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1961 RR Brake Parts Needed


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  • 4 months later...

In another life I once worked in a brake workshop, and spent a couple of days working on an older RR sedan, probably a 'std steel'. Probably late 60s. Not much later in life I became a Rover fan, and saw quite a bit of their drum brakes shortly before they went to front discs. I recall thinking that these brakes were almost identical to those I saw on the RR. These were Girling systems, with two big wheel cylinders in twin trailing shoe configuration, self adjusting via friction pads clamped to the shoe webs, and using a large booster.The advantage of the twin trailing shoes is that they are very resistant to fade due to heat, a characteristic I later tested in the Snowy Mountains of Victoria (Oz). Despite initially being very hesitant about working on the RR I found it easy, as nothing could be put back wrong, and even adjusting the mechanical brake booster was not a challenge.

I suggest you measure the bores of the wheel cylinders, and see if they match those used on the Rovers - late 50s 105S or R(P4 model), and 3L (P5) from 59 to the advent of discs. The castings may even have their size cast on them. The master cylinder may also have its bore on the casting, and be similar to Rover (and other larger British cars of the period - Humber, Armstrong Siddely etc). I would get good pics of the cylinders and contact the P5 owners club (http://www.roverp5club.org.uk/) to see if they can help. It is common practice these days with brake cylinders to resleep damaged bores with stainless steel, so that might solve your problem. The Rover drums were 11" dia x 3" wide IIRC.

Page 19 of this pdf http://www.northwestautomotivehydraulics.co.uk/GIRLING APPLS NW.pdf shows cylinders of 1.25" bore used in several makes of cars . This lists the Rover Cylinder as p/no 390276-7W, service kit SP20151. This pdf  http://rrtechnical.info/sc/sc1/wshop/7.pdf lists the RR wheel cylinders as 1.375" bore, and the drums as 11.25" dia.

HTH

jp 26 Rover 9

 

 

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