[Roadsters] 68 brake calipers - leak

[Pete Koernig]

Those front brakes are pretty much the same as Jaguar used  --- try:
http://www.xks.com/ --- have some good information.
 
Pete Koernig 
'70 
SPL-311 #29429, about to be hauled from Mesa, Az to Portland, OR for our son.
'69 SRL311 --- about to go up for sale...as is.
>________________________________
> From: Larry Dziuba <roadster68 at shaw.ca>
>To: Gary and Cindy Ault <aultgc at att.net>; Datsun Roadster List
<datsun-roadsters at autox.team.net> 
>Sent: Sunday, March 11, 2012 8:47 PM
>Subject: Re: [Roadsters] 68 brake calipers - leak
>  
>I forgot to mention
that I had stainless steel sleeves put in quite a while ago.  They are
spotless.  Larry.
>
>----- Original Message ----- From: "Gary and Cindy Ault"
<aultgc at att.net>
>To: "Larry Dziuba" <roadster68 at shaw.ca>; "Datsun Roadster
List" <datsun-roadsters at autox.team.net>
>Sent: Sunday, March 11, 2012 9:29 PM
>Subject: Re: [Roadsters] 68 brake calipers - leak
>
>
>> Larry,
>> 
>> The
master cylinder puts a lot of pressure on the wheel cylinders  when you
depress the pedal.  You could have a very small cut or tear in the piston
seal, and not notice it, but have it be sufficient to allow fliud past when
the brakes are used.  You
 didn't mention the condition of the cylinders, but
I presume there are no pits or other irregularities.
>> 
>> Minor pits can be
removed by honing, but I don't know how to do that with the center pin in the
cylinder.  The cylinders can be sleeved, or replaced at no small cost.
>> 
>>
Gary
>> 
>> ----- Original Message ----- From: "Larry Dziuba"
<roadster68 at shaw.ca>
>> To: "Datsun Roadster List"
<datsun-roadsters at autox.team.net>
>> Sent: Sunday, March 11, 2012 10:15 PM
>>
Subject: [Roadsters] 68 brake calipers - leak
>> 
>> 
>>> Hello Everyone, 
There has always been poor performance from my front disc brakes.  I pulled
the passenger side and found one pad was wet and would not come out
 without
some force.  It looks like brake fluid saturated it. I could not see any brake
lines that were leaking.  I then pulled the piston. It appeared to be wet
inside the dust boot.  I could not see any tears or even marks on the seal or
any scratches on the cylinder wall.  I did put in brake kits about 5 years ago
but have minimal miles on the roadster.  The lines have been bled a number of
times over the years. Could the seal leak without a tear.  It looks good.
Puzzled.  PS: the caliper is still thick enough.  Larry.
>>> 
>>>
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