15 replies to this topic

[Prawn]

Just a quick one folks, I have searched, but didn't find what I wanted.

I'm planning on treating Mini to some alloy 4 pots in the next few weeks.

Do kits like the Minisport 7.9 and 8.4 vented use Mini or metro flanges?

I'm hoping its Mini flanges as metro flanges will throw my new wheels out too far!

Also, is there noticably improvement with the 8.4s over 7.9s? I'm on Fiesta brakes at the mo, but wanting more stopping power. Will be on 13's, but could be nice to have the option to revert back to tens if I went for the 7.9's, but if the 8,4's are much better I'll forefit the 10's option.

Cheers

Prawny

[jaydee]

I dont know about the minisport ones, but I have the ST alloy 4 pots for 8.4'' discs and they fit the original mini hub and flange, for use with vented discs you just need to fit a spacer, but you'll need different flanges for fitting vented discs.They weigh about nothing..
And with 7.9'' discs you'll use the same brake pads as with 8.4'' setup, but with 7.9'' you can fit lighter 10" wheels, so i guess the difference between them is minimal if none at all..

Edited by jaydee, 06 April 2012 - 09:54 AM.

[Prawn]

Cheers folks :)

Dilligaf, do you mean no dust seals on the minisport callipers? Interesting to note, but at under 1000 dry miles a year it shouldn't be too big a problem for me. Retaining the minI drive flange is more important due to width limitations!

Jaydee: I'm on tens at the moment with a032R's, and despite the brilliant handling on my gaz coilovers, I just feel I'm lacking in mechanical grip, hence a move up to 13's and bigger tyres.

I was more wondering if the extra 0.5" of disc on the 8.4's gives a noticeable increase in stopping power.

So they all just take metro 4 pot pads?

[Ethel]

Don't the Minisport calipers have alloy pistons - that might be a reason for not having dust seals? The extra half inch gives about 6.5% better leverage and a bit more disc area for cooling the extra bit of friction you can generate by virtue of the faster "feed" speed (metres/second not rpm)

[Prawn]

I guess it comes down to minisport 7.9's or 8.4's then!

I've been on tens for years, but having another more modern track car with huge brakes and tyres has spoiled me really!

Will try the car on 13's with current brakes to see how it handles, then if I don't see myself going back to tens any time soon I'll go 8.4's.
Cheers guys

[Dan]

If bigger wheels won't bother you and you want proper track brakes then go for a KAD big brake kit.

[R1mini]

Minisport use standard mini flanges, Minipares use vented flanges when using vented disc's......
Minisport 7.9's calipers don't have piston seals, but the minispares calipers do. This is what swayed it for me........

My Minisport alloy 4 pots had piston seals??

Cheers
David

[Kerrin]

My Mini Sport 7.9" alloy 4 pots also have piston dust seals.

[Dan]

Mini Sport quite famously had to redesign their alloy 4 pots a couple of years back, I think because the old design was prone to failing in use. I believe that the use of piston seals is one of the differences between the two types.

[Dan]

Actually thinking about it I seem to remember that part of the problem with the old ones was the dust seals tended to simply fall out. Deleting them entirely might be something of an over-reaction though.

[Ethel]

Minispares do 8.4's & 7.5's just not 7.9's.

Afaik the main differences are piston material and the size & location of the bleed screws.

I'm not sure that Minispares didn't have an issue with loose dust seals, possibly an issue with pressing steel into softer alloy? Do bad thing in some ways, I'd sooner resort to Loctite than chew up several seals & my shiny new calipers.

[Kerrin]

Yeah I must have the old ones, they do have a different logo to the new style. I do recall one of the dust seals seemed a bit loose, but no problems since they were fitted.

Maybe it's age or experiance, but I got hold of a set of S brakes last year, which I am rebuilding to try on the car, I was a bit doubtful whether S brakes were up to the job, after getting brake fade and using a hedge to stop years ago. But I think that was down to nasty cheap brake pads.

Whichever brakes are the best will stay on the car.

[dennismini93]

sorry to open up an old thread but i was looking at 7.9s and saw http://www.plminisho...nted_Discs.html has any one had any expiriance of these? they are cheaper than minisport and dont say minisport on them lol i want 4 pots and want to one day use 10s but can afford KAD so was looking around. what do people think?

[Midas Mk1]

Minisport make P&l callipers, they're the same abeit logos.

Edited by Midas Mk1, 01 January 2013 - 01:32 PM.

[dennismini93]

Minisport make P&l callipers, they're the same abeit logos.

worth buying them from p&l then lol

There about 360 with the dreaded VAT, so actually more expensive.

ahh yeah fair point, do you think they'd haggle down to minisport price?

are they any good over the minispares cooper s 7.5s?