RE: [Chrysler300] Re:disk brakes for 57's and all with center plane btakes

["Bob Jasinski" <rpjasin@xxxxxxxxxxx>]

I must second Wayne's comments on center plane brakes, but in my case the
observations apply to the '61 G.  I had my G out for a test drive this past
July 4th weekend after I installed new KYB shocks, so I put the car through
the paces.  It felt good, stopped square and with full control. 
 
My master and brake cylinders and are all stock components relined with
bronze inserts and silicone fluid installed in the system.  All new flex
hoses were used and he front drums were replaced with good used drums, only
cut .020" over, the originals had gone past the .060" limit so I did not
reuse them.  The shoes were relined at a local shop, Friction Materials,
that still relines brakes and clutch discs.  I brought them the drums and
they arced the relined shoes to the drums for a good fit. I always adjusts
the shoes per the manual and run the cam up tight, then back off only enough
for the wheel to turn but the drums still lightly touch the shoes when
spinning the wheel. 
 
Brake performance is quite acceptable, but they will begin to fade after
several hard stops, or extended mountain driving, but that is a rare
occurrence for me.
 
Bob J
 
 
 
 

  _____  

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of Wayne Graefen
Sent: Tuesday, July 08, 2008 9:49 AM
To: Intl 300; bleahy@xxxxxxxxxxx
Subject: [Chrysler300] Re:disk brakes for 57's



As the keeper of the '57 torch, every once in a while I must reply about
inadequate brakes of the Chrysler Centerplane type.

1. These brakes were fully adequate when new and are still adequate for
modern traffic.

Now, after 50 years, we have virtually lost the machine shop ability to arc
grind new linings to the size of the drums but there are still shops that do
it. This fitting of shoes to drum is one of two critical concerns with those
brakes. The second is that far too often, in the name of saving a few bucks,
low quality shoe linings have been purchased and they simply don't grab.

Of course there are possible other factors including the installation of
close but incorrect shoes, wheel cylinders and master cylinders down through
the cars history. There are also low quality brake hoses at parts houses and
hobby suppliers again in the name of cost savings. Some mechanics don't
bother to properly adjust front wheel bearings even to equal their set from
side to side. And suspension wear is setting in lo these many miles.

I love disc brakes too as they are superior, but even they only work right
when everything else is right. AAJ sells a fine kit with good quality parts.
There are even better kits available for more money but some require a
change to 15" wheels for caliper clearance.

Wayne G

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