Hi Guys,

I have brands two weeks today. I am going to replace the brake fluid as its unknown to me what it is and me and my mate have plenty of RBF600 in stock.

Questions are:

Brakes are bleed fine as they are now, but will pumping new fluid cause these bubbles and bleeding issues people have with rear seirra calipers when pumping through new fluid?

Secondly, How do I know what brakes I have as to what pad I need? I have read that Mintex M1144 are the choice pad but I need to know what application I need.

Pics below for anyone who can tell me what sierra application I have.

Looks to me like you have solid front discs?

If so then I'd guess at early 1.3/1.6 Sierra brakes.

Doesn't loom like you've driven it yet - too shiney by far

what size is the disc ?

there are only 4 kinds with that style caliper:

240mm solid (1.3 / some 1.6)
240mm vented (non-ABS 1.8 / 2.0)
260mm vented (ABS, 4x4 and V6)
278mm vented (Cossie 4x4)

[Edited on 18/5/09 by mcerd1]

They are build pictures lol, also whyt he wheels are bolted on loosely.

Anyone know any places that sell M1144 pads and if they come in my application?

They are solid disks

Burton Power, Rally Design, Ebay, Merlin can probably help

Strongly advise you stick to standard DOT 5.1 fluid or even DOT 4 ----- the more exotic the fluid the more hydroscopic they are and hence the more moisture they absorb from the atmosphere.

Racing fluids are designed for systems where the fluid is bled through on a regular bassis. Once a racing type or so called high performance fluid absorbs water the boiling point falls like a stone and of course it leaves the door openfor corosion problems. After 2 months the boiling point will be below that of fresh DOT 5.1 after 6 months 6 month old DOT5.1 will have a higher boiling point.

Thats hygroscopic not hydroscopic

thatnks for your advice but the RBF600 DOT4 we are putting in has been sucesfful on numerous application all used hard on track across a variety of cars

Evo 6 and 9
Various 2 ltr Clios (Cups, Trophy, 182)
Clio V6
Megabusa
VX220
BMW135

Its a fluid me and my track mates all personally trust and keep in stock.

I emailed merlin re brake pads.

Anyone know if this air issue will come into play on a standard bleed?

Depends how you change the fluid.

If you pump all (as much as you can) of the existing fluid out of the system before refilling then you'll need to bleed thoroughly and may need to remove the calipers to get them higher and ensure all the air is out.

If you simply pump a little out and keep topping up with fresh fluid so that no air can enter the system then as your not disturbing anything else you shouldn't have any problems.

I'd go for the first method though to ensure minimal contamination between the old/new fluid even if they are the same DOT rating.

http://www.merlinmotorsport.co.uk/p626/MDB1175-M1144-FORD/product_inf o.html

are these the little beauties I need? Reconmended from merlin but they said to check shape

quote:

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Originally posted by britishtrident
Strongly advise you stick to standard DOT 5.1 fluid or even DOT 4 ----- the more exotic the fluid the more hydroscopic they are and hence the more moisture they absorb from the atmosphere.

Racing fluids are designed for systems where the fluid is bled through on a regular bassis. Once a racing type or so called high performance fluid absorbs water the boiling point falls like a stone and of course it leaves the door openfor corosion problems. After 2 months the boiling point will be below that of fresh DOT 5.1 after 6 months 6 month old DOT5.1 will have a higher boiling point.

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