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I would throw that old bias valve away (can't fix em) and find/fit a rear limiting valve from an early car instead.
Like the white one pictured
I reckon any Mini with front discs regardless of M/C NEEDS 5/8" rear wheel cylinders.
Is one type of MC better than another for my planed set up I found this out when emergency braking at 110KMH on the F3... :shock:

Most all Mini brake M/Cs are 0.70" bore anyway. I meant the rear drums are +60 thou and I will be using 5/8th cylinders :wink:

I did spell check and it said it was fine :roll:

drmini in aust wrote:

Most all Mini brake M/Cs are 0.70" bore anyway. I meant the rear drums are +60 thou and I will be using 5/8th cylinders :wink:

This is the other type of MC I have. Would I be able to use this brake MC and my current clutch MC together, will they both fit side by side?

Bones "break" but cars "brake"

Hanra wrote:

Bones "break" but cars "brake"

That's punctuation not spelling

haha I'm right :lol:

Thanks Doc. Will I have to change the brake lines from the fire wall to the rear subby to swap over the bias?

Hanra wrote:

Bones "break" but cars "brake"

That's punctuation not spelling

haha I'm right :lol:

Thanks Doc. Will I have to change the brake lines from the fire wall to the rear subby to swap over the bias?

Kennomini wrote:

Hanra wrote:

Bones "break" but cars "brake"

That's punctuation not spelling

haha I'm right :lol:

Thanks Doc. Will I have to change the brake lines from the fire wall to the rear subby to swap over the bias?

Doesn't that come down to grammar, not punctuation?

I differ slightly from the advice above:

1. Yes bin the engine bay valve. It's not a bias valve anyway, it's a fail safe device.

2. Rather than fit a second hand mini rear bias valve of dubious value, fit a new after market adjustable bias valve and spend some time out skidding and setting it correctly.

Author:	Kennomini [ Fri Mar 21, 2008 11:28 am ]
Post subject:	Break bias
Hi all, my current braking system is this; Drum brakes all around and a leaking brake bias as pictured below (it leaks out of the left end) I'm upgrading to 7.5" Cooper discs and 60+thou rear spaced drums with correct sized shoes and 5/8th cylinders. Seeing as I can't find a kit for my current bias I was wondering how hard it is to swap over to the rear type? I have different MC as well that may suit the rear bias better than what's in the car now...your thoughts And how much work is involved it changing the system over to the rear bias?

Author:	drmini in aust [ Fri Mar 21, 2008 12:52 pm ]
Post subject:
I would throw that old bias valve away (can't fix em) and find/fit a rear limiting valve from an early car instead. I reckon any Mini with front discs regardless of M/C NEEDS 5/8" rear wheel cylinders. I found this out when emergency braking at 110KMH on the F3... Most all Mini brake M/Cs are 0.70" bore anyway.

Author:	Hanra [ Fri Mar 21, 2008 2:00 pm ]
Post subject:
Perhaps the fault is due to misspelling?

Author:	Kennomini [ Fri Mar 21, 2008 3:01 pm ]
Post subject:
I did spell check and it said it was fine drmini in aust wrote: I would throw that old bias valve away (can't fix em) and find/fit a rear limiting valve from an early car instead. Like the white one pictured I reckon any Mini with front discs regardless of M/C NEEDS 5/8" rear wheel cylinders. Is one type of MC better than another for my planed set up I found this out when emergency braking at 110KMH on the F3... Most all Mini brake M/Cs are 0.70" bore anyway. I meant the rear drums are +60 thou and I will be using 5/8th cylinders This is the other type of MC I have. Would I be able to use this brake MC and my current clutch MC together, will they both fit side by side?

