[Spridgets] Bad braking

Rick Fisk refisk at chartermi.net
Sat Jan 18 08:26:37 MST 2014


Yikes!  Mixing glycol based brake fluid with silicone based fluid is a
definite bad thing.  I've heard it can cause lumps of goo in the various
cylinders.  This could even be the cause of your brake issues.  Most likely
it's bad hoses though.  A thorough flushing is in order.

And real racers don't use silicone brake fluid as it gives you a somewhat
spongy pedal under hard use.  Silicone "sponginess" is a good thing for
certain applications, but not brakes.  :-)

Sent from my keyboard

On Jan 18, 2014, at 10:20 AM, Brian Morse <owensdad74 at gmail.com> wrote:

> Thank you all for the great info!
>
> I had no idea the hoses would fail in that manner- very interesting.  I will
give Peter C a shout on Monday.
>
> And I will try my hand at searching the archives.
>
> After double checking the fluid I put in I see I used Valvoline dot 3 and 4
SYNTHETIC fluid.  I never saw that (duh).  Do I really need to tear it apart
and rebuild the whole system?!?
>
> Bri
>
> On Friday, January 17, 2014, Rick Fisk <refisk at chartermi.net> wrote:
>> Change them hoses!
>>
>> Sent from my keyboard
>>
>> On Jan 17, 2014, at 11:37 AM, Brian Morse <owensdad74 at gmail.com> wrote:
>>
>> > Greeting List,
>> >
>> > Shortly after buying my 79 a couple years ago I discovered the brakes,
>> > front and rear, would hang up.  After 20-30 minutes they would release.
>> >
>> > The PO put new wheel cylinders on the rear, so I left them alone.  Next
I
>> > pulled the calipers and rebuilt them.  To be sure they worked the master
>> > cylinder was replaced with a new one.
>> >
>> > So I got everything back together and tested- fronts and rears would
stop
>> > all wheels and release immediately.  That was a couple weeks ago.
>> >
>> > Yesterday I realized the front calipers won't release.
>> >
>> > Any ideas why?  I'd rather drive the car with working brakes.
>> >
>> > Thanks all!
>> >
>> > Bri
>> > ------------------------
>> >
>> > spridgets at autox.team.net
>> >
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