[ROVERNET - UK] Rover P6 master cylinder master class

Mon Mar 10 21:04:12 GMT 2008

Has anyone on the Rovernet ever had a 3500S master cylinder rebuilt that 
was properly done and functioned as it should?
> P6 units may or may not be the same internally as other Girling units .
> They may contain [ undocumented ??]Rover specific parts

Parts are well documented in the Rover service manuals. Other manuals, 
who knows?
> Minor differences between small parts  may have major consequences
> Master cylinder rebuild kits from any source may or may not contain 
> all the parts/ the correct parts  needed to rebuild a Rover unit

Change "any source" to "suppliers without specific Rover expertise"
> Absent a certified Merlin with access to Girling and Rover's cook 
> books , any rebuilt P6 master cylinder from any source  may [ should / 
> must ??? be suspect ?

Don't remember hearing that. Call Ruth, Dermot or Pierre and trust their 
expertise. I don't know if James gets into rebuilds on hydraulics. 
Rebuilt master cylinders from "any" source without Rover expertise may 
be suspect and may be false economy.

> A new NOS unit is probably the best , if not cheapest way to go
>
> Since I don't want to take any chances the safest route is to buy a 
> NOS P6 master cylinder ??

If you can find one and it isn't bad from sitting on a shelf for thirty 
years. Good luck finding one.
> There is no "official list ' of interchangeable Girling master 
> cylinders , so no one can tell me if a NOS E type  Jaguar master 
> cylinder can be fitted to a P6 . 
I don't have one, anyway.

>
>
>> That's the case with:
>> 1.  The kit for the dual piston Rover 2000 brake
>> master.  If you buy an aftermarket kit from a certain
>> UK supplier (not Pierre)the metal "tip valve" won't be
>> included.  I determined from the maker that there are
>> two kit numbers.  One kit number will have their valve
>> and the other kit won't.  If you buy your kit from a
>> commercial supplier and assume it will contain the
>> tipping valve - you may be disappointed.  Remember if
>> you "assume", you will make an "ass" out of "u" and
>> "me"  :-)
>>
>> 2.  The fuel pump kit for the Rover 2000.  the
>> aftermarket kits don't include the oil seal that
>> connects the fuel section with the mechanical rocker
>> arm section.  You can't "fully" rebuild the pump.
>>
>> "Caveat emptor"
>>
>> Eric
>>
>>
>>
>> --- Glen Wilson <rovercar at comcast.net> wrote:
>>
>>> Another thing to be aware of is that companies like
>>> Lockheed and Girling
>>> often sold five similar rebuild kits in the 60's
>>> which later generations
>>> of management decided to "rationalize" by listing
>>> one kit that would
>>> supposedly cover all five previous applications.
>>> "For RTF55525,
>>> substitute GHJ6473."  The later "catch-all" kit
>>> often did not contain
>>> all of the special parts that were in the other
>>> kits. In going through
>>> boxes of NOS parts from the 60's, I have frequently
>>> found that the
>>> substitute part from the 80's did not contain a
>>> particular spring washer
>>> or o-ring necessary for one of the five applications
>>> covered by the
>>> "updated" number.
>>>
>>> Glen
>>>
>>>
>>>
>>>
>>> Netspace wrote:
>>> > The Girling front pads are a Girling stock item.
>>> > The boosters are the same design, just different
>>> gain ratio.
>>> >
>>> > BTW a PBR VH44 has a higher gain and works better
>>> on the P6B than the
>>> > standard booster.
>>> >
>>> > PVS
>>> >
>>> > ----- Original Message ----- From: "Glen Wilson"
>>> <rovercar at comcast.net>
>>> > To: <rovernet at lyris.ccdata.com>
>>> > Sent: Monday, March 10, 2008 9:50 AM
>>> > Subject: [ROVERNET - UK] Rover brake parts and
>>> other stuff...
>>> >
>>> >
>>> >>
>>> >> It's wise to ask questions of the Rovernet
>>> because even as late as
>>> >> the 60's and 70's there were some oddball parts
>>> made specifically to
>>> >> Rover specs that apparently were not manufactured
>>> in sufficient
>>> >> numbers to warrant a specific part number from
>>> the manufacturer. Why
>>> >> they didn't, I can't say because it seems sloppy
>>> to me. Apparently,
>>> >> Rover would say, "Send us 1500 of part number
>>> 1J658S, but put a
>>> >> slightly lighter spring in it." Rover assigned it
>>> a specific part
>>> >> number as a Rover part, but the manufacturer
>>> apparently saw it as an
>>> >> OEM sale item not to be added to their catalog.
>>> >>
>>> >> The argument that any given manufacturer would
>>> not make a unique
>>> >> casting for Rover doesn't really hold water,
>>> either. A manufacturer
>>> >> would be tickled pink to make a specific casting
>>> or part for Rover
>>> >> because they could charge them extra for it. When
>>> the P6 was in
>>> >> production, Rover seemed to be more concerned
>>> with correct
>>> >> engineering and doing things their own way than
>>> they were with buying
>>> >> off-the-shelf parts used in Fords and MGs. Aside
>>> from the rear brake
>>> >> pads, there doesn't seem to be much about the
>>> braking system that was
>>> >> taken from high volume auto manufacturers.
>>> >>
>>> >> Glen
>>> >>
>>> >> _______________________________________________
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>>> >>
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>>> >>
>>> >
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>>>
>>>
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>>
>>
>> Webmaster of The Rover Car Club of Canada
>> Website:  http://www.roverclub.ca/
>> Webmaster of a variety of sites from:
>> http://www.websrus.ca
>>
>>
>>      
>> ____________________________________________________________________________________ 
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>
>
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>