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All new brakes, low and hard pedal #1568417 01/25/14 11:46 AM 01/25/14 11:46 AM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	I have a 71 Challenger in the shop that got all new power front disc brakes, lines, etc. We've bled the system and the pedal is low and hard. There hardly seems to be any throw to the pedal. What could be causing this?

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568418 01/25/14 12:00 PM 01/25/14 12:00 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: I have a 71 Challenger in the shop that got all new power front disc brakes, lines, etc. We've bled the system and the pedal is low and hard. There hardly seems to be any throw to the pedal. What could be causing this? All stock parts or not? If not what does it have? 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.

Re: All new brakes, low and hard pedal [Re: Supercuda] #1568419 01/25/14 12:03 PM 01/25/14 12:03 PM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	claipers and rear brakes are all stock. Stock distribution valve. Some BS little brake booster with what looks like a corvette/GM style master cylinder

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568420 01/25/14 12:08 PM 01/25/14 12:08 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: claipers and rear brakes are all stock. Stock distribution valve. Some BS little brake booster with what looks like a corvette/GM style master cylinder Well, I hesitate to point the finger, but non-stock stuff is where I would look first. Is this a conversion to discs from drums? 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.

Re: All new brakes, low and hard pedal [Re: Supercuda] #1568421 01/25/14 12:16 PM 01/25/14 12:16 PM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	Not sure if it is a conversion or not. Car came to me in pieces with only rotors - no other brake components whatsoever. Customer supplied parts...

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568422 01/25/14 04:41 PM 01/25/14 04:41 PM
Joined: Jan 2003 Posts: 31,049 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,049 Oregon	Wrong pushrod maybe?

Re: All new brakes, low and hard pedal [Re: AndyF] #1568423 01/25/14 04:45 PM 01/25/14 04:45 PM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	That's the first thing i am going to check out - it does not seem to have enough throw.

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568424 01/25/14 06:27 PM 01/25/14 06:27 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Let us know. I hate installing other people's supplied parts almost as much as I hate buying something someone else modified. Because now you have to figure out why the thing doesn;t work and it may very well be the kit that was supplied, which puts you in the middle of the customer and the supplier, both of which are going to point at you. 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.

Re: All new brakes, low and hard pedal [Re: Supercuda] #1568425 01/25/14 06:51 PM 01/25/14 06:51 PM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	Exactly - luckily the customer came by today and he actually said it is probably the booster/master that he bought. He got it from eBay and it was some sort of universal deal. I wonder why people do that when they can just go to the auto parts store and order the right thing the first time. I checked and both Car Quest and Advance Auto Parts have the correct booster/master available from Cardone.

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568426 01/26/14 04:44 AM 01/26/14 04:44 AM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	The small booster & Corvette M/C combe seems to be a staple of the aftermarket retrofit brake industry. I was given an 1 1/32" bore Corvette M/C from a guy that ordered a rear disc kit from Master Power brakes. It sucked for non power use due to the large bore.

Re: All new brakes, low and hard pedal [Re: Kern Dog] #1568427 01/26/14 05:12 AM 01/26/14 05:12 AM
Joined: Sep 2005 Posts: 6,516 Santa Cruz, California L Lefty master
Lefty master L Joined: Sep 2005 Posts: 6,516 Santa Cruz, California	With the engine off, pump the brake pedal 10 times. Push on the brake pedal and start the engine - You should feel the pedal drop under your foot. If not the booster/vacuum source is bad or the MC to Booster interface has a problem.

Re: All new brakes, low and hard pedal [Re: Lefty] #1568428 01/26/14 05:40 PM 01/26/14 05:40 PM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	Quote: With the engine off, pump the brake pedal 10 times. Push on the brake pedal and start the engine - You should feel the pedal drop under your foot. If not the booster/vacuum source is bad or the MC to Booster interface has a problem. It drops a little. The main thing seems to be there is not enough travel in the pedal.

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568429 01/27/14 01:37 PM 01/27/14 01:37 PM
Joined: Oct 2007 Posts: 3,895 Oregon hooziewhatsit master
hooziewhatsit master Joined: Oct 2007 Posts: 3,895 Oregon	Can you see any daylight between any of the pads and rotors? If there is, that could be taking up most of your stroke. If you ever find yourself in a fair fight, your tactics suck.

Re: All new brakes, low and hard pedal [Re: hooziewhatsit] #1568430 01/28/14 01:23 PM 01/28/14 01:23 PM
Joined: Jan 2003 Posts: 738 Oh Canada E EV2CUDA super stock
EV2CUDA super stock E Joined: Jan 2003 Posts: 738 Oh Canada	Push rod in booster too short or linkage at brake pedal too short? 71 Barracuda 383 4spd (500ci) 69 camaro 598, NOS 69 barracuda bbc procharger 77 t/a 6.0 turbo project 78 t/a 400 77 corvette 1983 hurst/olds 03 Viper 79 360 macho 71 demon 360 78 Warlock 5.7 hemi project

Re: All new brakes, low and hard pedal [Re: EV2CUDA] #1568431 01/31/14 01:44 PM 01/31/14 01:44 PM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	Did a bunch of linkage adjusting and also adjusted out the booster push rod - much better, pedal no longer hard but still does not seem right.

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568432 02/03/14 12:20 PM 02/03/14 12:20 PM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	Well took it for a ride around the block and i am still not happy. The rear brakes seem to lock up first and pedal is still low. WTH!

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568433 02/04/14 12:28 AM 02/04/14 12:28 AM
Joined: Jan 2007 Posts: 780 Woodinville, WA Viol8r super stock
Viol8r super stock Joined: Jan 2007 Posts: 780 Woodinville, WA	Assuming the lines are correct coming out of the master!? 1968 Pro-Touring Dodge Charger *2011 Optima Ultimate Street Car Challenge Invitee http://www.popularhotrodding.com/features/1203phr_1968_dodge_charger/index.html

Re: All new brakes, low and hard pedal [Re: ChallengerGary] #1568434 02/04/14 02:00 AM 02/04/14 02:00 AM
Joined: Nov 2008 Posts: 1,491 Lethbridge, AB, Canada dangina pro stock
dangina pro stock Joined: Nov 2008 Posts: 1,491 Lethbridge, AB, Canada	do you have an adjustable valve on the rear line to adjust the rear brakes from overpowering the fronts? Last edited by dangina; 02/04/14 02:01 AM.

Re: All new brakes, low and hard pedal [Re: Viol8r] #1568435 02/04/14 11:09 AM 02/04/14 11:09 AM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	Quote: Assuming the lines are correct coming out of the master!? yes, they are. Checked twice and then checked it again

Re: All new brakes, low and hard pedal [Re: dangina] #1568436 02/04/14 11:10 AM 02/04/14 11:10 AM
Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL ChallengerGary OP top fuel
ChallengerGary OP top fuel Joined: Aug 2003 Posts: 2,143 Port Saint Lucie, FL	Quote: do you have an adjustable valve on the rear line to adjust the rear brakes from overpowering the fronts? Not yet. Guess that is the next step...

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