[DeTomaso] Front Brake Caliper Piston Sticking

[Guido deTomaso]

Who is "Guy"?
Anyway, are the original style of brake hose still available?  Maybe I could spring for new ones.
Probably will bleed the front brakes / change the fluid when I get a chance, like summertime.  Does anyone still remove the calipers and bleed them in different orientations, tap them with a hammer to help release any air bubbles, or is that more or less considered a voodoo ritual now ?
See separate report on Anti-Football ...
GD
 

      From: Mike Drew via DeTomaso <detomaso at poca.com>
 To: detomaso at POCA.com 
 Sent: Friday, January 1, 2016 12:28 PM
 Subject: Re: [DeTomaso] Front Brake Caliper Piston Sticking
   
  Guy wrote:
  Very recently noticed the left front brake is late to apply and late to
  release, causing significant swerving.
  Was thinking it might "limber up" with additional driving, now
  wondering if more driving will only make it worse.
  Got to Alameda and back + San Ramon and back earlier, both ~100 mile
  round trips, no issue.  This started after that.
  Am signed up for a multi-hundred mile event on the first, been too cold
  and rainy to do any tinkering.  So maybe I get stranded with a locked
  wheel.  Or the problem just goes away.
  Thoughts, predictions, experience ?
  >>>Not getting this until the first, unfortunately.  I presume you are
  going on the Anti-Football Rally?  That's a great event!
  I will join the chorus of others who suggest the fault lies with the
  brake hoses.  Earlier this year, you may recall a short blurb in the
  PCNC newsletter about a small tech session at Garry Choate's house.  We
  were helping to get a 14K original mile '72 back on the road; the car
  is bone stock.  Braking left something to be desired and the owner
  bought Porterfield pads.  During the installation process we discovered
  that three of the four calipers were almost completely non-functional
  due to stock hoses that had deteriorated and swollen internally,
  cutting off the flow of fluid (and pressure).  The car was projected to
  drive there and drive home at the end of the day; instead it remained
  behind on jackstands while new braided steel flex hoses were sourced.
  Based on that one experience, and knowing that your car lies dormant
  for very long periods of time, I would suggest that you start there.
  It may well be that your calipers are still in fine shape and require
  no attention, and all you have to do is change the hoses.  At this
  point, I think you should do it just as a matter of principle--yours
  are 40 years old, after all....
  Hope you had fun this morning.  Let us know how it went?
  Mike

_______________________________________________

Detomaso Forum Managed by POCA
Posted emails must not exceed 1.5 Megabytes
DeTomaso mailing list
DeTomaso at poca.com
http://poca.com/mailman/listinfo/detomaso_poca.com

To manage your subscription (change email address, unsubscribe, etc.) use the links above.


  
-------------- next part --------------
   Who is "Guy"?
   Anyway, are the original style of brake hose still available?  Maybe I
   could spring for new ones.
   Probably will bleed the front brakes / change the fluid when I get a
   chance, like summertime.  Does anyone still remove the calipers and
   bleed them in different orientations, tap them with a hammer to help
   release any air bubbles, or is that more or less considered a voodoo
   ritual now ?
   See separate report on Anti-Football ...
   GD
     __________________________________________________________________

   From: Mike Drew via DeTomaso <detomaso at poca.com>
   To: detomaso at POCA.com
   Sent: Friday, January 1, 2016 12:28 PM
   Subject: Re: [DeTomaso] Front Brake Caliper Piston Sticking
     Guy wrote:
     Very recently noticed the left front brake is late to apply and late
   to
     release, causing significant swerving.
     Was thinking it might "limber up" with additional driving, now
     wondering if more driving will only make it worse.
     Got to Alameda and back + San Ramon and back earlier, both ~100 mile
     round trips, no issue.  This started after that.
     Am signed up for a multi-hundred mile event on the first, been too
   cold
     and rainy to do any tinkering.  So maybe I get stranded with a locked
     wheel.  Or the problem just goes away.
     Thoughts, predictions, experience ?
     >>>Not getting this until the first, unfortunately.  I presume you
   are
     going on the Anti-Football Rally?  That's a great event!
     I will join the chorus of others who suggest the fault lies with the
     brake hoses.  Earlier this year, you may recall a short blurb in the
     PCNC newsletter about a small tech session at Garry Choate's house.
   We
     were helping to get a 14K original mile '72 back on the road; the car
     is bone stock.  Braking left something to be desired and the owner
     bought Porterfield pads.  During the installation process we
   discovered
     that three of the four calipers were almost completely non-functional
     due to stock hoses that had deteriorated and swollen internally,
     cutting off the flow of fluid (and pressure).  The car was projected
   to
     drive there and drive home at the end of the day; instead it remained
     behind on jackstands while new braided steel flex hoses were sourced.
     Based on that one experience, and knowing that your car lies dormant
     for very long periods of time, I would suggest that you start there.
     It may well be that your calipers are still in fine shape and require
     no attention, and all you have to do is change the hoses.  At this
     point, I think you should do it just as a matter of principle--yours
     are 40 years old, after all....
     Hope you had fun this morning.  Let us know how it went?
     Mike
   _______________________________________________
   Detomaso Forum Managed by POCA
   Posted emails must not exceed 1.5 Megabytes
   DeTomaso mailing list
   [1]DeTomaso at poca.com
   [2]http://poca.com/mailman/listinfo/detomaso_poca.com
   To manage your subscription (change email address, unsubscribe, etc.)
   use the links above.

References

   1. mailto:DeTomaso at poca.com
   2. http://poca.com/mailman/listinfo/detomaso_poca.com