FWIW, I have had this exact same problem pop up when I recently switched to
DOT5 silicone fluif. I've tone down the MC twice, and confirmed that it
works as I think it should on the bench, and pulled the guts out of the
residual pressure valve. The problem is reduced, but still there.
I'm now convinced that this is the result of different fluif properties, as
was suggested by another lister. Odd that this doesn't show up on all of
the web pages discussing the pros and cons of DOT5.
Dean Mericas
Ann Arbor, MI
1965 TR4
1974 2000 GTV
-----Original Message-----
b. The pedal travel is probably caused by the calipers/cylinders
> relaxing too far. It probably has an effect in making the squeal as
> well. So, will adding a restrictor cure both problems? Note: the older
> TR configurations have a restrictor at the rear, not the front.
>
This dreaded caliper piston knock-back has been a prevalent problem in TR6's
(which have very similar if no identical brake parts) but I never noticed it
in my TR6 until after my major overhaul in 1996. During this overhaul I
switched to silicone brake fluid. Coincidence? Perhaps. But racers have
been
fighting this problem for years and have come up with a couple of fixes.
One fix
I saw was a much beefed-up hub that flexes less. Another is a different way
to set up the wheel bearings with precision spacers which allow you to crank
the nut down tight. I have not investigated either of these and cannot
recommend for or against either one. I've just learned to live with it. In
my car it
is not a serious issue except in autocrosses.
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