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PostPosted: Sat Feb 01, 2020 8:54 pm 
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Turbo Slant 6
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Joined: Mon Jan 25, 2010 11:29 pm
Posts: 568
Location: Seattle, WA
Car Model*: 75 Dart SE (2),75 Swinger, 74 Dart Sport,91 Ram RV
Planning the project cars- 74 Sport and 75 Swinger. Both have the factory original power brake diaphragm/master assemblies installed. I can budget swapping the units out for "rebuilt" (using the term loosely). Any experience with what brands or sources for these? I worry about the old rubber in the originals I have. If there are kits, I could perhaps rebuild the diaphragms on the work bench. Ideas???

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"Louise", a 1976 Dart Custom project, (now sadly reverted to being just an "organ donor" to our other project Darts.)


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PostPosted: Sun Feb 02, 2020 10:07 am 
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Joined: Thu Oct 31, 2002 5:39 pm
Posts: 23428
Location: North America
Car Model*:
Do not piss away money on the garbage "remanufactured" units you can buy at a parts store (Cardone, etc). Go directly to Booster Dewey.


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PostPosted: Sun Feb 02, 2020 11:55 am 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 12476
Location: Fircrest, WA
Car Model*: 82 Ramcharger, 76 D100
SlantSixDan wrote:
Do not piss away money on the garbage "remanufactured" units you can buy at a parts store (Cardone, etc). Go directly to Booster Dewey.


I second this. I have a "Cardone" "remanufactured" unit on my 76 D100. It is no better than the factory unit I took off. The brakes are super touchy and go into full lockup unless I am careful how I apply rake pressure. When I get time and money I am shipping my original unit out to Booster Dewey.

I tried a "Cardone" reman unit on my 82 Ramcharger and removed it. It had been rebuilt with an internal fault that make the brakes self-apply if I drove faster than 7 miles per hour. I almost went through the windshield three times in the first block of the test drive after I installed it. Seriously, I would let the truck idle in gear and once it picked up speed the brake pedal would drop and the brakes locked up without me touching either the gas or brake pedal. I replaced it with an original Mopar booster from a junked 86 truck.

Reman boosters aren't available for the D series trucks or ramchargers anymore, but I still will never put a cardone booster on any vehicle I own. Remember- "Cardone? Cardon't."


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PostPosted: Sun Feb 02, 2020 6:58 pm 
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EFI Slant 6

Joined: Thu Jun 07, 2012 4:29 pm
Posts: 480
Location: Houston
Car Model*: 68 Valiant
Exactly. Dewey Booster all the way.


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PostPosted: Mon Feb 03, 2020 4:52 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 5516
Location: IRWIN PA
Car Model*:
What causes the commercially remanned units to overboost like that?

Greg

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Greg Ondayko
69 Dart http://www.youtube.com/hyperpack
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PostPosted: Mon Feb 03, 2020 9:35 am 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 12476
Location: Fircrest, WA
Car Model*: 82 Ramcharger, 76 D100
Greg Ondayko wrote:
What causes the commercially remanned units to overboost like that?

Greg


I'm not sure, but I am guessing it is a failed seal or valve that allows the full application of engine vacuum immediately upon pressing the pedal. For all I know, the Cardone "remanufacturing" process involves nothing more than a can of spray paint.


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PostPosted: Mon Feb 03, 2020 3:58 pm 
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Turbo Slant 6
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Joined: Mon Jan 25, 2010 11:29 pm
Posts: 568
Location: Seattle, WA
Car Model*: 75 Dart SE (2),75 Swinger, 74 Dart Sport,91 Ram RV
Great feedback! Thanks to all. P

_________________
"Louise", a 1976 Dart Custom project, (now sadly reverted to being just an "organ donor" to our other project Darts.)


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PostPosted: Fri Feb 07, 2020 12:09 am 
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 12419
Location: Park Forest, Illinoisy
Car Model*: 68 Valiant
The pushrod in a rebuilt booster usually needs to be adjusted.

https://board.moparts.org/ubbthreads/ubbthreads.php/topics/1833386/adjusting-the-power-brake-booster-push-rod.html

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PostPosted: Sun Feb 09, 2020 9:05 pm 
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Turbo Slant 6
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Joined: Mon Jan 25, 2010 11:29 pm
Posts: 568
Location: Seattle, WA
Car Model*: 75 Dart SE (2),75 Swinger, 74 Dart Sport,91 Ram RV
Wow. I had no idea. Thanks! P

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"Louise", a 1976 Dart Custom project, (now sadly reverted to being just an "organ donor" to our other project Darts.)


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