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B5 perches and rs4 r-arb fitted by Adamss24

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by matthew999, Feb 22, 2013.

  1. matthew999
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    matthew999 Member

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    Big thanks to Chris for fitting the above, a very nice bloke who knows his stuff :) I have wanted to do this for a long time and after an epic day with 2 seized pinch bolts, freezing conditions and a few specks of snow for good measure, all fitted and I'm very happy with my level stance and firm rear end. :rolleyes:

    Cheers

    Matt
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  2. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    What is it with these pinch bolts? When I had my lowering springs fitted in November, the garage had the same problem.

    Some pictures some time maybe?
    #2
  3. adamss24
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    adamss24 Well-Known Member

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    There are dissimilar metals and the alloy will corrode around the steel bolt- pain in the proverbial when you're trying to free them without heating them and trying to save the rubber balljoint covers ! A little smear of copper grease will work wonders and stop it from seizing. Greasing the pinch bolt should be a yearly maintenance item...
    The car looks and handle ace Matt ! Could do with a little bit more power !!!
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  4. crazy88
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    crazy88 Loving the anonymity

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    I agree with Chris, copper slip on the pinch bolt is now part of my annual maintenance after 6 hours removing them on mine.

    Glad you got the work done though, I've been tempted by a rarb on mine for sometime now. But I want a quatrro more, then I might replace the rarb.
    #4
  5. matthew999
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    matthew999 Member

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    Hi Jeff,

    Shes a bit grubby but here you go
    _DSC0001.jpg
    _DSC0002.jpg
    thanks for the comments on the car Chris, i have to take the last bit with a pinch of salt as you are a V6 junky :)

    cheers

    matt
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  6. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    Nice; now get out there with your (two) buckets and give her a good clean! :beerchug:
    #6
  7. Chr1sch
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    Chr1sch Member

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    excuse my blissful ignorance but what the heck are B5 perches and what is the advantage of an RS4 arb? (I have a 2.0T Quattro Avant) so pretty keen :))
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  8. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    The perches in question are the mounts at the top of the front coil springs. The ones from the B5 generation A4 fit the B6 and B7, but have the effect of lowering the ride height by more just what lowering springs alone would achieve.

    An anti-roll bar (ARB) is a metal bar sitting cross ways, connecting front and left suspension assemblies. As the name suggests, they reduce the car's innate desire to roll in corners. The thicker the anti-roll bar, the more roll stiffness is achieved. By a curious quirk of geometry, increasing rear roll-stiffness on its own has the effect of reducing understeer and making the front of the car more responsive to steering inputs. Increasing front roll stiffness on its own has the opposite effect, and increases understeer.

    The rear anti-roll bar on standard A4s is 16mm thick, The S-line is 18mm, the S4 20mm and the RS4 22mm. Those increases might not sound much but due to another quirk of geometry, a 22mm bar has almost double the roll stiffness of a 16mm bar.

    If you fit an RS4 rear anti-roll bar, you will vastly improve your car's handling without impacting on the ride. The parts cost slighlty under £100, and it takes about two hours to fit.
    #8
  9. adamss24
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    adamss24 Well-Known Member

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    No, the spring perches are the metal platforms on which the spring sit at the middle of the shock, the b6/b7 is alloy and the b5 is pressed steel. On Matt's car the antirol bar was still a 16mm jobbie- which i was surprised as that's a full sport spec ! On my a6, the rear antiroll bar was 20mm and upgrading to rs6 rear antiroll bar wasn't quite what i was expected but still pleasant upgrade nevertheless ! On a quattro you don't get as much of an improvement because the chassis is very grippy as it is, stiffening the rear just makes everything tighter- funny to explain but it feels like getting quality sports springs in there that's how much it improves the ride !
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  10. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    Ah, beg your pardon, thanks for the heads-up. :thumbsup:
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  11. adamss24
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    adamss24 Well-Known Member

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    That's ok mate, no need for apology !
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  12. matthew999
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    matthew999 Member

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    @ jeff, Yeah double bucket and lambs wool mitt is the only way, Juicy gen is an expensive habit. Ill hopefully get out over the weekend to give her a clean its just so cold atm.

