Wow - lots of parts changes there. A route which may be less finacially
cripling could be to get a machine shop to make a new master cylinder for you
to match a set of seals (if you can get them.)
Even with the labour costs involved it may be viable, it's just finding tthe
right place? Another suggestion is to try to find stockists of brake parts or
classic stock (who aren't on the 'net)
BEWARE do not use OLDSTOCKSPARES.COM who are thieves! see here
https://uk.trustpilot.com/review/oldstockspares.com
Martin
----- Original Message -----
From: Jim Hearne
To: Quantum Owners Group
Sent: Wednesday, December 12, 2018 9:42 PM
Subject: Re: [Quantum Owners] 2+2 (XR2) Master Brake Cylinder
Sorry, googlegroups refuses to accept any replies (or moderations) from my
email at the moment so my reply is a bit late.
The early large master cylinder as you have found only fits with the early
short distributor which needs it's matching ECU to work.
This distributor is shorter as all the mechanical and vacuum advance is done
electronically in the ECU, the later longer distributor reverted to the old
mechanical advance systems and needs no ECU.
The later master cylinder i think was made by Ford, or at least specifically
for them. It's made out of pressed mild steel instead of cast steel or cast
iron, ironically it was probably much cheaper to make.
But because it's mild steel any water in the brake fluid (caused by not
changing the fluid often enough, or too much pressure washing) causes rust in
the bore.
Silicone brake fluid is worst for this as the water doesn't mix with the
fluid and instead sinks to the lowest spot and rusts.
The insides of the master cylinders are completely different so, no, the
overhaul kit for the earlier one won't help you.
And since the probably is probably rust then it wouldn't help you anyway.
Besides the distributor issue, to swap from the later to the earlier system
needs the master cylinder, servo, servo mounting brackets, transfer bar and the
bracket on the other end of the transfer bar all swapping over to the earlier
parts.
I think using a Mondeo master cylinder and servo has been mentioned before as
a replacement for the later Mk2 but i've not done that conversion myself.
My saloon has a Mk3 Fiesta master cylinder and servo on it but i can't
remember now if i had to modify the brackets or not.
Jim
On Wednesday, December 12, 2018 at 5:49:48 PM UTC, Sonia wrote:
Thanks for the input so far. Misterauto do have the later one at £454!!!
The earlier one is around £40, similar to price of earlier one on ebay. Don't
understand why there is such a difference between early and late versions
Anyway there is not room for the earlier one so does anyone know of
a) whether there are different refurb kits for the earlier and later
versions of the master cylinder, and if so how to tell which one I need
b) something else that could be used, possibly with some re-routing of the
brake pipe connections
Sonia & Pete
On Wednesday, December 12, 2018 at 4:53:38 PM UTC, Susan and Martin Scott
wrote:
I'm not sure about whether the servo would need changing or not (I'll
defer to Chris's knowledge on that), but the pipework will need 'modifying in
length' (maybe not a huge issue) and possibly has different size (m10 or m12)
threaded ends - again not too big an issue. If fitting the larger master
cylinder, however I believe you would also need a different distributor (ie
smaller) as there isn't room.
----- Original Message -----
From: chris.quant via Quantum Owners Group
To: [email protected]
Sent: Wednesday, December 12, 2018 3:48 PM
Subject: Re: [Quantum Owners] 2+2 (XR2) Master Brake Cylinder
I think you need the Girling version.
TRW do one here
https://www.trwaftermarket.com/en/catalogue/product/PMH329/
I paid around £ 350 for mine 6 years ago, but I believe others have
since found them cheaper.
If you try to fit the long version then you will also need to change
the servo (black donut disc thing behind it) as the connections are different.
Chris G
From: Sonia
Sent: Wednesday, December 12, 2018 12:18 PM
To: Quantum Owners Group
Subject: [Quantum Owners] 2+2 (XR2) Master Brake Cylinder
Hi
Looking for advice on brake master cylinder on our 2+2 based on 1989
Mk2 XR2. Fluid is leaking badly from master cylinder so almost no brake pedal!
Got it to local garage (who I have used for nearly 20 years and trust) who are
having trouble locating a replacement part. Issue is Ford (bless 'em) changed
the master cylinder from 1986 when a 'rising servo' and shorter master cylinder
was fitted. Prior to that it was a longer cast item. The earlier ones are
readily available but with the rising servo (it points more upwards) there
isn't room for the longer master cylinder. The only later cylinders we have
found are on ebay and £350!!
Refurbishment kits are available for about £15 which may fix our
existing cylinder but it is not clear whether there are separate kits for the
early and later cylinders
So, does anyone
a) know of a source of the later master brake cylinders at a more
sensible price
b) know if there is more than 1 refurbishment kit and how to tell which
is which
c) know of another master cylinder which would fit with minimal
additional effort
Many thanks
Sonia & Pete
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