66 power brake conversion
Burning Brakes
Joined: Mar 2021
Posts: 998
Likes: 388
From: Tyrone, GA
The term disc chamber refers to the MC chamber reservoir that holds the fluid and the disc chamber is larger than the drum chamber. I believe the bore and stroke are the same through the MC. As I said earlier, many people have converted their cars to front disc but do not have the restrictor valve in line and never know that their system is not properly set up. The only way to tell is through trial and error as far as I know. I have no idea what you are talking about from the '80s and the disc pad holdback. I do know that discs require more brake fluid to operate than drums due to pad wear if that is what you are referring to. I was not aware that drum/disc MC was still available with the built-in restrictor valve. If so then this guy should buy one. I looked but could not find one.
Last edited by inspectorudy; Jun 21, 2022 at 10:02 PM.
Le Mans Master
Joined: Feb 2012
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From: Western Massachusetts
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The term disc chamber refers to the MC chamber reservoir that holds the fluid and the disc chamber is larger than the drum chamber. I believe the bore and stroke are the same through the MC. As I said earlier, many people have converted their cars to front disc but do not have the restrictor valve in line and never know that their system is not properly set up. The only way to tell is through trial and error as far as I know. I have no idea what you are talking about from the '80s and the disc pad holdback. I do know that discs require more brake fluid to operate than drums due to pad wear if that is what you are referring to. I was not aware that drum/disc MC was still available with the built-in restrictor valve. If so then this guy should buy one. I looked but could not find one.
Trial and error with brakes can mean death. No trial and error. There is a plethora of information about brakes, hydraulics and conversions on line and elsewhere. All master cylinders, disk/drum, drum/drum come with the residual valve installed. The extra fluid a disk reservoir holds is not to shoot "more" fluid to the disk circuit. Brake systems are selected based on caliper piston diameter, wheel cylinder bore and master cylinder bore dimensions. Its a math equation complicated by clearance. But its always math, NEVER trial and error. You are arguing with someone who has worked with old car brakes a long time. I know you mean well. I know you want to help. But your use of terminology and your facts are not correct and could lead someone to a problem. I'm not responding to you for ego sake but safety sake.
Dan
Burning Brakes
Joined: Mar 2021
Posts: 998
Likes: 388
From: Tyrone, GA
I'll certainly defer to your knowledge on this subject and was only trying to help by telling my experience. Maybe you could give him some actual part numbers of the things he will need since you have done so many?
Le Mans Master
Joined: Feb 2012
Posts: 5,371
Likes: 2,878
From: Western Massachusetts
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Dan
Le Mans Master
Joined: Feb 2012
Posts: 5,371
Likes: 2,878
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
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