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Re: Wilwood front Brake Drag? [Re: Leigh] #1011650
06/12/11 02:51 PM 06/12/11 02:51 PM
Joined: Jan 2003
Posts: 32,394
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Quicktree Offline
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Quote:

Shook my front teeth out. I expected them to have tighter tolerances than the $19 O'Reilly rotors.

did you call them? mine has never been bad enough to feel.
Re: Wilwood front Brake Drag? [Re: Leigh] #1011651
06/12/11 02:54 PM 06/12/11 02:54 PM
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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dusturbd340W5 Offline
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Quote:

Quote:

keep in mind after the brakes have been applied it takes quite a few revolutions for the runout in the rotor to push the pads away from it. I think wilwood says like 10mph



Oh, don't worry, you'll have plenty of runout with Wiljunk rotors. Mine were .012 NEW.



yeah that is WAY to much runout my Aerospace new where less than .003

70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: Wilwood front Brake Drag? [Re: Quicktree] #1011652
06/12/11 03:00 PM 06/12/11 03:00 PM
Joined: Jan 2003
Posts: 5,989
Anoka County, MN
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Leigh Offline
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Anoka County, MN
Quote:

Quote:

Shook my front teeth out. I expected them to have tighter tolerances than the $19 O'Reilly rotors.

did you call them? mine has never been bad enough to feel.



Oh yeah. The "tech" guy told me that they were stored "on end, that's why." He also told me the minimun spec was "as close as you feel comfortable with." There's some brilliance.
Re: Wilwood front Brake Drag? [Re: Leigh] #1011653
06/12/11 03:04 PM 06/12/11 03:04 PM
Joined: Jan 2003
Posts: 5,989
Anoka County, MN
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Leigh Offline
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Hey Dustin71. Sorry to s h i t on your thread. Let us know what you find. Take care, Leigh.

Re: Wilwood front Brake Drag? [Re: dusturbd340W5] #1011654
06/12/11 03:05 PM 06/12/11 03:05 PM
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they say you can shim between the hat and rotor to correct run out. another thing with the caliper not releasing could be the M/C has internal residual pressure.
Re: Wilwood front Brake Drag? [Re: Quicktree] #1011655
06/12/11 03:08 PM 06/12/11 03:08 PM
Joined: Jul 2010
Posts: 197
New York
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Dustin71 Offline OP
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New York
Quote:

keep in mind after the brakes have been applied it takes quite a few revolutions for the runout in the rotor to push the pads away from it. I think wilwood says like 10mph

Don't quite understand. The runout meaning the disc comes warped new?
and the wobble in the disc returns the piston back off the disc?
Then it will drag all the time i quess?
Re: Wilwood front Brake Drag? [Re: Dustin71] #1011656
06/12/11 03:12 PM 06/12/11 03:12 PM
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Quote:

Quote:

keep in mind after the brakes have been applied it takes quite a few revolutions for the runout in the rotor to push the pads away from it. I think wilwood says like 10mph

Don't quite understand. The runout meaning the disc comes warped new?
and the wobble in the disc returns the piston back off the disc?
Then it will drag all the time i quess?

thats exactly how it works, you apply the brakes they close and the run out pushes them off the rotor. but it should not be as much as Leigh had. you shouldn't be able to feel it. you need to figure out what M/C you have. you could have one with built in residual pressure.
Re: Wilwood front Brake Drag? [Re: Quicktree] #1011657
06/12/11 03:16 PM 06/12/11 03:16 PM
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no it doesn't drag all the time.as soon as the wheel starts turning it pushes the pad back.
Re: Wilwood front Brake Drag? [Re: Dustin71] #1011658
06/12/11 03:17 PM 06/12/11 03:17 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
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Jacksonville, FL
I have Wilwoods on the front of my 71 Demon.As mentioned,you have to make sure the calipers are centered over the rotor.I spent a lot of time doing this along with adjusting the wheel bearings to make sure everything spun freely.My Wilwoods have worked excellent,and no pulse or anything wrong.They work great.

Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: Wilwood front Brake Drag? [Re: Leigh] #1011659
06/12/11 04:19 PM 06/12/11 04:19 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Romeo MI
I've never had any problems with my race slotted rotors
Re: Wilwood front Brake Drag? [Re: MR_P_BODY] #1011660
06/12/11 04:36 PM 06/12/11 04:36 PM
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Quote:

I've never had any problems with my race slotted rotors


I have owned 4 different sets and never had a minutes problem. and worked on a bunch more over the years.

