[Tigers] Brake Issue

[Joe Brown]

An update on my master cylinder issue.  I dug out the original master
cylinder that came with the car and I tore it apart and compared it to the
cheap replacement I bought a couple of years ago.  All of the internals
look to be the same except for the piston.  The original piston has a very
deep depression where the push rod fits and the cheap replacement has a
very shallow depression.  I did some more searching and found a discussion
on the SAOCA website (
http://forum.sunbeamalpine.org/index.php?threads/brake-master-cylinder-issue.25568/
) that describes exactly what I am seeing.  I'm betting that the master
cylinder I bought is either for an older Alpine or some other British car.
I have a new one on order from Sunbeam Specialties.

Thanks,
Joe Brown

On Thu, Jun 24, 2021 at 3:48 PM Joe Brown <jbbrown1980 at gmail.com> wrote:

> I should clarify.  I had the brake locking problem before I replaced or
> rebuilt everything.  And I still have the same problem.  Could it be
> something with the master cylinder?
>
> Thanks,
> Joe
>
> On Thu, Jun 24, 2021 at 3:45 PM Joe Brown <jbbrown1980 at gmail.com> wrote:
>
>> I have brand new rubber hoses that I got from Sunbeam Specialties last
>> week.
>>
>> On Thu, Jun 24, 2021 at 3:42 PM Donald Antilla <fast427 at sbcglobal.net>
>> wrote:
>>
>>> I had this problem on two different cars. The cause was old flexible
>>> hydraulic hoses that had deteriorated inside.
>>> I changed them and the problem was resolved.
>>>
>>> From Don's iPhone 203-592-8427
>>> Or 203-264-8301 home
>>>
>>> > On Jun 24, 2021, at 4:39 PM, Joe Brown via Tigers <
>>> tigers at autox.team.net> wrote:
>>> >
>>> > 
>>> > Hey,
>>> >
>>> > I'm scratching my head over an issue I'm having with my brakes.  This
>>> actually started last year and I'm just now trying to sort it out.
>>> >
>>> > Basically, after pumping the brake pedal a few times the front brakes
>>> lock up (only the fronts).  If I crack open either bleed screw they free
>>> up.  In fact, cracking open the line anywhere going back to the master
>>> cylinder frees up the brakes.
>>> >
>>> > I have bypassed the booster, replaced all of the rubber lines and
>>> rebuilt the calipers.  This seems to leave the master cylinder.  I
>>> disconnected the brake line from the master cylinder and put a short line
>>> on it that feeds back into the master cylinder reservoir so I could bleed
>>> any air out of it.  That all seems to work okay.
>>> >
>>> > So, I'm looking for other ideas.
>>> >
>>> > Thanks,
>>> > Joe Brown
>>> > _______________________________________________
>>> >
>>> > tigers at autox.team.net
>>> >
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>>>
>>>
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