Brake drag need help

I hope someone can help me with this. I have brake drag on the front rotors of my 71 Torino Cobra. Its not alot but its there. I have about .002/.003 runout on the front rotors.These are the original type calipers. I know they are scrubbing some of speed. Does anyone know how the Super Stock guys eliminate this problem? Everything is new in the system.

Tore

Are the pads dragging? If so, I had that problem and took a little off each pad and it fixed the problem. I know that is simple and you may have a more difficult problem but it helped mine.

Thickness wise? I have sanded them down some already.


Tore

The Rotors on older cars like that weren't machined with the same tolerances as stuff today. Also, long term use can be a little wearing on them. You can take them and turn the Rotors down a little bit and most likely be fine.

I just did last week. Both sides. Cale do you know what the guys running Stock do in this case. I can see where I can put some springs on the brake mechanism to spread the calipers but I dont want to get into that right now no time. Thanks Tore

I really don't know what those guys do. I haven't spent too much time in that department so to speak. Rather interesting question though.

This car and other Ford cars I have had, have had some type of drag on the front. I have to believe that some of the guys running in Stock Class have come up with some way to eliminate it.

Tore

Tore. I have Wilwood brakes on Tweety, and they have some drag also. The ole Mav. had drums and they were free as a bird.:confused:

I am just trying to see if anyone else has eliminated the slight drag. I figure I have to step up the program now that Damon, Little Chuck and You will be racing at Labor Day at National Trails. LOL


Tore

That's one of the draw backs of disc brakes. There is no springs to pull the pads away from the rotors. Drums have the springs pull the shoes back. Disc systems are setup with a little residual press that holds the pads in contact with the rotors. The drag is very mininual compared to the stopping ability of discs. You might also check to see if there's some dirt ridge in the caliber/piston holding it out too. Does the wheel turn by hand when of the ground.

How bad is it really Tore? How much work for what you would really gain overall, maybe a few thou, or a .010 of 1 mph? I wouldn't worry about it to much, your car runs awesome as it is!

How bad is it really Tore? How much work for what you would really gain overall, maybe a few thou, or a .010 of 1 mph? I wouldn't worry about it to much, your car runs awesome as it is!
Maverick is right Tore, You would probably never see the diff. Now if was a S/S or S /elem. every little bit counts.DWA ole Bud:)

Its not alot but I would like to eliminate it all together. I see I can can do some simple machine work this winter and put in some light wt. die springs to spread the calipers back.
I appreciate everybodys reply.

A70Maverick your old car looks mean. Just got it back from the body shop I will send some pictures.

Tore



Maverick is right Tore, You would probably never see the diff. Now if was a S/S or S /elem. every little bit counts.DWA ole Bud:)

Its not alot but I would like to eliminate it all together. I see I can can do some simple machine work this winter and put in some light wt. die springs to spread the calipers back.
I appreciate everybodys reply.

A70Maverick your old car looks mean. Just got it back from the body shop I will send some pictures.

Tore
Tore, Are you sure the spring deal will work?

quick take up master cylinder off a newer taurus?? they have a different style o-ring that allows more travel of the piston... may not even fit, just a thought

Well,
What we did before is to run the wheel bearing just a little looser than normal.

That way when you go down the track the rotor pushed the piston back just a little

How much just one click back was what we did.

Thats what I have done


Well,
What we did before is to run the wheel bearing just a little looser than normal.

That way when you go down the track the rotor pushed the piston back just a little

How much just one click back was what we did.