TeamCapri

Tech, Repairs, Upgrades => Brakes/Suspension/Tires/Wheels => Topic started by: smd123 on March 10, 2020, 09:46:32 PM

Title: master cylinder rebuild
Post by: smd123 on March 10, 2020, 09:46:32 PM
Does anyone know where I can get a rebuild kit for the master cylinder for my 91 XR2, or if I can rob a kit from another car to get the 3 main piston seals?  Mine is blowing back into the reservoir. 

Thanks!!!
Title: Re: master cylinder rebuild
Post by: greywolf27030 on March 11, 2020, 09:19:26 AM
I got  caliper kits from O'Reilly's.

Jack Byrd
Title: Re: master cylinder rebuild
Post by: Rocketman on March 12, 2020, 01:48:29 PM
Not finding a kit online, and it looks like the master cylinders themselves are out of stock
Title: Re: master cylinder rebuild
Post by: smd123 on March 16, 2020, 11:09:02 AM
I've made a lot of phone calls and run out of options.  Wondering if anyone else has had the same experience?

I found a rebuild kit for a different cylinder that looks similar and has the same bore size.  I'm hoping the seals are the same and it will fix the issue.

Title: Re: master cylinder rebuild
Post by: blueamber on March 16, 2020, 09:03:39 PM
autozone duralast - $99 is all  I can find in a few minutes.... getting rare...
Title: Re: master cylinder rebuild
Post by: jdp on March 17, 2020, 10:52:02 AM
I had bought some left rear calipers and some rebuild kits back a few months ago since they seem to be getting scarce.  With 3 Capris, I want to be able to have on hand to keep these cars going until I age out!  I guess I will have to go on the hunt for master cylinders and rebuild kits.
Title: Re: master cylinder rebuild
Post by: smd123 on March 17, 2020, 12:44:49 PM
So just for the record, the master cylinder has 3 main seals.

All of them are sized for the cylinder bore which is 13/16" (or .813").  Two of them are .400" ID.  The shaft which the middle seal slides over is .554".

Raybestos kit MK1026 has the two outer seals and they appear to be identical.

I have ordered one more kit that looks like it may have the middle seal.

Hopefully this works!!
Title: Re: master cylinder rebuild
Post by: Kiwimagic on April 11, 2020, 01:02:12 AM
Ebay Australia.
FORD CAPRI SA/XR2/SE TURBO CONVERTIBLE PBR BRAKE MASTER CYLINDER.
$127 US dollars plus postage.
Title: Re: master cylinder rebuild
Post by: smd123 on April 15, 2020, 03:54:39 PM
Thanks, I ordered it.

The other seal kits did not fix my issue.  I also mailed it back to Cardone for overhaul and they said they can't fix it.
Title: Re: master cylinder rebuild
Post by: jdp on April 17, 2020, 10:05:41 AM
Well that is a problem. I sure hope my master cylinders don't give out.
Title: Re: master cylinder rebuild
Post by: Rocketman on April 17, 2020, 01:26:07 PM
Bummer, was hoping to hear better news on this. Finding them in Aus is not a bad option however
Title: Re: master cylinder rebuild
Post by: Kiwimagic on May 06, 2020, 08:14:08 PM
Sold out here as well.
But I did locate a remanufactured one on Summit Racing web site..
MERCURY CAPRI Cardone Remanufactured Brake Master Cylinders 10-2565.
Title: Re: master cylinder rebuild
Post by: greywolf27030 on May 07, 2020, 10:53:33 AM
Sold out here as well.
But I did locate a remanufactured one on Summit Racing web site..
MERCURY CAPRI Cardone Remanufactured Brake Master Cylinders 10-2565.

Did they have it? Rockauto will send yours to Cardone to be rebuilt but the last time I heard anyone tried, they said it wasn't available.

Jack Byrd
Title: Re: master cylinder rebuild
Post by: Kiwimagic on May 08, 2020, 12:06:00 AM
I have ordered one. They were very quick to take my money, but as yet it is still pending. Fingers crossed. They ask for a core replacement fee of $45 USD. Postage from Au to the US is higher than that. So I'm waiting to see what comes from this.
Title: Re: master cylinder rebuild
Post by: greywolf27030 on May 08, 2020, 09:22:57 AM
I have ordered one. They were very quick to take my money, but as yet it is still pending. Fingers crossed. They ask for a core replacement fee of $45 USD. Postage from Au to the US is higher than that. So I'm waiting to see what comes from this.

