[Spridgets] Master Cylinders

[GUY DAY]

Rick,You said <snip> 'And I've heard that some of the currently available new master cylinders come with a proviso in their warranty stating that the warranty is void if silicone fluid is used.'  <snip> perhaps you could be more informative and say which new master cylinders have this slippery warranty avoiding comment?  It would appear to be a very poor quality master cylinder that can't use it and I wouldn't like to avoid using such dung forged cr*p.However, if the master cylinders are to be used with an ABS system this would be right as silicone viscosity is such that ABS struggles to cope with the restitution phases at 32hz plus. 
A master cylinder is a pump, plain and simple.  If they are not pumping they are faulty.  If they have been just been re-sealed by one person there can be a problem in how the seals are located or positioned and if it is happening to both master cylinders it would suggest something as drastic as having the main seals the wrong way round!  The limiting pressure in the clutch may support this thought.  Without more information it is hard to comment.
Guy R Day

  
 

    On Monday, 18 April 2016, 2:13, Rick Fisk via Spridgets <spridgets at autox.team.net> wrote:
 

 Hi Bob,
Everyone else must be out driving their cars.  Or out in the garage working on them.  :-)
I would not bother trying to rebuild the master cylinders.  Replace them with new components.  Much less hassle and a better chance of success.  You've already replaced the Bugeye stuff with later components so you don't have to worry about originality.
That said, I would also use regular brake fluid.  I've never cared for the silicone stuff.  And I've heard that some of the currently available new master cylinders come with a proviso in their warranty stating that the warranty is void if silicone fluid is used.
Rick

Sent from my keyboard
On Apr 17, 2016, at 4:19 PM, Bob Kitterer via Spridgets <spridgets at autox.team.net> wrote:



OK, I am at my wits end tiring to get the hydraulics to work.  So who / where should I go to get the master cylinders rebuilt which may mean reboring.  I have separate masters for the brakes and the clutch, early Sprite MK IV.  Also am using silicon brake fluid.
Recently honed and put new seals in both masters, brake and slave cylinders and disk calipers.  Am getting no fluid movement in the brakes.  Have fluid in the clutch slave but not enough pressure to move the slave cylinder.  The clutch slave has Gerard's remote bleed valve an fluid moves through this valve with no air.

Bob  Kitterer
1960 Austin Healey Sprite (Mk IV in disguise)1966 Austin Healey Sprite Mk III (Trevor) - still in boxes2013 Miata
Pay it ForwardThanks Frank


------------------------

spridgets at autox.team.net

Donate: http://www.team.net/donate.html
Suggested annual donation: $12.75

Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/refisk@chartermi.net


------------------------

spridgets at autox.team.net

Donate: http://www.team.net/donate.html
Suggested annual donation: $12.75

Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/grday@btinternet.com


  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/spridgets/attachments/20160418/cf503950/attachment.html>