Rebuilding Master Cylinder
Thread Starter
Melting Slicks
Joined: Feb 2000
Posts: 3,052
Likes: 0
From: Vancouver BC, Canada
Rebuilding Master Cylinder
Hey guys. Has anyone had luck with rebuilding their M/C with a kit?
Mine appears to be working fine, but I am replacing calipers, lines etc and now would be an opportune time service the M/C if required. I don't think I need too replace it with a new unit quiet yet. Can it hurt to install such a kit? What problems are typical of a bad M/C?
Thanks :)
Mine appears to be working fine, but I am replacing calipers, lines etc and now would be an opportune time service the M/C if required. I don't think I need too replace it with a new unit quiet yet. Can it hurt to install such a kit? What problems are typical of a bad M/C?
Thanks :)
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Re: Rebuilding Master Cylinder (Turbo-Jet)
if you pull it apart, look down the piston bore, if there's any pitting or corrosion I would replace it since they are cheap and it's much more work to properly rebuild them with all the cleaning involved.
Safety Car
Joined: Jun 2002
Posts: 4,751
Likes: 2,499
From: Buckeye, AZ
St. Jude Donor '12-'13
Re: Rebuilding Master Cylinder (Turbo-Jet)
I did it to keep a numbers match master. It was easy, and I had great results. It took an hour from removal to reinstall. Follow the GM manual; make sure you clean the cylinder and check for corrosion. If you don't care about orginality masters are cheap; but I have read a lot of horror stories about problems with the "professionaly" rebuilt ones, especially from your discount auto stores.
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Re: Rebuilding Master Cylinder (Turbo-Jet)
Hey guys. Has anyone had luck with rebuilding their M/C with a kit?
Mine appears to be working fine, but I am replacing calipers, lines etc and now would be an opportune time service the M/C if required. I don't think I need too replace it with a new unit quiet yet. Can it hurt to install such a kit? What problems are typical of a bad M/C?
Thanks :)
Mine appears to be working fine, but I am replacing calipers, lines etc and now would be an opportune time service the M/C if required. I don't think I need too replace it with a new unit quiet yet. Can it hurt to install such a kit? What problems are typical of a bad M/C?
Thanks :)
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
Re: Rebuilding Master Cylinder (pws69)
...I sent my MC to Apple Hydraulics in NY for a new sleeve, then rebuilt it from there myself. Apple did a real nice job and I still have my matching unit.
Master cylinder problems manifest themselves as brake failure in one or both circuits or fluid leaks.
By the way, the kit you show is for a 77 and later master cylinder. You need a kit for the deep-well piston whether you have manual or power brakes.
Racer
Joined: Jan 2004
Posts: 263
Likes: 1
From: 20,000 leagues under the sea
Re: Rebuilding Master Cylinder (Turbo-Jet)
I bought the kit also. went to install it and discoverd the MC had been bored oversize and fited with oversize seals :mad Save the headache and go with new. :thumbs:
Le Mans Master
Joined: Jun 2002
Posts: 8,339
Likes: 24
From: I can walk to MA
Re: Rebuilding Master Cylinder (68raggtop)
I have found rebuilt units are dirt cheap ... for good reason.
A new one would be good, but not cheap.
I will be rebuilding my 75 unit ... with a similar kit.
If you want something done right ... DIY. :seeya
A new one would be good, but not cheap.
I will be rebuilding my 75 unit ... with a similar kit.
If you want something done right ... DIY. :seeya
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Team Owner
Joined: Mar 2002
Posts: 24,160
Likes: 78
Re: Rebuilding Master Cylinder
This is something I've been contemplating as well. While it's not an exorbitant cost for a new MC, it is still a significant savings to rebuild. So what I've gathered here is essentially...
if bore = good then rebuild otherwise new MC.
yes?
btw, your pic is wrong .. you prob. need this one
[Modified by wcsinx, 6:23 PM 3/29/2004]
if bore = good then rebuild otherwise new MC.
yes?
btw, your pic is wrong .. you prob. need this one
[Modified by wcsinx, 6:23 PM 3/29/2004]
