgy Paid Member Paid Member

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    Think epytec list the bits as lupo or polo 6n2 stub axles, and alternate hubs depending if 4 or 5 stud, possibly just 5 stud listed, then r32/S3 caliper, carrier and disc, like I say not sure if a spacer is needed due to difference between 2 and 4wd carriers, I used leon cupra r set so only fwd anyway and went straight on.
     
  12. MJA

    MJA Paid Member Paid Member

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    Cheers got out there for some pics. I can see an adapter now. 20230421_204345.jpg

    20230421_202858.jpg 20230421_202902.jpg 20230421_203727.jpg
     
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  13. dodgy

    dodgy Paid Member Paid Member

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    MJA likes this.
  14. rubjonny

    rubjonny Administrator Staff Member Admin

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    yep has the original stub axles, with some kind of adaptor fitted to allow for larger discs. so unbolt that and you can go stright back to standard with mk2/3 carriers and mk2/3/4/whatever 2WD calipers

    MK4 alloy type would work with the flexi you have, or swap back to original type flexi if you go mk2/3 type calipers
     
  15. MJA

    MJA Paid Member Paid Member

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    ahh cheers all, simplier than i had thought. I thought there was a different stubaxle but think i will revert back to standard to keep things simple and maximise the upgrade kits value in parts (as i have a full body resto to pay for).
     

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