Nother neub 63 Brake ?

Sleykin · 04-25-06, 11:40 PM

Yup I am new to this board but I have been searching for 3 days for an answer to my question so out of frustration .. here goes.
I want to go to a dual master cylinder on my power brake drum/drum equipped 63 SWC. The only info I have found is that it can be done, however nobody has said how or where to get the parts. All of the single to dual conversions I have found are for converting to disk/drum or disk/disk. I don't have a problem with the drum brakes but the single MC is scary. I am old enough to have vivid memories of the brake pedal dropping to the floor at the most inconvienint of times.
So .. what MC do I need to install to get a dual MC system while retaining the original brake system?

TIA
Glenn

IH2LOSE · 04-26-06, 08:51 AM

Glen welcome abourd. Allthough I dont know of a kit,and I do know that some 63 of the parts on a 63 are 63 only parts. Its not that hard to work on brakes or it tubeing.

I would think its as easey as getting a 67 master cylender and then just re piping it by just tying into the front T with a new custom line and then tying into the the rear lines with a new custom line

When I say custom just purchase some steel lines from a local auto parts store.

Ken Anderson · 04-26-06, 09:42 AM

You are wasting money on this idea because a overhauled clean system with silicone fluid will probably outlast the car, my .02

IH2LOSE · 04-26-06, 09:56 AM

Quote:

Originally Posted by Ken Anderson

You are wasting money on this idea because a overhauled clean system with silicone fluid will probably outlast the car, my .02

Ken I think he is just looking for the peice of mind of having a daul master instead of a single,

My idea may be a problem as the drum brakes may have a problem with the master from a disk car.

WayneC · 04-26-06, 01:29 PM

I can't answer directly, not having made that mod, but you might check with these folks for their recommendation:

http://www.mpbrakes.com/

JohnZ · 04-26-06, 05:17 PM

You'll need a '67-up dual-reservoir drum/drum master cylinder (Camaro, Chevelle, etc.); they have residual pressure valves at both outlets. Disc brake masters don't have them, and you need them for a drum system.

67HEAVEN · 04-26-06, 05:21 PM

Sleykin,

Welcome to the

We're glad you signed up. Let me know if you need help with posting photos.

Sleykin · 04-26-06, 10:00 PM

Quote:

Originally Posted by JohnZ

You'll need a '67-up dual-reservoir drum/drum master cylinder (Camaro, Chevelle, etc.); they have residual pressure valves at both outlets. Disc brake masters don't have them, and you need them for a drum system.

Thanks! That was the info I was looking for. I can get a new M/C at autozone for $49.00 for a 67 Camero

I plan to replace all the lines and cylinders and use silicone DOT 5 fluid. I am considering boring the cylinders and installing bronze sleeves for that extra bit of life. (I have a lathe and mill) Silicon Bronze should outlast me in this application.

Thanks to all for the ideas and the welcome!
Glenn

Sleykin · 04-26-06, 10:17 PM

Quote:

Originally Posted by 67HEAVEN

Sleykin,

Welcome to the

We're glad you signed up. Let me know if you need help with posting photos.

Thanks! I think I can figure out the Image posting here ... Shouldn't be too much different than the Porsche forums. I would just be seriously embarrased to post pictures of this basket case just yet

It has been parked in a state of "semi asembled" for over 20 years. I was able to locate all the major pieces except the engine block (has a 350 in it) It is a long story

Hopefully I will be able to have it in "picture taking" condition within the year as I retire soon and this will be the first project on the list. The only really good thing about it is it is my wife's car so I will get lots of support when it comes to buying parts

(her ex tore it apart and never put it back together)

IH2LOSE · 04-26-06, 10:44 PM

Quote:

Originally Posted by Sleykin

. I would just be seriously embarrased to post pictures of this basket case just yet

Well listen I posted this photo of my vette when I purchased it and no person made fun of it, This is a real nice crowd here we are all car guys, And the majority of the member work on there own cars so youll see the tecnical advice is always available

Sleykin · 04-27-06, 01:55 AM

Well .. at least your tires hold air

That looks a lot like mine does now. I need to pull the body off and go over all that was done before. Little things like leaving out the body doghnuts and spliceing the metal fuel line with rubber hose .. under the body wher you can't get to it to replace it.
At least when ya start from here you can only go up

Thanks
Glenn ... maybe I'll take a picture when it gets light out

Mike McKown · 04-30-06, 06:58 PM

Quote:

Originally Posted by Sleykin

Thanks! That was the info I was looking for. I can get a new M/C at autozone for $49.00 for a 67 Camero

I plan to replace all the lines and cylinders and use silicone DOT 5 fluid. I am considering boring the cylinders and installing bronze sleeves for that extra bit of life. (I have a lathe and mill) Silicon Bronze should outlast me in this application.

Thanks to all for the ideas and the welcome!
Glenn

The '63-'64 Corvette drum brake cars used a 7/8" bore master cylinder. I think but not sure the Camaro/Chevelle is a 1" bore. Without the power boost that difference will give you a lot of pedal effort. With the booster, don't know. Just something to check.

Cliff63 · 05-01-06, 06:27 PM

Quote:

Originally Posted by JohnZ

You'll need a '67-up dual-reservoir drum/drum master cylinder (Camaro, Chevelle, etc.); they have residual pressure valves at both outlets. Disc brake masters don't have them, and you need them for a drum system.

JohnZ,

So the '67 Chevelle DMC (one inch bore) that I just purchased should work just fine with my drum brakes? No "hard" brake pedal?

Thanks, Cliff

Sleykin · 05-02-06, 12:28 AM

Quote:

Originally Posted by Cliff63

JohnZ,

So the '67 Chevelle DMC (one inch bore) that I just purchased should work just fine with my drum brakes? No "hard" brake pedal?

Thanks, Cliff

If I understand all I have gathered from my research into this. If you bought the DMC for a 67 Chevelle with Drum/Drum brakes and you have power assisted brakes you should be good. The 1" MC will require more pedal effort than the 7/8" MC. The 7/8" MC will give more pedal travel all other things being equal.

Glenn

Mike McKown · 05-02-06, 06:58 AM

[quote= The 1" MC will require more pedal effort than the 7/8" MC. The 7/8" MC will give more pedal travel all other things being equal.

Glenn[/quote]

You got it!.

The booster may make the effort a non-issue. If it wasn't PB's, I don't think you'd like the increase in pedal effort.