Re: 70 Challenger brakes
[Re: Carsavior]
#2381887
10/04/17 06:01 PM
10/04/17 06:01 PM
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Joined: Jan 2006
Posts: 2,398 White Plains, NY
VCODE
top fuel
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top fuel
Joined: Jan 2006
Posts: 2,398
White Plains, NY
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Also check to see if the master cylinder rod is adjusted and has about .30 play and is not keeping the brakes on. Bob
Mom & Dad let me buy a brand new 70 Challenger R/T 440 Six-Pack Super Trac Pack when I was 17
(Robert what is a 440 Six-Pack)
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Re: 70 Challenger brakes
[Re: VCODE]
#2381919
10/04/17 06:19 PM
10/04/17 06:19 PM
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Joined: May 2003
Posts: 96,666 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
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Also check to see if the master cylinder rod is adjusted and has about .30 play and is not keeping the brakes on. Bob Make that .03" Not .30". .30 is almost 5/16th of an inch, which is more than 1/4 inch, WAY too much. :-)
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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Re: 70 Challenger brakes
[Re: amxautox]
#2382040
10/04/17 08:05 PM
10/04/17 08:05 PM
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Joined: Jan 2006
Posts: 2,398 White Plains, NY
VCODE
top fuel
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top fuel
Joined: Jan 2006
Posts: 2,398
White Plains, NY
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Also check to see if the master cylinder rod is adjusted and has about .30 play and is not keeping the brakes on. Bob Make that .03" Not .30". .30 is almost 5/16th of an inch, which is more than 1/4 inch, WAY too much. :-) thanks, turned number around while typing.
Mom & Dad let me buy a brand new 70 Challenger R/T 440 Six-Pack Super Trac Pack when I was 17
(Robert what is a 440 Six-Pack)
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Re: 70 Challenger brakes
[Re: Carsavior]
#2382132
10/04/17 11:17 PM
10/04/17 11:17 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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new calipers & it is still dragging? Both sides dragging or just one? You might jack up the front end & hit the brakes to get em dragging then loosen a caliper bleeder to see if it is a psi or a mechanical (caliper) problem tho with both sides acting up at the same time all of a sudden for sure sounds like a psi issue. As said if power then check the pushrod round nub clearance. Post how it turns out. EDIT If power I would remove the 4 MC nuts & space the MC slightly forward from the booster with some washers & see if that resolves it & if so then I would go ahead & seperate the MC from the booster & measure the gap/shorten the rounded pushrod nub to get ~.020" gap.
Last edited by RapidRobert; 10/05/17 01:31 PM.
live every 24 hour block of time like it's your last day on earth
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Re: 70 Challenger brakes
[Re: Carsavior]
#2382720
10/05/17 10:41 PM
10/05/17 10:41 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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The combination valve is a combination of proportion and metering in one assembly.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 70 Challenger brakes
[Re: Supercuda]
#2382766
10/05/17 11:52 PM
10/05/17 11:52 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I'm assuming when you crack the "out" line from the prop valve forward to the front calipers that they release?
live every 24 hour block of time like it's your last day on earth
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Re: 70 Challenger brakes
[Re: Carsavior]
#2382821
10/06/17 02:19 AM
10/06/17 02:19 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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iirc a guy used no valve at all with 4 wheel discs & it was fine. You could get some short lengths of prefabbed 3/16" brake lines & some double female 3/8-24 connectors at your parts house & bypass it & see how it acts. Not exactly the same but I added '76 A (2.75 bore) discs to the front of my 65 dart & kept the OE splitter & no added prop valve and a dual bowl 1&1/8" alum MC & it worked flawless. It would lockup the rears (10x2 or 2&1/4 (whatever the BBP 7&1/4 is) with hard brakeing but no issue. Ceramic pads in the front. No pad wear that I ever noticed. EDIT the connectors are double female IFF inverted flare female (will have a recessed conical seat on each side of the brass connector)
Last edited by RapidRobert; 10/06/17 01:01 PM.
live every 24 hour block of time like it's your last day on earth
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