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round 0 rings for wilwoods #1325886 10/25/12 12:18 PM 10/25/12 12:18 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks OP master
deaks OP master Joined: May 2004 Posts: 3,210 robin hood country	I've just put fresh 0 rings in some wilwoods i've just fitted, cleaned all the pistons up and brake cleaned the bores as well but they are still dragging some. I found a thread on classracer.com and they suggested using round seals, instead of the square one from wilwood. Has anyone had a similar problem and these seals cured it and where did you get the seals from ? Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: round 0 rings for wilwoods [Re: deaks] #1325887 10/25/12 12:50 PM 10/25/12 12:50 PM
Joined: Jul 2004 Posts: 19,318 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,318 State of confusion	I`m interested also as mine drag too and if I can`t fix em then the`re gone and onto something better........... 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: round 0 rings for wilwoods [Re: deaks] #1325888 10/25/12 01:19 PM 10/25/12 01:19 PM
Joined: Jan 2008 Posts: 1,213 Minn S SportF pro stock
SportF pro stock S Joined: Jan 2008 Posts: 1,213 Minn	I believe the square seals retract the piston after pressure release, the round ones won't. I believe it was some Ford engineer that figured that out years ago and that's when they came to be. But, I could be wrong, but the square seal design seems to make sense in that respect. 7434738-indy.jpg (62 downloads)

Re: round 0 rings for wilwoods [Re: SportF] #1325889 10/25/12 01:42 PM 10/25/12 01:42 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: I believe the square seals retract the piston after pressure release, the round ones won't. I believe it was some Ford engineer that figured that out years ago and that's when they came to be. But, I could be wrong, but the square seal design seems to make sense in that respect. Square is the way to go. With pressure they actually deform in their grooves and when the pressure is released, they conform to their original shap, pulling the piston back a few thou. Fastest 300

Re: round 0 rings for wilwoods [Re: Crizila] #1325890 10/25/12 02:05 PM 10/25/12 02:05 PM
Joined: Jul 2004 Posts: 19,318 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,318 State of confusion	I suppose I can call Wilwood for these or is there another source.......... 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: round 0 rings for wilwoods [Re: Thumperdart] #1325891 10/25/12 02:53 PM 10/25/12 02:53 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks OP master
deaks OP master Joined: May 2004 Posts: 3,210 robin hood country	It must be me then.. The pistons had no marks on them and the seals are new, as are the braided lines from summit. Master cylinder is newer one same as alloy one but the steel version. So i'm all out of ideas. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: round 0 rings for wilwoods [Re: deaks] #1325892 10/25/12 03:08 PM 10/25/12 03:08 PM
Joined: Jul 2004 Posts: 19,318 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,318 State of confusion	Most of what I`ve read about Wilwoods is that they drag more than others but there was a post a while back about a "trick" using a spring to back em off of the rotor when pedal is released............ 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: round 0 rings for wilwoods [Re: deaks] #1325893 10/25/12 05:27 PM 10/25/12 05:27 PM
Joined: May 2008 Posts: 902 Mopar Lane,Mississippi 6 67HEMI super stock
67HEMI super stock 6 Joined: May 2008 Posts: 902 Mopar Lane,Mississippi	I thought it was the round ones that "fixed" it. I know I have wilwoods front and rear with their master cylinder and mine drag. If I ever get my motor back I have thought about trying something similar to the stainless wishbone return springs like on ford truck discs. '33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction) '69 Chrysler 300 Convertible 375 HP 440 '71 Plymouth Duster 360 W/EFI (Wife's Ride) '12 Ram MegaCab Dually 6.7 Cummins

Re: round 0 rings for wilwoods [Re: deaks] #1325894 10/25/12 05:35 PM 10/25/12 05:35 PM
Joined: Oct 2010 Posts: 2,408 Ambridge, Pa. R rickraw top fuel
rickraw top fuel R Joined: Oct 2010 Posts: 2,408 Ambridge, Pa.	mine were dragging also when i changed seals. don't remember if they were round or square. i polished the pistons on a compound wheel till the little fine lines were gone. no more drag after that.

