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Brake plates and 5/8 rear wheel cylinder
https://www.ausmini.com/forums/viewtopic.php?f=2&t=89108		 Page 1 of 1
Author:  bluewhitecoopers1968 [ Thu Apr 09, 2015 7:38 pm ]
Post subject:  Brake plates and 5/8 rear wheel cylinder
Hi all, on my K project I'm going to be fitting disk brakes so I have been looking at building up the rear brakes with 5/8 cylinders.
The roll pin in the cylinder is on the opposite side to the hole in the backing plate. I'm Just after some advice before I go and drill out the backing plate. Is this the only solution or do I simply need a different plate. Cheers, Richard.
Author:  mini_mad_matt [ Thu Apr 09, 2015 7:44 pm ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
There are backing plates with the correct hole for 5/8 cylinders. There may possibly be some backing plates with both holes.

However it is common practice to just drill out your own backing plate to suit.
Author:  willy [ Thu Apr 09, 2015 7:47 pm ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
Drill away!
Author:  bluewhitecoopers1968 [ Thu Apr 09, 2015 9:08 pm ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
yep thanks, I'll drill away. :)
Author:  drmini in aust [ Fri Apr 10, 2015 9:13 am ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
I drill another 5/32" hole in the cylinder using the mill or bench drill, and move the roll pin. Makes a neater job.
Author:  The Duckmeister [ Fri Apr 10, 2015 9:35 am ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
Had the same deal with mine putting new cylinders in just last week, and given it already had discs up front I'm assuming the old cylinders were 5/8".... Just work out the locations & drill new holes, only takes a few minutes.
Author:  simon k [ Fri Apr 10, 2015 2:17 pm ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
The Duckmeister wrote:
Had the same deal with mine putting new cylinders in just last week, and given it already had discs up front I'm assuming the old cylinders were 5/8".... Just work out the locations & drill new holes, only takes a few minutes.


are you saying you have discs on the front and replaced the 5/8" wheel cylinders with bigger ones?
Author:  drmini in aust [ Fri Apr 10, 2015 2:26 pm ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
Simon's concern... ^^^
If you have discs, you do NOT want rear cylinders bigger than 5/8" as used on an S. Unless you like swapping ends @ 110KMH on a freeway in the wet..! Interesting test of reflexes, but not funny!
Author:  The Duckmeister [ Fri Apr 10, 2015 2:49 pm ]
Post subject:  Re: Brake plates and 5/8 rear wheel cylinder
simon k wrote:
The Duckmeister wrote:
Had the same deal with mine putting new cylinders in just last week, and given it already had discs up front I'm assuming the old cylinders were 5/8".... Just work out the locations & drill new holes, only takes a few minutes.


are you saying you have discs on the front and replaced the 5/8" wheel cylinders with bigger ones?

No, I replaced the stuck wheel cylinders with ones that work...I'm assuming the old ones were 5/8" due to the discs being fitted by a previous owner. The new ones are definitely 5/8", purchased from my local Mini bits shop.
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