Re: Wilwood front Brake Drag? [Re: Quicktree] #1011661
06/12/11 05:46 PM 06/12/11 05:46 PM
Joined: Aug 2003
Posts: 1,416
Lake Charles,Louisiana
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BILLYJAY Offline
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Lake Charles,Louisiana
i spent over a week fixing mine on my dart.. had the same issues..as much as these items cost us poor guys they should be a little beter.. maybe the QC guy was sleeping that day...

Re: Wilwood front Brake Drag? [Re: BILLYJAY] #1011662
06/12/11 06:07 PM 06/12/11 06:07 PM
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Dustin did you figure anything out?
Re: Wilwood front Brake Drag? [Re: Quicktree] #1011663
06/12/11 07:38 PM 06/12/11 07:38 PM
Joined: Mar 2003
Posts: 2,504
PA
moparacer Offline
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PA
Well, I have only posted this about 20 times in the last year or so but my wilwoods were dragging bad and I rebuilt the calipers with the ROUND o-rings and they have been drag free ever since.

If I bought a new set of wilwoods the first hing I would do is buy the round Orings and replace the flat ones that are in them.

Quote:

The wilwood pads are very abrasive new,and making a dragging sound till you get them bedded good.



I also switched to the HAWK pads this week and cant belive how much better my car stops with them.

I was using the Wilwood E rated pads before and they were killing my rotors.

Hawk pads stop the car with half the pedal pressure.


67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
Re: Wilwood front Brake Drag? [Re: moparacer] #1011664
06/12/11 08:13 PM 06/12/11 08:13 PM
Joined: Jun 2009
Posts: 644
Minnesota
Barnstorm Offline
mopar
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Posts: 644
Minnesota
Moparacer is right. When I replaced my square o rings it took 160 psi of air to pop the pistons out..replaced with round and only 15 psi. I also put a compression spring between the calipers over the cotter pin to ensure complete retraction. But make sure there is no residual pressure in the system.

The little old lady from Pasadena is back!
Re: Wilwood front Brake Drag? [Re: Dustin71] #1011665
06/12/11 10:25 PM 06/12/11 10:25 PM
Joined: Oct 2010
Posts: 2,407
Ambridge, Pa.
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rickraw Offline
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Ambridge, Pa.
hey, i had the same drag on my wilwoods. new pads & pistons. i polished the pistons on a compound wheel till they looked like chrome. pistons had super fine machine lines on them. after the polishing, no drag, all was good. stay safe, seeya, Rick.
Re: Wilwood front Brake Drag? [Re: Barnstorm] #1011666
06/12/11 10:30 PM 06/12/11 10:30 PM
Joined: Jul 2004
Posts: 19,317
State of confusion
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Thumperdart Offline
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State of confusion
Where does one get these o-rings?

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: Wilwood front Brake Drag? [Re: Thumperdart] #1011667
06/12/11 10:41 PM 06/12/11 10:41 PM
Joined: Jun 2009
Posts: 644
Minnesota
Barnstorm Offline
mopar
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Posts: 644
Minnesota
Got mine from Wilwood. Told me I was nuts to put a round peg in a square hole.

The little old lady from Pasadena is back!
Re: Wilwood front Brake Drag? [Re: Barnstorm] #1011668
06/12/11 11:00 PM 06/12/11 11:00 PM
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4 Offline
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Posts: 6,257
gulfport, ms, west mi
Quote:

Got mine from Wilwood. Told me I was nuts to put a round peg in a square hole.




They might be right, Quad rings, [ the square ones ] I believe the groove has different tolerance than the standard o-ring. The quad ring is made to hold more pressure. Hope your little experiment doesn't cause a accident.


it's ok to butt heads, just don't do it with a butthead
Re: Wilwood front Brake Drag? [Re: rowin4] #1011669
06/13/11 05:16 PM 06/13/11 05:16 PM
Joined: Jul 2010
Posts: 197
New York
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Dustin71 Offline OP
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New York
Allright guys.... When I put it all together , that's when I noticed that it had a drag...
I pumped the brakes a few times and when I went to turn the wheel it had big drag....
Then the next day I check everything again to make sure I installed it corectly...
Everything was installed corect.... So I went and drove it for about a hour ...
Came back raised the car turned the tire and the drag was still there but less...
That whole week I drove it to work and drove it back home....
(didn't check it after that) till yesterday that I posted the problem with the dragging...
BUT, I did go down yesterday to try a few of the thing you guys told me to try but when I rolled the car out the garage, it rolled out easy...
So I raised the car and turned the tire and it rolled like it had very little drag...

I pressed the brake peddle and checked the tire roll and it was much better spinnning....
So, like you guys was saying about seating the pads may have did it...today when I get out of work I will Drive the car again and recheck for the drag and see if it is getting less. Thanks to all that help with my Drag problem.... Will post the outcome tonight on that note.... Thanks again Mopar Doctors ...
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