Author:	Hanra [ Fri Mar 21, 2008 3:50 pm ]
Post subject:
Bones "break" but cars "brake"

ausmini https://www.ausmini.com/forums/

Break bias https://www.ausmini.com/forums/viewtopic.php?f=2&t=40358	Page 1 of 2

Author:	drmini in aust [ Fri Mar 21, 2008 4:55 pm ]
Post subject:
Kennomini wrote: I did spell check and it said it was fine drmini in aust wrote: I would throw that old bias valve away (can't fix em) and find/fit a rear limiting valve from an early car instead. Like the white one pictured I reckon any Mini with front discs regardless of M/C NEEDS 5/8" rear wheel cylinders. Is one type of MC better than another for my planed set up I found this out when emergency braking at 110KMH on the F3... Most all Mini brake M/Cs are 0.70" bore anyway. I meant the rear drums are +60 thou and I will be using 5/8th cylinders This is the other type of MC I have. Would I be able to use this brake MC and my current clutch MC together, will they both fit side by side? Q1 yes. Sorry, I didn't pay attention to the pic. Q2 not really. Q3 yes they will. +.060" on the drum size makes bugger all difference in swept area or working radius..

Author:	Kennomini [ Fri Mar 21, 2008 6:18 pm ]
Post subject:
Hanra wrote: Bones "break" but cars "brake" That's punctuation not spelling haha I'm right Thanks Doc. Will I have to change the brake lines from the fire wall to the rear subby to swap over the bias?

Author:	Mike_Byron [ Fri Mar 21, 2008 6:22 pm ]
Post subject:
I didn't look at this thread before this - I thought it was about the need to have a short holiday in either Victoia or NSW. Hence the bias. Glad the question has been answered now. Mike

Author:	rampage101 [ Fri Mar 21, 2008 6:38 pm ]
Post subject:
Kennomini wrote: Hanra wrote: Bones "break" but cars "brake" That's punctuation not spelling haha I'm right Thanks Doc. Will I have to change the brake lines from the fire wall to the rear subby to swap over the bias? Doesn't that come down to grammar, not punctuation?

Author:	drmini in aust [ Fri Mar 21, 2008 6:58 pm ]
Post subject:
Kennomini wrote: Hanra wrote: Bones "break" but cars "brake" That's punctuation not spelling haha I'm right Thanks Doc. Will I have to change the brake lines from the fire wall to the rear subby to swap over the bias? If I remember right a late Clubby has a tee near where the valve would go, but the early ones have a loop in the pipe to reach the valve. So yeah will probably need the main line replaced.

Author:	smac [ Fri Mar 21, 2008 7:36 pm ]
Post subject:
I differ slightly from the advice above: 1. Yes bin the engine bay valve. It's not a bias valve anyway, it's a fail safe device. 2. Rather than fit a second hand mini rear bias valve of dubious value, fit a new after market adjustable bias valve and spend some time out skidding and setting it correctly.

Author:	Caponix [ Fri Mar 21, 2008 8:18 pm ]
Post subject:
rampage101 wrote: Kennomini wrote: Hanra wrote: Bones "break" but cars "brake" That's punctuation not spelling haha I'm right Thanks Doc. Will I have to change the brake lines from the fire wall to the rear subby to swap over the bias? Doesn't that come down to grammar, not punctuation? who honestly gives a f***

Author:	drmini in aust [ Fri Mar 21, 2008 9:30 pm ]
Post subject:
smac wrote: I differ slightly from the advice above: 1. Yes bin the engine bay valve. It's not a bias valve anyway, it's a fail safe device. 2. Rather than fit a second hand mini rear bias valve of dubious value, fit a new after market adjustable bias valve and spend some time out skidding and setting it correctly. Yep you can get those from Wilwood among others, good idea. Just remember in Oz it's illegal to have it accessible from in the car. BTW no Mini here ever had a rear mounted bias valve, it was a pressure limiting valve.... <edit> typo

Author:	Mokesta [ Fri Mar 21, 2008 10:09 pm ]
Post subject:
Recently I noticed that the Rover 8.4" disc set up in the 1994 I imported had the larger (3/4") rear cylinders as standard. The horizontal, boosted MC must suit larger rear cylinders. M

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Author:	Kennomini [ Sat Mar 22, 2008 1:50 pm ]
Post subject:
I have seen the rear type with a bolt in one of the holes that can be screwed in or out to regulate flow to the rear, that would act as an adjustable bias correct.