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Re: Front wheels don't turn ! [Re: gtsdude] #1769362 03/03/15 12:11 PM 03/03/15 12:11 PM
Joined: May 2014 Posts: 108 Socal L littleVAL member
littleVAL member L Joined: May 2014 Posts: 108 Socal	I forget what the hole is called in the master cylinder but if your pushrod is to long it will not let the pressure bleed back through the hole. So your brakes will just lock up harder (pump up) every time you push on them

Re: Front wheels don't turn ! [Re: Wedgeman] #1769363 03/03/15 12:30 PM 03/03/15 12:30 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: I just tried loosening the bleeder screws and turn the tires.....the pads are still sticking to the rotor and making it hard to turn by hand..... If you have the bleeder screws loose and the brakes are still dragging, the problem is in the calipers. Forget everything else for now ( not a hydraulic problem )and go directly to the calipers. Pistons are not retracting ( worn square cut "O" rings or corrosion in the piston bores / pistons. Other issue could be calipers not sliding on the pins or on the sliders - again, corrosion. Fastest 300

Re: Front wheels don't turn ! [Re: littleVAL] #1769364 03/03/15 12:33 PM 03/03/15 12:33 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: I forget what the hole is called in the master cylinder but if your pushrod is to long it will not let the pressure bleed back through the hole. So your brakes will just lock up harder (pump up) every time you push on them Compensating port. Not his problem if the brakes still drag after he opens the bleeder screws. I think he said he has pushrod clearance. Fastest 300

Re: Front wheels don't turn ! [Re: Crizila] #1769365 03/03/15 12:39 PM 03/03/15 12:39 PM
Joined: Mar 2004 Posts: 826 Georgia 66coronet super stock
66coronet super stock Joined: Mar 2004 Posts: 826 Georgia	How long has the car been sitting? We have high humidity and this happens every winter to our cars. Drive it around and drag the brakes and see if the corrosion/surface rust grinds off and they free up.

Re: Front wheels don't turn ! [Re: 66coronet] #1769366 03/03/15 12:46 PM 03/03/15 12:46 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: How long has the car been sitting? We have high humidity and this happens every winter to our cars. Drive it around and drag the brakes and see if the corrosion/surface rust grinds off and they free up. - is that like a hillbilly tune up? " hold the gas peddle on the floor and what ever is holding it back will break loose and blow out". Fastest 300

Re: Front wheels don't turn ! [Re: Crizila] #1769367 03/03/15 12:49 PM 03/03/15 12:49 PM
Joined: Mar 2004 Posts: 826 Georgia 66coronet super stock
66coronet super stock Joined: Mar 2004 Posts: 826 Georgia	Drag the brake to eat the surface rust off while driving through the pits. Not hold the brake. Big difference.

Re: Front wheels don't turn ! [Re: 66coronet] #1769368 03/03/15 01:52 PM 03/03/15 01:52 PM
Joined: Feb 2014 Posts: 655 Huntsville, AL A Airwoofer mopar
Airwoofer mopar A Joined: Feb 2014 Posts: 655 Huntsville, AL	I was noticing some surface rust on my disk rotors last weekend. Tis the season...

Re: Front wheels don't turn ! [Re: Airwoofer] #1769369 03/03/15 02:16 PM 03/03/15 02:16 PM
Joined: Feb 2005 Posts: 20,174 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,174 PA.	I think once again some of us are making a mountain out of a mole hole. The poster is from Canada and it is February. All disk brakes have some drag especially after that cold wheel bearing grease and Winter rust sets in. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Front wheels don't turn ! [Re: pittsburghracer] #1769370 03/03/15 03:51 PM 03/03/15 03:51 PM
Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada W Wedgeman OP pro stock
Wedgeman OP pro stock W Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada	The car is in a heated garage, even in the summer it has that effect...... Like stated before I installed calipers and all other related components new....it's been doing that ever since but never corrected the problem Again, like I said before the car is always a dog to push in the pits... Dan

Re: Front wheels don't turn ! [Re: Wedgeman] #1769371 03/03/15 04:03 PM 03/03/15 04:03 PM
Joined: Jul 2010 Posts: 2,422 Pittsburgh PA Eric top fuel
Eric top fuel Joined: Jul 2010 Posts: 2,422 Pittsburgh PA	Do you have residual valves? 5.53 @ 125 1/8th on the launch control..more left in her!

Re: Front wheels don't turn ! [Re: Eric] #1769372 03/03/15 05:04 PM 03/03/15 05:04 PM
Joined: Apr 2005 Posts: 2,128 Salt Lake City C camastomcat top fuel
camastomcat top fuel C Joined: Apr 2005 Posts: 2,128 Salt Lake City	Did you convert from drum brakes? I remember from long ago that a drum brake master cyl. won't work on a disc set up?