Re: round 0 rings for wilwoods [Re: 67HEMI] #1325895 10/25/12 05:35 PM 10/25/12 05:35 PM
Joined: Jul 2004 Posts: 19,318 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,318 State of confusion	Quote: I thought it was the round ones that "fixed" it. I know I have wilwoods front and rear with their master cylinder and mine drag. If I ever get my motor back I have thought about trying something similar to the stainless wishbone return springs like on ford truck discs. What`s the story on this spring stuff? 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: round 0 rings for wilwoods [Re: Thumperdart] #1325896 10/25/12 07:16 PM 10/25/12 07:16 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks OP master
deaks OP master Joined: May 2004 Posts: 3,210 robin hood country	Maybe i should have done that, i used a scotchbrite pad, i didn't think those very faint lines would be a problem. I'm taking the car out this weekend, so i'll leave it for now, i'll probably pull them apart over winter and see what can be done. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: round 0 rings for wilwoods [Re: Thumperdart] #1325897 10/25/12 07:17 PM 10/25/12 07:17 PM
Joined: May 2008 Posts: 902 Mopar Lane,Mississippi 6 67HEMI super stock
67HEMI super stock 6 Joined: May 2008 Posts: 902 Mopar Lane,Mississippi	In the bottom right corner are the wishbone springs. The pads have a small hole drilled in the top edge of the brake pad backing plate at each end. After you put the pads in the caliper bracket you squeeze these springs together and stick the ends in the holes. Then the caliper piston housing sits on top of them and they keep tension outward on the pads.Only problem on wilwoods is there is nothing to keep the spring from coming out of the holes...but I am still working on that idea! '33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction) '69 Chrysler 300 Convertible 375 HP 440 '71 Plymouth Duster 360 W/EFI (Wife's Ride) '12 Ram MegaCab Dually 6.7 Cummins

Re: round 0 rings for wilwoods [Re: 67HEMI] #1325898 10/25/12 07:49 PM 10/25/12 07:49 PM
Joined: Oct 2010 Posts: 2,408 Ambridge, Pa. R rickraw top fuel
rickraw top fuel R Joined: Oct 2010 Posts: 2,408 Ambridge, Pa.	i'd say the problem is the pistons. mine had fine (record like lines) on the pistons. after i polished those away, brakes work fine. a friend of mine had same problem with his front wilwoods, i buffed them & no more drag.

Re: round 0 rings for wilwoods [Re: rickraw] #1325899 10/25/12 08:28 PM 10/25/12 08:28 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks OP master
deaks OP master Joined: May 2004 Posts: 3,210 robin hood country	Did you buff them with compound Rick ? Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: round 0 rings for wilwoods [Re: deaks] #1325900 10/25/12 08:40 PM 10/25/12 08:40 PM
Joined: Oct 2010 Posts: 2,408 Ambridge, Pa. R rickraw top fuel
rickraw top fuel R Joined: Oct 2010 Posts: 2,408 Ambridge, Pa.	yes. i used a 3/4" compound wheel with stainless rouge. had the pistons lookin like chrome & smooth.

Re: round 0 rings for wilwoods [Re: deaks] #1325901 10/26/12 10:22 AM 10/26/12 10:22 AM
Joined: Mar 2003 Posts: 2,513 PA moparacer master
moparacer master Joined: Mar 2003 Posts: 2,513 PA	Quote: I've just put fresh 0 rings in some wilwoods i've just fitted, cleaned all the pistons up and brake cleaned the bores as well but they are still dragging some. I found a thread on classracer.com and they suggested using round seals, instead of the square one from wilwood. Has anyone had a similar problem and these seals cured it and where did you get the seals from ? Mick Yep I have always replaced the square seals with round ones. I get them from summit. Did you replace the pads when you rebuilt the calipers? If the pads are worn crooked you cant use them. They will cock the pistons in the bore and make them hang up again. Also you cant let the brake pads wear down to the point the pistons push too far out of the bores and get crooked, and hang up. I have dynalites and a spare set of them in the garage if you need the part numbers. For the seals. 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174

Re: round 0 rings for wilwoods [Re: moparacer] #1325902 10/26/12 11:21 AM 10/26/12 11:21 AM
Joined: Jul 2004 Posts: 19,318 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,318 State of confusion	Is Summit the only place to get o-rings and pads? My ft. pads sure look similar to some of the import pads I`ve installed on some cars over the years............ 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: round 0 rings for wilwoods [Re: Thumperdart] #1325903 10/26/12 02:20 PM 10/26/12 02:20 PM
Joined: Mar 2003 Posts: 2,513 PA moparacer master
moparacer master Joined: Mar 2003 Posts: 2,513 PA	Guys I use part number WIL-130-0047 for the dynalites and Summit stocks them. 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174

Re: round 0 rings for wilwoods [Re: moparacer] #1325904 10/26/12 02:29 PM 10/26/12 02:29 PM
Joined: Jul 2004 Posts: 19,318 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,318 State of confusion	I assume that`s the pads what about the 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: round 0 rings for wilwoods [Re: Thumperdart] #1325905 10/26/12 02:58 PM 10/26/12 02:58 PM
Joined: Mar 2003 Posts: 2,513 PA moparacer master
moparacer master Joined: Mar 2003 Posts: 2,513 PA	Quote: I assume that`s the pads what about the o-rings........... ? Thats the O rings.... http://www.summitracing.com/parts/WIL-130-0047/ I run Hawk pads on my car.

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