Another master cylinder search... - Chevelle Tech
Brakes, Suspension & Steering Conversion questions & more.

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post #1 of 9 (permalink) Old Jul 18th, 19, 2:30 PM Thread Starter
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George
 
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Another master cylinder search...

So I've been coming up empty the last few days looking for a master cylinder for the 71....searched on here a bunch and anything listed doesnt seem to be available anymore....tried the local parts places, jegs and Summit....mine has the manual disk front/ drum rear and the deep push rod. Currently running the '69 mc with 1-1/8 bore with each reservoir being the same size. After reading on here it seems I need a 1" bore space instead...any thoughts?

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #2 of 9 (permalink) Old Jul 24th, 19, 6:46 AM
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sam
 
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Re: Another master cylinder search...

When I did my front disc conversion, I used Right Stuff Detaining. I bought the kit at a car show, but they had options for different master cylinders. Mine is manual disc/drum. Maybe they will have what you are looking for. Or you can try one of the other companies that does conversion kits like CPP.

1967 Royal Plum, 434BB, AFR Heads, 3.90 gears, New Chris Straub Hyd Roller!, 200r4
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post #3 of 9 (permalink) Old Jul 24th, 19, 10:03 PM
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Tom Terrific II
 
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Re: Another master cylinder search...

George, I think I have one of the big-n-little M/Cs here. PM me if interested.

IIRC, It needs a kit, like it's empty. But that can be fixed.

Tom Terrific or Terrible Tom, depending on the phase of the moon, passing cosmic rays or other factors not fully understood except by my wife.
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post #4 of 9 (permalink) Old Jul 24th, 19, 11:49 PM
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Re: Another master cylinder search...

I just used a manual brake mc for a 76 malibu. jim

Jim

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post #5 of 9 (permalink) Old Jul 26th, 19, 12:07 AM Thread Starter
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George
 
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Re: Another master cylinder search...

Quote:
Originally Posted by scalise71 View Post
When I did my front disc conversion, I used Right Stuff Detaining. I bought the kit at a car show, but they had options for different master cylinders. Mine is manual disc/drum. Maybe they will have what you are looking for. Or you can try one of the other companies that does conversion kits like CPP.
After a bunch of searching, found a Right Stuff detailing m/c that was supposed to be for the manual disc drum setup. Also has the long pushrod hole and 1 bore. When it arrived right on the box it says manual disk /disk...ugh! It looks basically the same as my current 69 m/c.

I took a chance and installed it. Brake pedal does feel better. Was able to lock up the brakes in the driveway for once. Will try a road test tomorrow.
scalise71 likes this.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #6 of 9 (permalink) Old Jul 26th, 19, 12:08 AM Thread Starter
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George
 
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Re: Another master cylinder search...

Quote:
Originally Posted by Tom Mobley View Post
George, I think I have one of the big-n-little M/Cs here. PM me if interested.

IIRC, It needs a kit, like it's empty. But that can be fixed.
Thanks Tom, I may hit you up on it. Will see how this one works since its on there now. It does feel better than the other bigger bore m/c.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is offline  
post #7 of 9 (permalink) Old Jul 26th, 19, 12:10 AM Thread Starter
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George
 
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Re: Another master cylinder search...

Quote:
Originally Posted by Jim Mac View Post
I just used a manual brake mc for a 76 malibu. jim
I looked at that one, but the bore was smaller than 1. Wasnt sure if that would work.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #8 of 9 (permalink) Old Jul 26th, 19, 12:57 AM
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Tom Terrific II
 
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Re: Another master cylinder search...

bigger bore will move more fluid faster but with less pressure.

smaller bore will move less fluid but with more pressure. May result in lower pedal.

Tom Terrific or Terrible Tom, depending on the phase of the moon, passing cosmic rays or other factors not fully understood except by my wife.
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post #9 of 9 (permalink) Old Aug 6th, 19, 10:42 PM
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Tom Terrific II
 
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Re: Another master cylinder search...

George, I found that M/C, it's empty and clean with a little surface rust, Currently looking for the lid.

Tom Terrific or Terrible Tom, depending on the phase of the moon, passing cosmic rays or other factors not fully understood except by my wife.
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