RE: {Chrysler 300} Remote Brake Booster
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RE: {Chrysler 300} Remote Brake Booster



Have a chat to these guys.  They seem to know what they are talking about.  https://www.hydroboost.com.au/techtalk.htm

 

Henry

 

From: Nick Taylor [mailto:nicksgaragesd@xxxxxxxxx]
Sent: Friday, 16 August 2024 2:49 PM
To: Henry Schleimer
Cc: James Douglas; Chrysler 300 Club International
Subject: Re: {Chrysler 300} Remote Brake Booster

 

Yes, I've been looking at the Australian ones. The VH40 is the 9 inch version. Same size as the one I need. But there still seems to be a lot of variations.

 

On Thu, Aug 15, 2024, 9:33 PM Henry Schleimer <henry.schleimer@xxxxxxxxxxxxxxx> wrote:

I don’t know if this helps at all but the VH44 boosters used as an option on all Australian built cars in the sixties are available over here. For example https://www.hemiperformance.com.au/shop/universal-vh44j-remote-brake-booster-kit-suit-disc-brakes-front-drum-brake-rear.html

 

But they typically were for 9 or 10 drums.  My parent’s 67 Valiant had one from new with 9 inch drums and a master cylinder that looked the same as a typical 300 single, but I don’t know its bore diameter.  Those brakes were over-boosted in my opinion and would lock all four crossplies if you stabbed the pedal.  However, my father chose that option as he had an artificial leg.

 

But without knowing the diameter and stoke of each to compare, I can’t give any advice about compatibility.  Maybe someone would like to delve deeper into this or just buy one to “suck it and see” as we say.

 

Hemi Performance also list a 9 inch version with higher psi output for disc braked cars but it isn’t cheap.

 

Cheers

 

Henry.

 

From: 'James Douglas' via Chrysler 300 Club International [mailto:chrysler-300-club-international@xxxxxxxxxxxxxxxx]
Sent: Friday, 16 August 2024 1:36 PM
To: Chrysler 300 List Server (chrysler-300-club-international@xxxxxxxxxxxxxxxx)
Subject: {Chrysler 300} Remote Brake Booster

 

About 10 years ago, when I “restored” my 1949 Desoto Convertible, I made one change to the car that was not stock. I rebuilt the car with a four-wheel disc brake system. The car stops too good!

 

I used the stock master cylinder, and I used a remote power brake booster like the one I had on my RAM 300K convertible in High School.

 

Midland Ross was sold a long time ago, but around 2013 the factory that made the boosters was still operating under another name. I managed to talk with the manufacturing manager who had started there in the 1970’s.  We had a long talk. They were still making these boosters. The big issue was the special rubber parts were made now in Turkey.  They are essentially he told me the same as the ones used in the 1950’s Ford Thunderbird.

 

I asked him if he had any of the pressure curves and he was kind enough to send me the two attached drawings. One with the pressures.

 

I found out that a couple of years later that the Turkey plant burned down and they had stopped making any of these remote units anymore.

 

One can try to see if the Ford Thunderbird suppliers are still sitting on any.

 

Best, James

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