Good luck.
Title: Re: master cylinder rebuild
Post by: smd123 on May 11, 2020, 07:20:25 AM
I tried placing the order with Summit too.  It sat there for a week. I called them and their representative put me on hold and called Cardone.  They said nothing's going to happen unless Cardone happens to get one in.  They said I could have someone send my master sent back in to Cardone to have it rebuilt.  So I canceled my order with Summit.

Then I placed an order with Rock Auto and mailed my master back to Cardone in Texas.  They sent it back 3 weeks later as "unrebuildable".  They didn't say why, but I have to conclude that there are no parts available for it.  Mine is in very good shape other than the molded plastic valve on the top.

So I ordered that cylinder from Ebay Australia and have been waiting 4 weeks now for shipping. Hopefully it shows up someday and works...
Title: Re: master cylinder rebuild
Post by: Rocketman on May 11, 2020, 09:35:09 PM
I have a spare used one kicking around somewhere, if I run across it I will tear it apart to see what all goes into it. There have to be modern parts available that will fit, I imagine tricky to find though

The extra tricky part is that our OEM unit seems to have the proportioning / splitter valve built into it - most other Mazda chassis of this era had external prop valves. Otherwise it may be possible to switch to another MC.

I recall having seen some 323 guys switch to a Mazda 929 MC, and even a Mitsubishi EVO master cylinder. My memory of these things is growing foggy. However after a quick look on Rockauto it seems the 323 uses a drastically different brake booster setup so this is probably not a viable option without switching the booster out.

I have the booster & master cylinder out of an early Mazda MX-3, complete with external prop valve, that I was going to try to fit to the GTXR2. A friend parted his MX3 out and I grabbed it, it appears to have the correct bolt pattern to mount to the firewall but I don't think I ever tried to fit it. I believe it had a larger bore MC which is what I was after to balance my brakes after doing the Galant big brake set up front
Title: Re: master cylinder rebuild
Post by: Rocketman on May 11, 2020, 09:38:30 PM
I saw listing for Dorman new Master cylinder on Rockauto.
https://www.dormanproducts.com/p-15106-m390064.aspx

Interesting that there are two OEM part numbers for it.

It looks like most places are out of stock but Summit Racing is allowing me to add it to my cart. A bit pricey but worth a try?
https://www.summitracing.com/parts/dhb-m390064

Wonder if you called Dorman if they'd make some more? hah
Title: Re: master cylinder rebuild
Post by: Kiwimagic on June 11, 2020, 11:27:15 PM
Well...….. Did not get any feed back from Summit. Just the message order pending, So cancelled it after I ordered the one that was advertised here on Ebay, which I purchased for $285.00 Au $$.
3 days later I received a Email from that supplier telling me that the one I ordered was the last one they had and it was found to be faulty, so we have refunded you your money.
Now 3 days later they have again advertised the same Master cylinder, Last 1 of 14 already sold..
I have sent them a message asking WTF is going on.....
Will keep you posted.
In the mean time I have sent an old one of to Cardone through an order from Rockauto. Fingers crossed.
Title: Re: master cylinder rebuild
Post by: MagnumPI on July 30, 2020, 09:30:38 AM
Cardone seems to have shipped out a batch of rebuild master cylinders, those are popping up on eBay and Rockauto for reasonalbe prices ($46 + $46 core deposit or so), so if you are still looking for one, now might be the time to get it.
Title: Re: master cylinder rebuild
Post by: jdp on July 31, 2020, 11:55:36 AM
Thanks for the tip.  I have one on order now from Rockauto to have on hand as spare for our Capri fleet.

thanks...
Title: Re: master cylinder rebuild
Post by: greywolf27030 on August 01, 2020, 09:47:08 AM
That's great Magnum.
Title: Re: master cylinder rebuild
Post by: Kiwimagic on March 24, 2021, 03:43:07 AM
Master Cylinder arrived back from Cardone industries. All good works great. No problems at all. Took a while but got here in the end.
Title: Re: master cylinder rebuild
Post by: greywolf27030 on March 24, 2021, 06:08:58 AM
Well, that took long enough. Glad you finally got it though.
Title: Re: master cylinder rebuild
Post by: Kiwimagic on April 14, 2021, 01:33:31 AM
Master cylinder arrived back from Cardone Industries and seems to work OK.
Title: Re: master cylinder rebuild
Post by: 9193CapriXR2 on September 19, 2023, 12:21:55 PM
Every time I see a Capri in the pick and pull I grab a few parts....IACV, Master Cylinders, headlight motors, window motors.  Never know when Ill need one.  Found 2 unripped convertible tops/frames and had to pull those as well.  Replaced the one on my 91 with one and have the other sitting in the garage for when I need another one. 

My advice is to keep an eye on Rockauto, they offer the Cardone rebuild service from time to time and I have used it once before.