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hard brakes on a 1969 Charger #544290
12/03/09 10:09 PM 12/03/09 10:09 PM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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I have a 1969 Dodge charger big block car with power drum brakes. The engine is a non matching 440 with a little more than a mild cam, Torker II intake, 750 Holley, and headers. My problem is when I push on the brakes, the peddle doesn't move much and the car does stop, but then the brakes kind of stick towards the floor. My brakes lights are always staying on. I have to put my foot behind the brake peddle and pull it back........any ideas?????????????


thanks in advance!!!


( it takes a Mopar, to beat a Mopar!
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Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544291
12/03/09 10:18 PM 12/03/09 10:18 PM
Joined: Nov 2003
Posts: 3,458
Dandridge TN
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Dabee Offline
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Dandridge TN
The bower brake booster is probably bad.
Re: hard brakes on a 1969 Charger [Re: Dabee] #544292
12/03/09 10:31 PM 12/03/09 10:31 PM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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that is what I'm hoping but dont want to just throw money at it and not have that be it as they are not cheap.

( it takes a Mopar, to beat a Mopar!
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Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544293
12/03/09 10:43 PM 12/03/09 10:43 PM
Joined: Nov 2003
Posts: 3,458
Dandridge TN
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Dabee Offline
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Dandridge TN
I had the same problem on my 69 Super Bee a few years back. It was the booster.
Re: hard brakes on a 1969 Charger [Re: Dabee] #544294
12/03/09 10:45 PM 12/03/09 10:45 PM
Joined: Jul 2003
Posts: 6,167
Maryland
GO_Fish Offline
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Maryland
I had a '71 Duster, manual disc brake car, no booster. Brake pedal stayed low and brake lights stayed on. Master cylinder was bad.

Scott B. "I'm a self-made man... I started with nothing, and I still have most of it!" 68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph 69 340 GTS stock 14.18@ 95.60 mph 01 5.9L Ram 1500 Quad Cab 4x4 01 3.5L 300M 16.23@ 86.97 mph
Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544295
12/03/09 10:49 PM 12/03/09 10:49 PM
Joined: Nov 2003
Posts: 3,458
Dandridge TN
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Dabee Offline
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Check with NAPA the usually have rebuilds available.
Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544296
12/03/09 10:54 PM 12/03/09 10:54 PM
Joined: Nov 2004
Posts: 1,601
Hatfield,Pa.
bigD Offline
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Hatfield,Pa.
It could be air in the system,bad master cyl.,bad booster, drum brakes out of adjustment or not enough vacuum because of the cam (at low speeds/idle) ,,D.

2015 Chrysler200s,2008 Charger R/T R&T,1999 Dakota R/T,1999 Viper ACR,1968 Charger R/T.
Re: hard brakes on a 1969 Charger [Re: Dabee] #544297
12/03/09 10:54 PM 12/03/09 10:54 PM
Joined: Jan 2003
Posts: 32,971
Grand Prairie,Texas
stumpy Offline
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Check the ammount of vacuum you have at the booster.
Re: hard brakes on a 1969 Charger [Re: stumpy] #544298
12/03/09 11:00 PM 12/03/09 11:00 PM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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I will check the vacuum now, not to sure how though.

( it takes a Mopar, to beat a Mopar!
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Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544299
12/03/09 11:05 PM 12/03/09 11:05 PM
Joined: Jan 2003
Posts: 32,971
Grand Prairie,Texas
stumpy Offline
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Use a vacuum gauge or a mity vac.
Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544300
12/03/09 11:06 PM 12/03/09 11:06 PM
Joined: Nov 2004
Posts: 1,601
Hatfield,Pa.
bigD Offline
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Go down to the local autoparts place and p/u a vacuum gauge,then find some place to tap into on the carb(not the distributor port on the side of the carb),preferably on the base plate or vacuum Tee the go's to the brake booster,D.

