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334mm disc replacement

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markw8 View Drop Down
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  Quote markw8 Quote  Post ReplyReply Direct Link To This Post Topic: 334mm disc replacement
    Posted: 05-Feb-2011 at 22:30
I'd been putting this off for as long as I could, but eventually I got around to replacing my front discs. I have the sport model with the 2FN calipers and 334mm discs. The stealer wanted £600+ for the pair and Godspeed wanted £510 to make them up specially. I then came across this site:

Apec braking search by size

Here you can put the dimensions of your discs with a tolerance e.g +/- 2%.
Out came the discs DSK2735, for the Mercedes R129 SL320/500/600 01/99-04/02 which were very close in size:

           Passat     Mercedes
Diameter     334mm      334mm
Hub Dia       68mm       67mm
Depth/Hat     52mm     51.6mm
PCD        5x112      5x112

So I bit the bullet and bought them from Euro car parts for £71 each plus 20%tax for the original Pagid/ATE cross drilled disc for an SL500 Part No.: 104220558. I took them to a machine shop and had them machine the hub centers (67>68mm) and the wheel bolt holes drilled out to 14.3mm. I then took them to my local repair shop and had them fitted.

Costs were:

Discs      £170
Machining   £40
Fitting     £70
Total      £280.00

Note: Apec DSK2735 (ventilated only £120 a pair on Ebay)
Note: Mercedes R129 SL500 front disc on left.



I'll post some pictures of them fitted.

Edited by markw8 - 08-Nov-2011 at 20:23
W8 owner Northampton, U.K.
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W8 - not just a light cluster for Golfs
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RobG View Drop Down
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  Quote RobG Quote  Post ReplyReply Direct Link To This Post Posted: 06-Feb-2011 at 21:35
Wow, that's quite the saving, good find.

I went with the godspeed ones, they're two piece units, so next time i just need new rotors. Will still work out more expensive than that though.
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  Quote Manowar Quote  Post ReplyReply Direct Link To This Post Posted: 07-Feb-2011 at 04:35
And this rotor fits within your stock 16" Atlanta wheels?
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  Quote RobG Quote  Post ReplyReply Direct Link To This Post Posted: 07-Feb-2011 at 12:34
I think the uk spec cars with the 334mm discs all came fitted with 17" rims as standard.
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  Quote markw8 Quote  Post ReplyReply Direct Link To This Post Posted: 14-Feb-2011 at 21:47
Yes my car came standard with the 17" Madras rims and 334mm rotors. The best conversion if you want to upgrade to the 334mm rotors is to go with the Porsche 6 pot calipers which come with adapters for the VW hubs. You would need to fit at least 17" rims but they are worth it as at > 1800kg, the W8 takes some stopping from high speed.
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  Quote gods_dad Quote  Post ReplyReply Direct Link To This Post Posted: 26-Sep-2011 at 15:23
Sorry to dig up an old thread, but I am guessing that these got fitted and worked fine?

I am looking to replace the discs on my W8 and having a really tough time getting them for sensible money (under £500)!
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  Quote dmcdmc Quote  Post ReplyReply Direct Link To This Post Posted: 26-Sep-2011 at 16:06
You needing discs as I have a pair that have very little wear that could come your way.

Alternatively Godspeed can make you some up for around £450
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  Quote gods_dad Quote  Post ReplyReply Direct Link To This Post Posted: 30-Sep-2011 at 14:31
I thought I would just post up my progress for anyone else coming to this thread at a later stage.

As MarkW8, I have decided to go the Merc route after finding no viable after market alternatives.

The part numbers for the Merc brakes are:
A1294212112 for the solid discs
A1294212312 for the drilled discs

The centres will need to be machined to 68mm and I will find out if the wheel nut holes need to be modified and post up. I have ordered the brakes from Merc directly at a cost of £80 plus VAT each and I hope to be able to have them machined by a pal for a crate of beer!
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  Quote mperew8 Quote  Post ReplyReply Direct Link To This Post Posted: 30-Sep-2011 at 18:46
I tried looking but with out luck I replaced mine last year ( the larger sport model rotors) with a set from Pilenga. I thought I bought them from partsgeek.com but I couldn't find them when I looked today. Pilenga are a very good brand as well for those not familiar with them they are the people who make the brakes for Saab Aero's. After a year I've had great results from them as well and I think I only paid about $90 each too. I'd recommend looking for them before going any other route.

-2004 W8 6spd Silverstone Grey.
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  Quote B5crazy Quote  Post ReplyReply Direct Link To This Post Posted: 01-Oct-2011 at 05:01
Originally posted by markw8

The best conversion if you want to upgrade to the 334mm rotors is to go with the Porsche 6 pot calipers which come with adapters for the VW hubs.


DO you have part numbers for these calipers and adapter?

TIA,

Tom
2004 W8 Variant 6MT Pacific Blue/Grey
1992 Cabriolet
2012 Golf R 4dr CW

http://mysite.verizon.net/b5crazy/
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