205 Disc Brake Conversion
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Thread: 205 Disc Brake Conversion

  1. #1
    1000+ Posts PeterT's Avatar
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    Default 205 Disc Brake Conversion

    I've just finished a disc brake conversion for my son's 205. Rather than pay big dollars for a 205 disc brake rear end, I used 306 disc brake trailing arms, calipers, discs etc., together with a 205 beam and torsion bars. It's a simple conversion. There's also the added bonus of some extra track (Mi16 wheels fit under easily) and some toe-in. Here's how they compare in width, hub face to hub face:

    205 GTi drum - 1364mm
    205 GTi disc - 1378mm
    205 with 306 arms - 1390mm

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    '92 205 Mi16
    '90 Mi16x4

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    I might be slow... DRTDVL's Avatar
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    How does that compare to the ZX arms?

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    Quote Originally Posted by DRTDVL View Post
    How does that compare to the ZX arms?
    Probably asking in the wrong country I don't think there are any here!
    Graham

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    1000+ Posts PeterT's Avatar
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    What's a ZX?

    '92 205 Mi16
    '90 Mi16x4

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    1000+ Posts cam85's Avatar
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    They have something like 4.5 neg camber and 3 deg toe in.
    94 205 Gti Classic #9
    91 205 Si
    87 205 GTi Race Car
    http://www.aussiefrogs.com/forum/res...-race-car.html

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    Citroen ZX is effectively the Peugeot 306.



    Their trailing arms are a bit different to the 306 / 205... I've got a spreedsheet with the different toe/camber settings i'll post them up later.

    The ZX is meant to have 0 toe and 1.5 degree camber for the trailing arms.

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    Year..............Make..............Model......... ..........Varient...............................To e..........Camber (degrees/minutes)
    85 - 92..........Peugeot..........205.................. .....1.6 GTI, 1.9 GTI, Rallye.......3.6..........0.5
    85 - 92..........Peugeot..........205 / 309..............Base............................. ......3.1......... 0.5
    93 -->...........Peugeot..........205.................. .....Cab, Van, Base....................3.4..........0.5
    86 - 90..........Peugeot..........309.................. .....GTI.....................................3.8.. ........0.5
    90 - 93..........Peugeot..........309.................. .....GTI, GTI16..........................5............1.15
    94 -->...........Peugeot..........306.................. .....S16, GTI-6..........................4.2..........1.2
    97 -->...........Peugeot..........306.................. .....1.8 16v...............................3.4..........1.2
    98 -->...........Citroen...........Xsara............... .....Base...................................4.5... .......1.2
    98 -->...........Citroen...........Xsara............... .....VTS.....................................5.... .........1.2
    93 -->...........Citroen...........ZX.................. .......Base, 16v............................0.............1
    Last edited by DRTDVL; 20th January 2011 at 12:37 PM.

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    Default thanks for that

    have an s16 rear end and a gti rear beam, been wondering if they mix and match, guess i cant procrastinate much longer now, so thanks for the info, see how they fit into an si now, regards ian

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    Quote Originally Posted by PeterT View Post
    I've just finished a disc brake conversion for my son's 205. Rather than pay big dollars for a 205 disc brake rear end, I used 306 disc brake trailing arms, calipers, discs etc., together with a 205 beam and torsion bars. It's a simple conversion. There's also the added bonus of some extra track (Mi16 wheels fit under easily) and some toe-in. Here's how they compare in width, hub face to hub face:

    205 GTi drum - 1364mm
    205 GTi disc - 1378mm
    205 with 306 arms - 1390mm
    Probably find the handbrake will work a lot better than the disc brake 205 one too.
    Graham

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    Veni Vidi Posti 68 404's Avatar
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    I can't imagine you would get much fade with rear drums on a car that light, and the proportioning valve should control lock up.

    What was the reason you went down this path?

    Dave
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    Hi Peter, was any modification required to the bodywork at all? I don't think I have 1.5cm clearance free on either side but not sure if that is just my car.
    1992 205 Si
    Current: shortened diff (4.4), short shifter, group N top mounts, rebuilt engine and box, solid engine mounts, 1.75" exhaust, strut brace, OMP wheel, GTI suspension & subframe front and rear, lowered 30mm front and rear, solid rear bush, Koni yellows, 306 XT front discs and calipers, ADR compliant braided brake lines, 14" rallye wheels, Dunlop Direzza Z1 Star Spec tyres, immobiliser

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    Quote Originally Posted by 68 404 View Post
    I can't imagine you would get much fade with rear drums on a car that light, and the proportioning valve should control lock up.

    What was the reason you went down this path?

