Rear Brake Disc Question

[Lewis's Friend]

Hi all. Just a quick poser I hope...!

I am just about to get a rear disc brake conversion setup from Hans, and he has asked me what discs do I want - plain, grooved or grooved and dimpled.

My first thought is that plain is fine as the rear is doing relatively little work, but I would be grateful if those who have this setup would be able to weigh in?

If it has any bearing on the matter, I am intending to upgrade the front brakes too to something more powerful than standard.

All thoughts welcome!

[magpies]

plain works fine for me

[mk1fan]

Plain discs, braided hoses and DOT 5.1 has worked fine on Samy on both the S Club Tour and many trackdays.

As for front brakes,
http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Ignore the white noise about spacers.

[phillpot]

Plain = works fine

Grooves and dimples = look cool / cost more




Next "step up" would be to go for vented disc's, imho

Edited by phillpot on Friday 17th July 18:30

[magpies]

Fronts = 283mm


Rears

[Lewis's Friend]

Thanks for all the feedback - always helpful. I think I'll just go for plain discs for now.

Re the front brakes, I've seen numerous threads and to be honest, need to do much more research into a system. Initially I thought a 260mm 4pot hi-spec setup would be good (as seen on burton power). Does that seem reasonable, or am I going down a wrong route? The kit is about £660 for reference.

[Top Gear TVR]

No dimples, not ever. Grooves ok but not needed at the back :-)

[phillpot]

Lewis's Friend said:

Re the front brakes...................... The kit is about £660 for reference.

Are you rich, what do you intend to use the car for????


Imho the 260mm disc's and calipers from a Chimaera/Griffith and some decent pads are more than adequate for road use.

Takes two things to stop a car quickly (not counting trees and brick walls), good brakes and better tyres.


But of course disc's the size of dinner plates and fancy calipers with "Brembo" or whatever written on them do look good

[Lewis's Friend]

phillpot said:

Lewis's Friend said:

Re the front brakes...................... The kit is about £660 for reference.

Are you rich, what do you intend to use the car for????


Imho the 260mm disc's and calipers from a Chimaera/Griffith and some decent pads are more than adequate for road use.

Takes two things to stop a car quickly (not counting trees and brick walls), good brakes and better tyres.


But of course disc's the size of dinner plates and fancy calipers with "Brembo" or whatever written on them do look good

I am not very rich - alas!

I have looked at the 260mm Chimaera upgrade, but they seem to be few and far between (at least the last time I looked). Also, sellers seem to have no idea what they are selling, and whether they are 240 or 260mm setups!

As such, I started looking at alternatives - though that kind of money doe hurt!

[v8s4me]

Lewis's Friend said:

....I have looked at the 260mm Chimaera upgrade, but they seem to be few and far between....

Really? http://www.ebay.co.uk/itm/Ford-Escort-RS-Turbo-Sie...

[mk1fan]

Or a complete 278mm front set up for around £120 off a Fiesta ST.

[Lewis's Friend]

Thanks for all the suggestions. I'll have to consider alternatives. Ideally I'd like a nice easy bolt-on solution, but if that is ruinously expensive, I'd think about trying a more home made way.

[GadgeS3C]

Have these (280mm ish - can't remember exactly) on the front of our S3C. They were on when we got it.


Stops very nicely, even with drums on rear.
Personally would spend the money on something else on the list of things to do...

Edited by GadgeS3C on Sunday 19th July 16:11

[mk1fan]

Lewis's Friend said:

Thanks for all the suggestions. I'll have to consider alternatives. Ideally I'd like a nice easy bolt-on solution, but if that is ruinously expensive, I'd think about trying a more home made way.

Read the thread I linked to. Fiesta ST is bolt on. Only thing you need to source is some 10mm spacers or 58mm high discs.

[Ceejay73]

I have, like mk1fan, been looking at Fiesta calipers but of the 260mm variety. I acquired a pair of calipers and mounted them to my uprights, albeit with the 240mm discs as I don't yet have the 260's. It is looking at the moment like this will be a direct bolt on replacement using XR4i 260mm discs and will require NO other alterations, ie drilling, spacers or grinding. The potential added bonus being that the pistons are the same size as in our 240mm setup which means no increased pedal travel either. I will ofcourse post more info when I have the correct discs and prove it 100% but at the moment see no problems and it gets round having to try and find old potentially rare ford calipers.

Carl.

edit: damned dislexic keyboard.

[Lewis's Friend]

Again, thanks for all the input here. It's always appreciated.

Are all fiesta st 150 discs 278mm do you know, as there appears to be a set for £80 at the moment on eBay that seems a very good deal?

I think I will look at this method, as for the price it seems really wasteful not to!

[mk1fan]

The brakes I bought came from a mk6 Fiesta ST 2.0 150bhp model. Mk6 ran from 2002 to 2008. Given modern manufacturing preferences I would expect the Fiesta to share hub/uprights so all the brakes should fit all the models. Therefore, fit the S.

If you use the ST discs then you'll need a 10mm spacer to move the calliper over. Personally, I'd use the Cougar discs as they are lighter. Well, mine were.

As for size check with the seller. Also check the casting numbers as noted in my linked thread. Make sure you get the carriers too.

[Lewis's Friend]

mk1fan said:

The brakes I bought came from a mk6 Fiesta ST 2.0 150bhp model. Mk6 ran from 2002 to 2008. Given modern manufacturing preferences I would expect the Fiesta to share hub/uprights so all the brakes should fit all the models. Therefore, fit the S.

If you use the ST discs then you'll need a 10mm spacer to move the calliper over. Personally, I'd use the Cougar discs as they are lighter. Well, mine were.

As for size check with the seller. Also check the casting numbers as noted in my linked thread. Make sure you get the carriers too.

Cheers for the info. I'll give the guy a call.