Re: {Chrysler 300} 300G 2 pot master cylinder upgrade.

["D.C. Mason" <petergriffinforpresident@xxxxxxxxx>]

As a further reference, Napa used to sell the following MCs and maybe somewhere still had them (my Napa says they’ve been unavailable for months):

P1874 remanufactured

P1878 new

These are late 60s full size mopar duals.  I have used this on a couple drum/drum cars (65 NYer and 64 Newport).   Since I could not get these anymore I found that O’Reillys had a similar MC (here are photos).   I painted this but haven’t installed it yet.    None of these mentioned here have a bail, but the tops aren’t flat either so a mod like John or Danny mentioned may help.  

V/r

dave & Kya

Sent from my iPhone

On Feb 7, 2022, at 1:12 PM, John Grady <jkg@xxxxxxxxxxxxxxxxx> wrote:

hi 

Sort of partial recollection of past experiences with this :

you often cannot get cover off large dual mopar masters of late 60’s no room for the bail handle either . had to make a flat cover of Al plate with tabs held on by muffler style U bolt under master . 

Dodge dart fit too but very small reservoir . 

Never did understand that reservoir size aspect , why is small ok on dart ?

Specifically as best I can remember there is a police dodge drum / drum master about 68 ? large one , but correct valving and bore for 4 large drums .  

may have to put mechanical brake switch .  

hope it helps a bit .. 

john 

Sent from my iPhone not by choice 

On 7 Feb 2022, at 1:01 pm, dplotkin <dplotkin@xxxxxxxxxxxxxxxxxxx> wrote:

I'm sorry I thought this 300g was going to have disc brakes in front. If it's all manual the advice you've been given is good any flat top Master for a 68 Chrysler New Yorker for example will do the job. I use that under the booster of my 61 Savoy which has a ram  setup

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------

From: Bob Jasinski <rpjasin@xxxxxxxxxxx>

Date: 2/7/22 12:42 PM (GMT-05:00)

To: 'Chrysler 300 Club International' <chrysler-300-club-international@xxxxxxxxxxxxxxxx>

Subject: {Chrysler 300} 300G 2 pot master cylinder upgrade.

I was contacted a couple days ago from a shop doing work on a 300G.  The shop tech explained that the owner has requested a dual circuit,  2 pot master cylinder be installed with the required additional brake lines, and he wanted to know what master cylinder would fit.  I told him I wasn’t aware of any drum/drum master cylinder upgrades but did tell him that some have done disc/drum upgrades that included a change to a 2 pot disc/drum type master cylinder.  Has anyone done a drum/drum 2 pot master cylinder upgrade?  What master cylinder was used?

 

Bob J

 

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