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round 0 rings for wilwoods
#1325886
10/25/12 12:18 PM
10/25/12 12:18 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
OP
master
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OP
master
Joined: May 2004
Posts: 3,210
robin hood country
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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
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Re: round 0 rings for wilwoods
[Re: Thumperdart]
#1325891
10/25/12 02:53 PM
10/25/12 02:53 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
OP
master
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OP
master
Joined: May 2004
Posts: 3,210
robin hood country
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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
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Re: round 0 rings for wilwoods
[Re: deaks]
#1325893
10/25/12 05:27 PM
10/25/12 05:27 PM
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Joined: May 2008
Posts: 902
Mopar Lane,Mississippi
67HEMI
super stock
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super stock
Joined: May 2008
Posts: 902
Mopar Lane,Mississippi
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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
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Re: round 0 rings for wilwoods
[Re: Thumperdart]
#1325896
10/25/12 07:16 PM
10/25/12 07:16 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
OP
master
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OP
master
Joined: May 2004
Posts: 3,210
robin hood country
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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
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Re: round 0 rings for wilwoods
[Re: rickraw]
#1325899
10/25/12 08:28 PM
10/25/12 08:28 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
OP
master
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OP
master
Joined: May 2004
Posts: 3,210
robin hood country
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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
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Re: round 0 rings for wilwoods
[Re: Thumperdart]
#1325907
10/26/12 04:00 PM
10/26/12 04:00 PM
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Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,471
So Cal
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We've run round O-rings in our calipers for years on our circle track car for same purpose.
If you need info, call Jeff Phillips at Willwood. He's a Mopar guy too. And used to help with our circle track car.
Next step for getting rid of rolling resistance is not using wheel bearing grease. We've filled the sealed grease cavity with straight Justice Brothers Heavy Duty Vehicle extreme pressure additive. You had to drill a pin hole in the middle of dust cap to let air out. And the rest of cap must be sealed.
The Justice Brothers Heavy Duty Vehicle additive (p/n#: HDV/23p) is about a thin as trans fluid. Maybe thinner.
You do this on all four wheels and you WILL feel the difference just pushing the car around in the pits.
Doing it in rear with a floater read end is much easier. If you like, you can have your wheel bearing coated for longevity and peace of mind. Necessary on a high speed banked oval car.
Last edited by autoxcuda; 10/26/12 05:17 PM.
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Re: round 0 rings for wilwoods
[Re: Crizila]
#1325910
10/26/12 07:07 PM
10/26/12 07:07 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
OP
master
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OP
master
Joined: May 2004
Posts: 3,210
robin hood country
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I've put new square ones in, master cylinder is fine, i've had that off as well. I've centred the calipers a little better today and that has improved them. The next thing i'm going to do, is polish them like Rick as done.
I was out tomorrow but i'm not bothering now, so i'll do this amongst some other mods over xmas.
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
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Re: round 0 rings for wilwoods
[Re: deaks]
#1325911
10/26/12 09:07 PM
10/26/12 09:07 PM
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Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581
master
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master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
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I have Wilwoods on the front of my Demon.I took a LOT of time to make sure the calipers were centered over the rotors.My Wilwoods do not drag.I also spent a lot of time with the wheel bearing adjustment to make sure they spun freely,although I use grease in the bearings.
Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
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Re: round 0 rings for wilwoods
[Re: Thumperdart]
#1325913
10/27/12 01:21 AM
10/27/12 01:21 AM
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Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,471
So Cal
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Quote:
How does that grease hold up under street driving conditions? I`m just a bit weary about that.............. 
We were running it in a dedicated racecar. But our side loads are way more than a street car with skinny front tires.
We inspected and changed the fluid every other race weekend (Fri practice. 2 practice sessions, qualifying, 50 lap race).
Our regular traditionally greased wheel bearings would only last about 1/2 season. Our rules dictated a stock spindle with it's small front wheel bearings.
I wouldn't put it in a daily driver for sure. What people consider a "street car" is all over the map. 
You'll have to watch and inspect it way more often than if it was traditional grease. A lot more... What are you willing to do to go just that much faster?
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I`m interested also as mine drag too and if I can`t fix em then the`re gone and onto something better...........
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.