    Dave
    Pedal feel?
    1992 205 Si
    Current: shortened diff (4.4), short shifter, group N top mounts, rebuilt engine and box, solid engine mounts, 1.75" exhaust, strut brace, OMP wheel, GTI suspension & subframe front and rear, lowered 30mm front and rear, solid rear bush, Koni yellows, 306 XT front discs and calipers, ADR compliant braided brake lines, 14" rallye wheels, Dunlop Direzza Z1 Star Spec tyres, immobiliser

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    1000+ Posts djvu205's Avatar
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    Default rear arms

    i think it says at the top of thread why. price and availibility of a 205 disc brake rear beam.
    i would imagine you could pick up a whole wrecked or damaged 306 car very cheap. or sorce the bits cheaper and easier.

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    Quote Originally Posted by Langers View Post
    Hi Peter, was any modification required to the bodywork at all? I don't think I have 1.5cm clearance free on either side but not sure if that is just my car.

    Its not 15mm on either side you would need. It's 12mm total increase so its 6mm each side.

    It's roughly the same as putting a 309 rear beam into a 205 which if i remember correctly is 20mm longer which is very common and i know people here that have done it with no issues.

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    1000+ Posts djvu205's Avatar
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    Default 309 rear beam

    did 309's come out in oz? ive never seen one. they are always talking about them on 205gtiforum

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    Quote Originally Posted by djvu205 View Post
    did 309's come out in oz? ive never seen one. they are always talking about them on 205gtiforum
    There's a few floating around. They were all private imports, from memory.

    306 rear discs is a nice idea. There are a lot of these cars being wrecked, far, far more than 205s!

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    Thanks for sharing that with us Peter. Its invaluable information to the ever continuos "i wonder if it would work" question.

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    Quote Originally Posted by PeterT View Post
    I've just finished a disc brake conversion for my son's 205. Rather than pay big dollars for a 205 disc brake rear end, I used 306 disc brake trailing arms, calipers, discs etc., together with a 205 beam and torsion bars. It's a simple conversion. There's also the added bonus of some extra track (Mi16 wheels fit under easily) and some toe-in. Here's how they compare in width, hub face to hub face:

    205 GTi drum - 1364mm
    205 GTi disc - 1378mm
    205 with 306 arms - 1390mm
    did you use the 205 trailing arm shafts & were the handbrake cables changed to disc type? what model 306's have rear disc brakes? AFAIK only GTi6, S16 & XSi have them.
    Andrew.

    C2 VT​S
    205 GTi

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    Quote Originally Posted by djvu205 View Post
    did 309's come out in oz? ive never seen one. they are always talking about them on 205gtiforum
    by what i've heard, only 7 were ever imported & one of these was lost on a race track. a red S1 was for sale in nth sydney about a year ago... not sure what happened to it.

    much better than a 205 when really pushed .
    Andrew.

    C2 VT​S
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  20. #20
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    Quote Originally Posted by 205puggypower View Post
    did you use the 205 trailing arm shafts & were the handbrake cables changed to disc type? what model 306's have rear disc brakes? AFAIK only GTi6, S16 & XSi have them.
    205 tube
    205 & 306 shafts are identical
    205 torsion bars and arb
    306 trailing arms, discs, calipers and brake lines
    not sure which hand brake cables I'll use yet

    TDi's also have disc brakes, which I used, and come with a handy 22mm arb.

    '92 205 Mi16
    '90 Mi16x4

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    Quote Originally Posted by PeterT
    205 tube
    205 & 306 shafts are identical
    205 torsion bars and arb
    306 trailing arms, discs, calipers and brake lines
    not sure which hand brake cables I'll use yet

    TDi's also have disc brakes, which I used, and come with a handy 22mm arb.
    ahh ok, thanks.

    let us know which handbrake cables you'll use, i'm thinking the 205 rear disc cables will fit. i'm considering doing this conversion with an Si tube.
    neilc likes this.
    Andrew.

    C2 VT​S
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    so is there any news to this thread. which cables were used etc? looking at this for my 87 model
    Lyle

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    Quote Originally Posted by 01YLE View Post
    so is there any news to this thread. which cables were used etc? looking at this for my 87 model
    EAI has new 205 disc brake handbrake cables in stock.
    Graham

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    1000+ Posts PeterT's Avatar
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    Quote Originally Posted by 01YLE View Post
    so is there any news to this thread. which cables were used etc? looking at this for my 87 model
    I shortened the 306 cables.

    '92 205 Mi16
    '90 Mi16x4

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    http://www.ebay.com.au/itm/Peugeot-2...item334748bf37

    Plug n' play.

    I did a rear disc conversion.

    SI rear end, just swapped stub axels and put the calipers and discs on.

    Bought these h/brake cables. I must have bought when the dollar was good as I paid $85 incl postage

    Didnt swap trailing arms either. Just changed stub axels and put the discs and calipers on.

    That conversion seems like more work.

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