S2 coupe rear brake kit

[VilkkuS]

PS. I have drilled disks....so this might not even be possible.
Disks might crack

Is there any 280/22mm disks that would fit in this set?
A3 front?

[_ShurikeN]

http://www.s2forum.com/forum/showthread.php?t=74573

[GazzaG60]

guys a quick one.

bought tyhis kit from pete a few years ago and just fitted it. the calipers wont go over the discs and new pads.


do we need to skim the pads down or do I have the wrong calipers. seems not wide enough to fit it in. also caliper looks identical to what I took off the car.

[Sonic]

The discs need to be cut down from 300mm to 280mm iirc. I found my car also already had the calliper on.

[GazzaG60]

but the caliper wont og over the disc and pads. disc is fitted, 280mm no worries. caliper wont go over . I reckon I could shave the pads but is this what needs doing. calipers are stamped 38 but piston looks visibly, not measured bigger than the capiper I took ofrf.

a bit miffed at mo tbh.

how tight was it to fit.

[Sonic]

Ah sorry i see. It definitely wasn't that tight - it all just fitted nicely.

[GazzaG60]

pretty sure I got the wrong calipers in the kit way back then. just never noticed.


either that or I got another set somewhere hidden but 100% doubt this.

O bolicks

[Error404]

Yes mate, you've been mugged off with stock calipers. URS4 calipers are 41mm

[twoqu]

Like Alex says the castings have 41/43 cast on them. I always thought they were 43mm piston diameter so not sure what 41 relates to unless the same casting is used for different piston sizes relative to the disc diameter.

[GazzaG60]

it appears that way. anybody got some to measure the internal dimensions.

think im gonna skim the pads down for now or use stock.

problem after problem recently.

[twoqu]

If you orientate the caliper so the piston is observable, then the recess inside the caliper is 63mm. The piston protrudes further but that of course can vary!

[VilkkuS]

No problem here, to fit new pads, disk and UrS4 calipers.
I did read too quickly this topic, and I didn't notice that I have to machined 300mm disks to 280mm
I bought 300mm drilled disks first, and those were not able to machine 280mm, because some of the holes were too near y th edge, and it would been crack if machined. So I need to buy another ones (solid 300mm disks) and those did the job.

[Colesy]

This is a URS4 caliper I have here:




HTH

[GazzaG60]

many thanks will. ill measure what I have.

panel on the way btw