Technical Brake system

I am attempting to upgrade my brake system and I and getting a new master cylinder and booster .My question is there appears to be some type of a red sealant around each connection thread going into the master cylinder and all others .I have tried searching but cannot find what this is and if it should be used .In the past I have used the Earls thread sealant but what to make sure what is proper .

 

Also forgot is better to go with 1" bore or bigger size for better braking .They are power brakes .

 

What car, disc / disc, drum / drum, disc / drum. Are the brakes stock now?

 

Front disc but will be upgrading front and rear disc when I do the rear end.The brakes are not stock

 

Not positive but the "red" maybe some sort of anti-seize, the Seal on most master cylinders usually depend on the inverted flare metal to metal as a seal and not a sealant per say. Others may have some input on this.

 

Two products made by Loctite fit your description. Loctite 545 Pneumatic/Hydraulic Seal and Loctite 569 Thread Sealant.

 

Thanks for the reply

 

Is there any issue with using a manual master cyl on a brake booster .I found what was originally used on my truck and its what they are calling a manual master cyl but it bolted up to the booster fine .The reason i would like to use it is cause there is a fill hole drilled perfect to fit that combo.

 

these are the two I have to choose from but the manual brake is one they had on it originally .What is the difference between the two ?

Dorman® - Brake Master Cylinder (With 2 Outlets)
Ford Mustang Manual Brake System 1978, Brake Master Cylinder With 2 Outlets M85365 by Dorman®. Bore Diameter: 15/16"; Forward Outlet Size: 7/16"-24; Rearward Outlet Size: 9/16"-18; With Reservoir; Material: Cast Iron; without Sensor; For FMSI:. Dorman’s...
Fits Following Model(s):

• Manual Brake System

SKU:
17848879
Price:
$42.31
Qty:
Delivery:
$42.31

Remove Item

Dorman® - Brake Master Cylinder (With 2 Outlets)
Ford Mustang Power Brake System 1978, Brake Master Cylinder With 2 Outlets M36445 by Dorman®. Bore Diameter: 15/16"; Forward Outlet Size: 3/8"-24; Rearward Outlet Size: 7/16"-24; With Reservoir; Material: Cast Iron; without Sensor; For FMSI:. Dorman’s...
Fits Following Model(s):

• Power Brake System

SKU:
17848880
Price:
$28.26
Qty:
Delivery:
$28.26

Remove Item

 

A master cylinder is a master cylinder - it doesn't know what's operating it. The manual will have a much deeper hole for the actuating rod so that it won't fall out. To use a manual with a booster this hole needs to be filled with a bullet type piece - make or buy. Don't forget the output from the booster is adjustable and it's absolutely critical that it is set up correctly.
Chris

 

I am having a very hard time finding a 3/8 24 to 1/8 male npt fitting for the master cyl i bought to attach my brake line .Does anyone know where to find one ?

 

Try NAPA they have the hardware to match brake lines. Fittings usually come with fittings

 

Correction mast cyl usually come with fittings. The red stuff is thread sealer and everything I have gotten with the sealer on it says do not use thread sealer of Teflon tape.

 

The bigger the bore...... the better the ABS effect you have when you late-brake into a corner
[ it is a learned skill ]

 

The master cylinder needs to be sized to fit with the calipers you are using. What size are the pistons in the calipers? What did the calipers come off of originally? What is your pedal ratio? If you can answer these questions I can give you a recommendation as to the bore size that will work. If you can give me the original application I can look it up that way.