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Re: Brake question
[Re: edison1970]
#2917432
05/01/21 04:35 PM
05/01/21 04:35 PM
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Joined: Jan 2011
Posts: 15,931 Central Florida
larrymopar360
Stud Muffin
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Stud Muffin
Joined: Jan 2011
Posts: 15,931
Central Florida
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DOT 5 might be part of the problem. Better for your paint in case of a spill but not for brake feel. Not enough vacuum shouldn't effect travel I don't believe, just hardness of the brakes because less assist.
Facts are stubborn things.
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Re: Brake question
[Re: edison1970]
#2917439
05/01/21 04:44 PM
05/01/21 04:44 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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I'm having issues with my power brakes on my Barracuda. Factory disc in front and drum in back. Everything is new. Bench bled the master dot 5 used. Bled all four corners until brake pedal was hard. Now I start the car and the pedal pressure drops almost 3/4 down. Could that mean I don't have enough vaccum or the booster is bad? Cam is a Lunati 703. The motor has 15-16 of vaccum at idle. "everything new"....did you set the proper air gap between the booster and master, you need to reset or confirm anytime you rebuild/replace these components, this may be your issue? Mopar's need a minimum of .020 to a max of .060 for proper operation.... MikeG
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Re: Brake question
[Re: edison1970]
#2917444
05/01/21 04:52 PM
05/01/21 04:52 PM
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Joined: Jan 2003
Posts: 25,951 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,951
Rio Linda, CA
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When I depress the pedal when it's running, the pedal goes down 3/4 of the way before the brakes start to work. If the pedal drops with the engine running, vacuum isn't your problem....the booster is working. Have you adjusted the rear shoes for a slight drag when turning the wheel? Loose drum brakes will eat up a lot of pedal travel.
The INTERNET, the MISinformation superhighway
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Re: Brake question
[Re: John_Kunkel]
#2917450
05/01/21 05:03 PM
05/01/21 05:03 PM
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Joined: Aug 2003
Posts: 43,284 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,284
Bend,OR USA
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When I depress the pedal when it's running, the pedal goes down 3/4 of the way before the brakes start to work. If the pedal drops with the engine running, vacuum isn't your problem....the booster is working. Every late model power disc brake and 4 wheel drum brake Mopar car I've driven will do what yours is doing the pedal should be really hard to push with the motor off and no vacuum, easy when running and driving, hence the "power brake" name
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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