    @crazy, get it done r-arb is best mod for your money. Perches on front are just if the reverse rake is irritating you and are a massive ball ache to do. At least front suspension arms are all nicely greased up if I want to upgrade springs later. Just need to convince her first :)

    Cheers

    Matt
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  13. Chr1sch
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    Chr1sch Member

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    That's awesome, may have to get me an arb by the sounds of it!
    #13
  14. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    Do it; you won't regret it for a minute.
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  15. ajax1976
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    ajax1976 Active Member

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    This inspired me today to finally get the finger out and do mine today and I'm so glad I did. Less than an hour and £60 and the car's transformed. There surely can't be another mod that is so easy, quick and cheap to do yet makes such of a difference to the cars handling, Fantastic!!
    #15
  16. g00se
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    g00se Member

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    just a v.minor correction... the B6 S4 had a 20mm bar, but the B7 S4 and RS4 both have the 22mm bar.

    goose
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  17. pburv
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    pburv Member

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    Hi I,m sure this has been covered before but could anyone give a complete list of the part numbers for fitting rs4 rear anti roll bar ..Also a rough estimate of the cost of parts..and also where I could order one from..Many Thanks Paul:racer:
    #17
  18. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    I think I may know where to find them, but it could take a while. Bear with me.
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  19. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    Click on this link, and go to post number 28.
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  20. ajax1976
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    ajax1976 Active Member

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    One thing that confused me when i did mine was that the bushes I removed were exactly the same part number as the new ones I'd bought for the thicker bar, same part numbers as the ones quoted in various threads. When clipped on the bar they looked too small but when offered up to the car with clips on and tightened up them seem to sit nicely round the bar.
    I didn't bother changing the drop links either, ball joints felt fine so left the originals on.
    #20
  21. pburv
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    pburv Member

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    Thanks jdp1962..I assume you can order the parts from any Audi dealership?:salute:
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  22. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    Yes, provided you go to them with the part numbers. If you tell them what car you have (i.e. an A4) and say you'd like to upgrade the anti-roll bar, they'll typically tell you those parts aren't for your car, and won't fit. Just give them the numbers of the parts you want without saying what car they're for, and they'll just accept the order.

    Weird!
    #22
  23. pburv
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    pburv Member

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    That,s the germans for you:blackrs4:
    #23
  24. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    Most of the people at my local Audi dealer are English.
    #24
  25. pburv
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    pburv Member

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    That,s what they would like you to think:eyebrows:
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  26. pburv
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    pburv Member

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    Hi all. I have done a bit of adding up with the list of parts and pricing that jbcalvin gave and the price my local garage are going to charge for fitting the rear anti roll bar and it all comes to £140.00. Does this sound about right for this job? :ermm:
    #26
  27. ajax1976
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    ajax1976 Active Member

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    If that price includes the parts and labour to fit then yes I'd say that was a very fair price.
    #27
  28. pburv
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    pburv Member

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    Yes it does include all the parts plus labour..The prices I got for the parts were off another thread by jbcalvin . So not sure if they are exact..The labour I was quoted was £17.50 for half an hour to fit the rarb..Thanks ajax1976
    #28
  29. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    God almighty! Where do you live that has a going rate of £35 an hour?!
    #29
  30. S4P4UL
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    S4P4UL Member

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    It's £45 a hour round here
    #30
  31. jdp1962
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    jdp1962 Grumpy Old Moderator Staff Member Moderator

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    My local indie charges £66, and that is a massive bargain round here.
    #31
  32. pburv
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    pburv Member

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    North Wales:tumble:
    #32
  33. pburv
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    pburv Member

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    Just to give you all an update on the Rs4 rear anti roll bar.. I ordered the parts yesterday all for a grand total of £144.88. Will be getting them on Wednesday and hopefully getting them fitted Thursday:jump:.Will let you know how I get on...Paul
    #33
  34. V6 Quatt
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    V6 Quatt Member

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    Made a big difference to my Quattro -recommended
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  35. Tiffy
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    Tiffy Member

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    Talk to me about these Cups???...

    Amy Audi seems to sit nicely at the rear but a little high at the front as standard, standard suspension fitted. By fittings these cups to the standard set up, would they drop the front end slightly????
    #35
  36. Tiffy
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    Tiffy Member

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    That's ment to read "My Audi" incase you thought I have nicknamed my car Amy..... Lol.......(She's a "Jesabelle")
    #36
  37. craichouse
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    craichouse Member

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    back to the PERCH PLATES, what kind of a drop will it give the car on its own?
    #37
  38. ajax1976
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    ajax1976 Active Member

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    I never actually measured mine but would guess at around 15mm.

    I have lowering springs on so two pictures are just for comparison.

    35mm H&R springs on standard perches

    [​IMG]

    35mm H&R springs with B5 perches

    [​IMG]
    #38
  39. craichouse
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    craichouse Member

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    thank you sir, i could not have constructed a better reply if i had done it myself. :applaus:
    #39
  40. ajax1976
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    ajax1976 Active Member

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    Cheers mate,

    I'm a B5 perch expert now, I only finished putting them on a couple of hours ago!!!

    Not too a bad job tbh.
    #40

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