Re: Front wheels don't turn ! [Re: camastomcat] #1769373 03/03/15 06:00 PM 03/03/15 06:00 PM
Joined: Mar 2009 Posts: 1,058 bigfork mn D dragram440 super stock
dragram440 super stock D Joined: Mar 2009 Posts: 1,058 bigfork mn	My car has done this same thing since I converted it to front disc. I used front disc setup off of a 80's diplomat. Spindles, rotors, calipers, and a master cyl from a 90's dodge ram truck I believe. The fronts just dont turn free when its jacked up. I dont think it is hurting my E.T.'s but I could be wrong. 67' charger 499 RB 10.57 at 127

Re: Front wheels don't turn ! [Re: dragram440] #1769374 03/03/15 06:26 PM 03/03/15 06:26 PM
Joined: Apr 2005 Posts: 2,128 Salt Lake City C camastomcat top fuel
camastomcat top fuel C Joined: Apr 2005 Posts: 2,128 Salt Lake City	Quote: My car has done this same thing since I converted it to front disc. I used front disc setup off of a 80's diplomat. Spindles, rotors, calipers, and a master cyl from a 90's dodge ram truck I believe. The fronts just dont turn free when its jacked up. I dont think it is hurting my E.T.'s but I could be wrong. If it's a front drum brake master, that may be the problem. And if there is enough resistance, and they grab or one does, think of the possibilities.

Re: Front wheels don't turn ! [Re: dragram440] #1769375 03/03/15 06:44 PM 03/03/15 06:44 PM
Joined: Feb 2003 Posts: 1,142 Tucson, AZ C cruzin super stock
cruzin super stock C Joined: Feb 2003 Posts: 1,142 Tucson, AZ	Have you tried just removing the caliper completly and turning the rotor? If not, just pop it off and if you find the rotor difficult to spin, most likely you have overtighten the spindle nut and that's the source of the added drag. If the rotor spins freely w/o the caliper you may try the attached tech tip which adds a spring to move the pads away from the rotor. Here's the link found in the archive. http://www.moparts.org/Tech/Archive/brake/13.html

Re: Front wheels don't turn ! [Re: camastomcat] #1769376 03/03/15 07:17 PM 03/03/15 07:17 PM
Joined: Mar 2009 Posts: 1,058 bigfork mn D dragram440 super stock
dragram440 super stock D Joined: Mar 2009 Posts: 1,058 bigfork mn	Quote: Quote: My car has done this same thing since I converted it to front disc. I used front disc setup off of a 80's diplomat. Spindles, rotors, calipers, and a master cyl from a 90's dodge ram truck I believe. The fronts just dont turn free when its jacked up. I dont think it is hurting my E.T.'s but I could be wrong. If it's a front drum brake master, that may be the problem. And if there is enough resistance, and they grab or one does, think of the possibilities. It is a aluminum master off a 94 Ram with disc brakes. It is certainly drag from the pads. I hope no one has wheel bearings that tight or you are gonna have some major issues. I dont think you could get anything in the 90's with drum brakes! The master cyl. rod is correct length and not pushing the piston on the master. 67' charger 499 RB 10.57 at 127

Re: Front wheels don't turn ! [Re: dragram440] #1769377 03/03/15 08:30 PM 03/03/15 08:30 PM
Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada W Wedgeman OP pro stock
Wedgeman OP pro stock W Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada	Yes it is converted from drum brakes... I swapped to a disc brake MC, prop valve, and new parts all around, I left nothing on the table here.... Hoses bleed freely....non kinks... Dan

Re: Front wheels don't turn ! [Re: Wedgeman] #1769378 03/03/15 09:13 PM 03/03/15 09:13 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Yes it is converted from drum brakes... I swapped to a disc brake MC, prop valve, and new parts all around, I left nothing on the table here.... Hoses bleed freely....non kinks... Dan In this statement you say there seems like a small pressure... IF I read it right Quote: After inspections, I let off the bleeders again and it seems like it is always pushing the piston in the caliper, like a constant small pressure... The brale pedal has lots of freedom to retract... Dan Is that what your saying ... is there pressure there or is it in the caliper (not rolling back)

Re: Front wheels don't turn ! [Re: MR_P_BODY] #1769379 03/03/15 11:46 PM 03/03/15 11:46 PM
Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada W Wedgeman OP pro stock
Wedgeman OP pro stock W Joined: May 2004 Posts: 1,522 Ste-Sophie, Quebec, Canada	Yes even with the bleeder unscrewed, the piston still pushes on the rotor...making it hard to turn

Re: Front wheels don't turn ! [Re: Wedgeman] #1769380 03/03/15 11:57 PM 03/03/15 11:57 PM
Joined: Dec 2012 Posts: 1,823 Wind Gap,Pa. S Sammy top fuel
Sammy top fuel S Joined: Dec 2012 Posts: 1,823 Wind Gap,Pa.	Pull the brake pads out and see if that's really the problem.

Re: Front wheels don't turn ! [Re: Wedgeman] #1769381 03/04/15 12:32 AM 03/04/15 12:32 AM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: Yes even with the bleeder unscrewed, the piston still pushes on the rotor...making it hard to turn Piston is not pushing on the rotor, it is just not retracting enough. Dirt, rust, misalignment, damaged pistons(chatter marks), etc. There should be some "slight" drag to keep foreign material from getting in between the rotors and pads. You should be able to spin the tire by hand and get at least 1.5 tire rotations out of it. Time to tear it down and find the problem - before this thread turns in to a real drag. Fastest 300

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