Re: Mopar master cylinders - preference?

[Gary Pavlovich <glpavlovich@xxxxxxx>]

Thank you Stan, Rich, and Mark for your input thus far.

Yes, your experience on the piston diameter harmonizes with the information 
I have read re: master cylinder selection.  The smaller piston bore in the 
MC requires less pedal effort and more pedal travel than the larger 1 
1/8"...MC piston bores.  The 1" bore MC should be used with the drum/drum 
and disc/drum manual setups and is recommended with the manual  disc/disc 
setups because excessive pedal pressure is required if a large bore MC is 
used.  The larger bore is suited for power assist disc/drum and disc/disc if 
I remember correctly.

Not sure if the 1.032" bore billet aluminum Mopar Master Cylinder requires 
nearly the same "reasonable" pedal pressure as the 1" bore cast iron; I like 
the plastic resevoir and caps for filling and checking the fluid levels as 
opposed to the cast iron MC with metal bar and one-piece metal cap - too 
much chance to spill fluid I think as well as residual fluid dripping down 
the sides of MC eating the painted MC surface.

Any more information specifically on the billet alum. vs. the cast iron 
MC's?

Thanks again,
Gary
----- Original Message ----- 
From: <chymar01@xxxxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Tuesday, December 28, 2010 7:39 PM
Subject: Re: Mopar master cylinders - preference?


> I'm not sure this will be helpful or not, but I used a 1 1/8" 
> master(aluminum 2-bolt listed for a '79 Dodge pickup from the local store 
> for 20 bucks) on my '69 Coronet with a MagnumHP adapter and I have to 
> practically stand on the pedal to stop it.
> When I did my '64 Polara 'vert, I used one with a 1" bore(listed as '81 
> Mirada also from the local store for 20 bucks) and the same adapter and it 
> stops very well with much less effort.
> I'll be switching the one on the Coronet when I get a chance to the 
> smaller one.
>
> Mark
>
> ----- Original Message ----- 
> From: "Gary Pavlovich" <glpavlovich@xxxxxxx>
> To: 1962to1965mopars@xxxxxxxxxx
> Sent: Tuesday, December 28, 2010 10:00:00 PM
> Subject: Mopar master cylinders - preference?
>
>
>
> Hope everyone had a wonderful Christmas.
>
> It is time for me to select a Mopar master cylinder for my four-wheel 
> manual disc brake Plymouth. I know staying with a 1" diameter MC piston 
> will reduce the effort needed on the pedal to actuate the manual system 
> but does anyone have exeperience/suggestions as to which Master Cylinder 
> is preferred - the Mopar 1 1/16" billet aluminum from the Diff Doctor 
> ($100 with adapter) or the Mopar cast iron unit sold by Master Power Brake 
> ($89)?
>
> The plastic caps on the billet alum. one seem like less chance of spilling 
> the caustic brake fluid as opposed to the swing over bar on the cast iron 
> unit.
>
> Let me know from your experience...
>
> Thank you,
> Gary Pavlovich
> [Non-text portions of this message have been removed]
>
>
> ---- 
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>
> 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
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>
>
>
> [Non-text portions of this message have been removed]
>
>
> ----
> Please address private mail -- mail of interest to only one person --  
> directly to that person.  I.e., send parts/car transactions and 
> negotiations as well as other personal messages only to the intended 
> recipient, not to the Clubhouse public address. This practice will protect 
> your privacy, reduce the total volume of mail and fine tune the content 
> signal to Mopar topic.  Thanks!
>
> 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
> http://www.1962to1965mopar.ornocar.org/mletiq.html and 
> http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.


----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.