Last edited by bigD; 12/03/09 11:07 PM.
2015 Chrysler200s,2008 Charger R/T R&T,1999 Dakota R/T,1999 Viper ACR,1968 Charger R/T.
Re: hard brakes on a 1969 Charger [Re: bigD] #544301
12/03/09 11:08 PM 12/03/09 11:08 PM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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Hey thanks a bunch, do you think low vacuum would keep the brake peddle from returning to its starting point? and How much vacuum should I have at the brake booster?

( it takes a Mopar, to beat a Mopar!
email me at moparleaner@gmail.com )
Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544302
12/03/09 11:16 PM 12/03/09 11:16 PM
Joined: Feb 2003
Posts: 10,224
Someplace you aren't
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SomeCarGuy Online content
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You could get a drum master and the mounting plate and do away with the booster, as an option.
Re: hard brakes on a 1969 Charger [Re: SomeCarGuy] #544303
12/03/09 11:38 PM 12/03/09 11:38 PM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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Hermiston Oregon
maybe, but I looking to do kind of what the factory gave me to work with minus the built 440. thanks

( it takes a Mopar, to beat a Mopar!
email me at moparleaner@gmail.com )
Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544304
12/04/09 12:20 AM 12/04/09 12:20 AM
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
dave571 Offline
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It could be a bad booster, but I've noticed that the boosters on drum cars can be quite weak before they cause problems.

I did have a booster go bad on my 68 newport driver 2 years ago, but it only caused hihg pedal effort. The brakes did still work fine, and I didn't have to pull up on the pedal.

Maybe look at the fluid condition. Dark fluid is an indicator of the master going bad.
Re: hard brakes on a 1969 Charger [Re: dave571] #544305
12/04/09 12:45 AM 12/04/09 12:45 AM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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RapidRobert Offline
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Lincoln Nebraska
You might split the M/C/booster & (eng idling) hit the brake & if still acting up that eliminates the M/C as the problem but see what the pushrod clearance is while you are in there & might see if the check valve is available seperately if it itself turns out to be the culprit.

live every 24 hour block of time like it's your last day on earth
Re: hard brakes on a 1969 Charger [Re: RapidRobert] #544306
12/04/09 01:38 AM 12/04/09 01:38 AM
Joined: Jul 2004
Posts: 751
Hermiston Oregon
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mopar_leaner Offline OP
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I bought a vacuum gauge tonight and checked vacuum where it hooks into the brake booster, and it showed 13 inches at an idle.

( it takes a Mopar, to beat a Mopar!
email me at moparleaner@gmail.com )
Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544307
12/04/09 09:18 AM 12/04/09 09:18 AM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline
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I sent my p/brake booster for my '69 Coronet R/T to Booster Dewey.
He rebuilds and restores them....Great guy to deal with, and he does excellent work!
Good luck!!

http://boosterdeweyexchange.com/

5645389-rsz_booster2.jpg (98 downloads)
Re: hard brakes on a 1969 Charger [Re: mopar_leaner] #544308
12/04/09 10:02 AM 12/04/09 10:02 AM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
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Quote:

I have a 1969 Dodge charger big block car with power drum brakes. The engine is a non matching 440 with a little more than a mild cam, Torker II intake, 750 Holley, and headers. My problem is when I push on the brakes, the peddle doesn't move much and the car does stop, but then the brakes kind of stick towards the floor. My brakes lights are always staying on. I have to put my foot behind the brake peddle and pull it back........any ideas?????????????

All good ideas here, but you might want to start with the pedddle linkage to make sure it is free. Even with a bad booster or MC, it should return to the stop position.


thanks in advance!!!




Fastest 300
Re: hard brakes on a 1969 Charger [Re: Crizila] #544309
12/04/09 11:24 AM 12/04/09 11:24 AM
Joined: Jan 2003
Posts: 21,081
Niles , Ohio
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therocks Offline
oh wait.but hey.lets see.oh yeah.
therocks  Offline
oh wait.but hey.lets see.oh yeah.
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Posts: 21,081
Niles , Ohio
Air in the system will give you a mushy pedal.Low vacuum or bad booster gives you a hard pedal.Rocky

Chrysler Firepower
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