Lets talk Brakes!
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Thats a good write up there Sproket! Like it. But its gonna be a road car with the occasional thrashing about not racing it.

Groves in discs is to remove the gases produced under breaking out from under the pads and disc contacts

Drilled to allow heat to escape?

Vented a another from of allowing heat to escape from the brake discs

all 3 of these used on a 7.5 help with the heat issue you have brought up or be so much over kill?
also hope i got this right


I'm keeping 10's as thats what the car left the factory with so it shall stay that way. Always said 13's belonged on the metro not the mini. (not saying people with 13's cars look crap just not my cup of tea)

Cross drilling holes promote cracking. They are there to allow the gasses formed between the pad and disc as it is 'cooked' as a result of it working in its highest temperature area. The grooves pretty much do the same thing, and again promote cracking. The holes or grooves do not aid cooling of the disc, but the vented disc does. Without grooves or holes on small diameter discs brake fade would possibly be experienced, which means that the brakes are not up to the job. Agian it's 'fashionable' to have cross driled and grooved discs

I'd run either grooves or holes, not both, one does the same as the other.

As for the wheel choice, it is a personal thing. Each to their own. There are many reasons why one would choose what.

Just to show you this is my mates Bmw mini cooper s brake set up





316mm Drilled, Grooved & Vented discs with Brembo 4 pots, Retro Fitted off a r56 JCW

Thanks dude really good write up, Ill have a good think, Issue is i don't wanna buy 2nd brake calipers that have done 1000's of miles on different mini's no idea what state they have been kept in or who's worked on them. It was one of the reasons I was looking at going brand new 4 pots, along with they look the part and drop my insurance a few quid as well, But mintex pads i was looking at anyways I always hear bad stuff about green stuff pads

Thanks

It's been a while since I looked at brakes, but I see that MSs are now offering a 7.5" disc based on the post 84 standard disc, but cut down. Easier to do the conversion, than using the S disc setup, I assume.

I really did not like my S setup on the old car. Too many "shit, it's not going to stop" moments. I want better braking, but want to stick with 10s. So, preferably 7.9" with 4 pots, but might have to go to 7.5" to fit rose-petals.

Do we really need vented discs on a road car? Anyone ever had a problem with overheating brakes on the road? Not sure I need them with my granny driving style. Solid discs with good pads should suffice.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I believe the standard 4 pots with non vented disc's fit all wheels but the vented catch on certain alloys.

Could always give minisport a call?

What the mind can conceive the mini can achieve
MITP 2012 17.01 seconds 1/4 mile against "The Don"
MITP 2013 16.83 seconds 1/4 mile

Which calipers had the problem of shearing off bleed nipples because they had siezed?

My 7.9 4 pot mini sport items did that, I'd say there about 8 years old now. I think mini sport have increased the bleed nipple size...apart from that they've been good brakes.

Edited by zerocool_jj2000 on 17th Dec, 2013.

Edited by robert on 17th Dec, 2013.

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

The complete assembled hubs are off my car atm so I could grab some measurements

Yes i moved to the darkside

Instagram @jdm_brett

I have had first hand experiance of drilled and g r ouved disks cracking after a spirited drive, not pleasent at all. They were £125pound ebc special disks, shit!

Now using solid disks from mintex and they are awsome.

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Now that is a contender for QOTY

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Drilled wil crack, but that the same problem ocurs with slotted I haven't heard of before

www.shag.no

Didn't Matt Woods crack a disk on his 7.5" disk?

I felt a good improvement on my 7.9's fiesta setup with grooved solid disks over the previous standard ones. Always stayed away from special pads, had much better results with ferodo premium pads.

I run a supercharger and I don't care the TB is on the wrong side.
VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

Seems cracking keeps appearing now is this due to crap quality in brake discs or?

I had a seized nipple on my minisport 7.9! Right pain in the arse to get out. Didn't help that I snapped an easy out trying to remove it.

Is anyone using mintex 1155? They are available in a few places!

first of id like to ask what happens when a disk cracks? goes all wobbly and shakes the pedal like a warped disk? blows into bits destroying your wheel and other stuff?

second its interesting that its been said about when your working pads hard they give off gases i do hear a sort of fast pulsating popping sound when pulling up really hard from like 100kph or more! for a tight low speed turn
dose this mean at the time of funny noises im at the edge of what my pads can take with out melting?
is it worth getting the better mintex 1144 when i still have a good amount of meat on the current ones that where supplied in the drive hub assembly from minisport
atm they are grate stone cold its just when they are being worked hard i get slightly afraid something might give out like when you roast std drums and the friction material shears off the steel bit! been there not fun.. hence new brakes!

i do like that wright up sprocket

basically id just like to add my thoughts of
biggest brakes under the wheel of your choice, good pads like the mintex 1144, vented disks if you always stomping on it at the last second like i do

at the time when buying my wheels n brakes i thought that my 8.4" mini sport alu 4 pots would barely fit under 13" wheels errr thats really not true!! and having now seen the two combined id have bought smaller wheels!

after test fitting my freshened up period 12" magnesium wheels over the same brakes i found there is loads of room to breath so perhaps if there are?? 11" wheels lol perhaps they might fit?

i like the fat look of chunky rubber side wall

Mintex 1144's seem to be best upgrade then?

i still wanna stick to 10's so minispares 4 pots are the ones to go for? my issue is just don't look the part, most 4 pots look cool but theres look very plain.

The carbon metallic pads on Cooper S pads are magnificent. MORE then enough for a road car. However, these do also make a fair bit of dust.

Could always buy some of these, lmfao
http://www.ebay.com/bhp/brembo-look-brake-caliper-cover