had a rear lockup problem on the racetrack, this looks like a bias valve, but does it have the right brake cyls?
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| Author: | Spaceboy [ Mon Oct 13, 2008 4:17 pm ] |
| Post subject: | rear brake identification |
had a rear lockup problem on the racetrack, this looks like a bias valve, but does it have the right brake cyls?
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| Author: | awdmoke [ Mon Oct 13, 2008 4:32 pm ] |
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That is the brake limiting valve (not quite the same thing as a bias valve) Can't tell which rear cylinders you have without taking off the drums. I take it you have discs up front? |
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| Author: | matt van'74 [ Mon Oct 13, 2008 4:52 pm ] |
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you should have 5/8" wheel cylinders |
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| Author: | 64cooper [ Mon Oct 13, 2008 7:01 pm ] |
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also be aware that the limitimg valve is not the same for all mini variants as they all have different shut-off pressures. What works on a Cooper S would not work correctly on an 850. How you tell the difference I don't know. |
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| Author: | mini-dunger [ Mon Oct 13, 2008 7:23 pm ] |
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did you change the rear cylinders when you put discs on? |
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| Author: | Mick [ Mon Oct 13, 2008 7:31 pm ] |
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64cooper wrote: How you tell the difference I don't know.
You pull them apart and compare the length of the spring found within. One is longer than the other by a fair margin. I think it's the disc type which is shorter from memory.. |
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| Author: | drmini in aust [ Mon Oct 13, 2008 7:39 pm ] |
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mini-dunger wrote: did you change the rear cylinders when you put discs on?
I did the wife's car, AFTER I had a big sideways braking moment on the F3 at 110KMH... 
John is right, there are various valve settings- 850 early 250-300psi, late 450psi, van 450psi 998 Deluxe 370psi, late 390psi Mini Minor early 450psi, late 390psi 998 MiniMatic, Moke & van 390psi 998 Cooper 450psi 997 Cooper early 250-300psi, later 450psi 1098 Mini 1100 saloon, van, BMC Moke, Clubman 390psi 1275S, Clubman GT 370psi 1275 Moke 390psi. |
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| Author: | Spaceboy [ Mon Oct 13, 2008 8:04 pm ] |
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well its a 75 leyland mini with 7.5" discs on the front, spaced drums on the back.. it came with the discs on it, so i dont really know what has been done at the back |
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| Author: | drmini in aust [ Mon Oct 13, 2008 8:45 pm ] |
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I'd put 5/8" S cylinders on the back like I did with our roundy (all Clubby S brake setup but S front discs). You will have to drill new dowel holes in your backplates, Cooper S backplates had them in a different spot. |
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| Author: | Spaceboy [ Tue Oct 14, 2008 4:29 pm ] |
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drmini in aust wrote: I'd put 5/8" S cylinders on the back like I did with our roundy (all Clubby S brake setup but S front discs).
You will have to drill new dowel holes in your backplates, Cooper S backplates had them in a different spot. thanks, will do that! |
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