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Please play nicely.  No one wants to listen/read a keyboard warriors rants....

Poll

Yes I am interested in upgrading my brakes and I have;

16" wheels
17" wheels
18" wheels

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Author Topic: Brake upgrades.  (Read 4449 times)

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TheBoy

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Re: Brake upgrades.
« Reply #30 on: 02 October 2013, 21:55:26 »
I said 17s, as occasionally I swap wheels between cars, and I dont want to loose that flexibility.

//Edit, my spare is 15, so ignore my vote. I'll stick with what GM provided for now. Sorry
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05omegav6

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Re: Brake upgrades.
« Reply #31 on: 02 October 2013, 22:05:33 »
Right, had a delivery today... a set of front and rear PBR calipers from a Monaro VXR 6.0 and thanks to Kevin and Robsey, summat to trial fit them to :y

Firstly, they bolt straight on, with minor tweaking to the rear dust shield and the need for 5mm longer bolts for the rear calipers 8)

Secondly the maths...(Omega in Red)
 
Front piston area: 2 x 40mm = 12.57mm2 = 25.1425.52 mm2 total
Front disc: 330 x 32 mm vs. 296 x 28 mm

Rear piston area: 1 x 44 mm = 15.2 mm2 13.86 mm2 total
Rear disc: 315 x 18 mm vs. 286 x 20 mm

Master cylinder bore: ??.?? mm 25.4 mm

Thirdly, they won't fit 16" wheels ::)

Pics:

Fronts:







Rears:





Discs/mounting bells are next on the list, but the first hurdle was whether they fitted, which they do, which is nice 8)
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serek

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Re: Brake upgrades.
« Reply #32 on: 02 October 2013, 22:11:47 »
how much is set of vxr calipers??
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05omegav6

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Re: Brake upgrades.
« Reply #33 on: 02 October 2013, 22:14:09 »
Quote from: serek on 02 October 2013, 22:11:47
how much is set of vxr calipers??
These were listed on Ebay for £215.00 :y
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serek

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Re: Brake upgrades.
« Reply #34 on: 02 October 2013, 22:15:17 »
Quote from: ex taxi al on 02 October 2013, 22:14:09
Quote from: serek on 02 October 2013, 22:11:47
how much is set of vxr calipers??
These were listed on Ebay for £215.00 :y
yes just saw those
not bad price for set
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serek

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Re: Brake upgrades.
« Reply #35 on: 02 October 2013, 22:16:48 »
now need to find discs what will fit with this calipers
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05omegav6

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Re: Brake upgrades.
« Reply #36 on: 02 October 2013, 22:32:16 »
Fronts... http://www.demon-tweeks.co.uk/motorsport/brake-discs/a-p-racing-pro-5000-plus-brake-discs

Option 6 :y plus anodised alloy mounting bell.

Rears... custom made, carbon steel with anodised alloy mounting bell incorporating handbrake drum.

Pads EBC Redstuff...
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serek

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Re: Brake upgrades.
« Reply #37 on: 02 October 2013, 22:55:28 »
Quote from: ex taxi al on 02 October 2013, 22:32:16
Fronts... http://www.demon-tweeks.co.uk/motorsport/brake-discs/a-p-racing-pro-5000-plus-brake-discs

Option 6 :y plus anodised alloy mounting bell.

Rears... custom made, carbon steel with anodised alloy mounting bell incorporating handbrake drum.

Pads EBC Redstuff...
all looking good,
so what sort of money you think will cos front and rear set up?
or just front?
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05omegav6

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Re: Brake upgrades.
« Reply #38 on: 02 October 2013, 23:10:21 »
Have been quoted £900+ Vat for the 4 discs and mounting bells, so including the calipers and pads, about £1450 :-\
But bear in mind that the bells need to be machined from scratch, and the rear discs are an odd thickness... a set of four cheapy Monaro discs are about £500 anyway, and the hub dimensions are different enough to be annoying, so after machining etc, probably not cheaper or easier... :-\

For reference, the full AP kit would be nearer £4k for all new parts :-X
« Last Edit: 02 October 2013, 23:24:28 by ex taxi al »
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chrisgixer

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Re: Brake upgrades. (Pic heavy)
« Reply #39 on: 02 October 2013, 23:26:34 »
£4k ? Shit the bed! :o  Looks good though Al :y




Can't be too hard to sort a spare wheel btw. Can it? :-\
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05omegav6

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Re: Brake upgrades.
« Reply #40 on: 02 October 2013, 23:47:45 »
Quote from: chrisgixer on 02 October 2013, 23:26:34
£4k ? Shit the bed! :o  Looks good though Al :y




Can't be too hard to sort a spare wheel btw. Can it? :-\
Sure I can find one somewhere ::) might even be an MV6 one ;D

That 4k is for VXR8 spec brakes, using brand new components bought separately from an approved AP stockist, and includes all machining, pads and Vat... so could be broken down into more convenient chunks :y

As Edmund would say... I have a cunning plan. A plan so cunning you could pin a tail on it and call it a fox.
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chrisgixer

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Re: Brake upgrades.
« Reply #41 on: 03 October 2013, 20:33:00 »
From Haynes for omega;
Master cylinder nominal diameter
  From model year 1998
All models .................................25.40mm

Haynes forHolden Commodore gives no specs for brakes. :(
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05omegav6

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Re: Brake upgrades.
« Reply #42 on: 03 October 2013, 20:54:42 »
Quote from: chrisgixer on 03 October 2013, 20:33:00
From Haynes for omega;
Master cylinder nominal diameter
  From model year 1998
All models .................................25.40mm

Haynes forHolden Commodore gives no specs for brakes. :(
Well that's a bit pants :-\

Ok a spot of Googling has found...

http://www.rockauto.com/dbphp/x,catalog,27,partnum,MC390889,d,Raybestos_MC390889.html

Which suggests a bore size of 1.25"/1.0" or in new money 31.75/25.4 mm :y
« Last Edit: 03 October 2013, 21:07:45 by ex taxi al »
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05omegav6

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Re: Brake upgrades.
« Reply #43 on: 03 October 2013, 21:17:04 »
So, back to the maths...

Quote
Secondly the maths...(Omega in Red)

Front piston area: 2 x 40mm = 12.57mm 2 = 25.1425.52 mm 2 total Front disc: 330 x 32 mm vs. 296 x 28 mm

Rear piston area: 1 x 44 mm = 15.2 mm 2 13.86 mm 2 total Rear disc: 315 x 18 mm vs. 286 x 20 mm

Master cylinder bore: 31.75/25.4 mm 25.4 mm
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chrisgixer

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Re: Brake upgrades.
« Reply #44 on: 09 October 2013, 04:14:41 »
From Brembo parts catalogue

Hub hole will need machining to match omega. Omega hub outer will need machining a couple of mm to allow the disc to fit on. But apart from that, Afaict most measurements are suitable with in a few mm. ESP offset and thickness.

omega



Phaeton


Calipers
Looking at Audi q7 fronts. As Sereks recommendation. :)



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