Master Cylinder question Race Brakes only
#910943
01/22/11 08:15 PM
01/22/11 08:15 PM
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Out West
408strokerdart
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Ok, having recently relocated my master cylinder under the floor I am re-plumbing the brake system. Just want to make sure I have it the best way possible. What master cylinder port do you use for the front/rear brakes? I know there is some proportioning built into the master cylinder, but I am talking big rear tire drag only use. I will be plumbing in an adjustable valve as well, so where should it go.....front brake line or rear brake line? BTW, Chrysler 1 1/8" bore master cylinder with 4 wheel disc brakes.
Last edited by 408strokerdart; 01/22/11 08:18 PM.
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Re: Master Cylinder question Race Brakes only
[Re: 408strokerdart]
#910944
01/22/11 08:33 PM
01/22/11 08:33 PM
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Joined: Jan 2007
Posts: 1,169
MI
68shifter
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super stock
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I just went through that on mine. Wilwood said front to front and rear to rear and then I had to use a residual pressure valve in the front side, so far so good. Love the car and chassis pics by the way 
68' Barracuda (4 speed)
64' Savoy (4 speed)
65' Satellite (girl tranny)
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Re: Master Cylinder question Race Brakes only
[Re: 68shifter]
#910945
01/22/11 08:36 PM
01/22/11 08:36 PM
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Out West
408strokerdart
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Quote:
I just went through that on mine. Wilwood said front to front and rear to rear and then I had to use a residual pressure valve in the front side, so far so good.
Love the car and chassis pics by the way
Thanks. That is the way I had them before, but just wanted to make sure that was the recommendation of others here. 
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Re: Master Cylinder question Race Brakes only
[Re: 408strokerdart]
#910946
01/22/11 09:03 PM
01/22/11 09:03 PM
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Joined: Jun 2007
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Plymouth Meeting, PA
bigtimeauto
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Wilwood master's are that way but strange masters are opposite. I have my mopar one with the outlet closest to the mounting flange to the front brakes. No adjustable valves on my cars.
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: Master Cylinder question Race Brakes only
[Re: bigtimeauto]
#910947
01/22/11 09:07 PM
01/22/11 09:07 PM
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SOUTH JERSEY
HEMIFRED
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SOUTH JERSEY
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10 lb residual valve mandatory
home of the
Sox and Martin Hemi Duster
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Re: Master Cylinder question Race Brakes only
[Re: bigtimeauto]
#910949
01/22/11 09:12 PM
01/22/11 09:12 PM
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Quote:
Quote:
10 lb residual valve mandatory
You probably missed it but we already covered that in another thread. But for disc brakes its 2lb.
 10 is to much.
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Re: Master Cylinder question Race Brakes only
[Re: HEMIFRED]
#910953
01/22/11 10:21 PM
01/22/11 10:21 PM
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Joined: Jan 2004
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Mt. Vernon, Ohio
dartman366
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According to Strange, both outlet port's supply the same pressure, and the outlet port nearest the pushrod supplies the most fluid volume,, typically a drag car has the largest calipers on the rear, while a street driven car has the larget calipers on the front, attach lines accordingly,.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: Master Cylinder question Race Brakes only
[Re: bigtimeauto]
#910956
01/23/11 01:41 PM
01/23/11 01:41 PM
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408strokerdart
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Quote:
Wilwood master's are that way but strange masters are opposite. I have my mopar one with the outlet closest to the mounting flange to the front brakes. No adjustable valves on my cars.
That would make sense with the built in proportioning to run the front port to the back tires and the rear port to the front wheels. I might still put in my adjustable valve going to the rear brakes. Would this make sense?
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Re: Master Cylinder question Race Brakes only
[Re: 408strokerdart]
#910957
01/23/11 02:14 PM
01/23/11 02:14 PM
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Plymouth Meeting, PA
bigtimeauto
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not to me it wouldn't. If i was going to put one in a drag car it would be in the front line.
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: Master Cylinder question Race Brakes only
[Re: bigtimeauto]
#910958
01/23/11 02:54 PM
01/23/11 02:54 PM
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408strokerdart
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Quote:
not to me it wouldn't. If i was going to put one in a drag car it would be in the front line.
Is the proportioning valve simply a flow restrictor? It doesn't change the pressure if I remember correctly. So it would only make sense to place it in the line/port that has the highest volume from the master cylinder. In the case of the Mopar brand unit, this is the front port that you have going to the rear brakes....is this right? I'm not wanting to make this more complicated than it needs to be, just trying to wrap my mind around it.
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Re: Master Cylinder question Race Brakes only
[Re: 408strokerdart]
#910959
01/23/11 06:45 PM
01/23/11 06:45 PM
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Plymouth Meeting, PA
bigtimeauto
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it is a flow restricter only on a spike so if i felt inclined to add one to a drag car it would be on the front skinny tires not the bigger sticky ones.
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: Master Cylinder question Race Brakes only
[Re: bigtimeauto]
#910960
01/23/11 06:54 PM
01/23/11 06:54 PM
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408strokerdart
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Quote:
it is a flow restricter only on a spike so if i felt inclined to add one to a drag car it would be on the front skinny tires not the bigger sticky ones.
Ok, that makes more sense to me. Might as well not even be there then.
Is the primary port (on a mopar brand unit) the one closest to the mounting flange?
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Re: Master Cylinder question Race Brakes only
[Re: 408strokerdart]
#910961
01/23/11 07:31 PM
01/23/11 07:31 PM
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Romeo MI
MR_P_BODY
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Quote:
Quote:
it is a flow restricter only on a spike so if i felt inclined to add one to a drag car it would be on the front skinny tires not the bigger sticky ones.
Ok, that makes more sense to me. Might as well not even be there then.
Is the primary port (on a mopar brand unit) the one closest to the mounting flange?
Primary port? The big reservoir is for disc brakes
in a production car... if it were me and running
4 wheel disc I would run the rear (nearest the flange)
to the rears and run the front to the fronts
with the prop valve on the fronts... the only reason
I'm saying rear reservoir to the rears is you will
be about the same volume to any of the calipers ...
I have mine hooked up just the old disc/drum way
and then changed to rear disc but left the lines
the same way
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Re: Master Cylinder question Race Brakes only
[Re: 408strokerdart]
#910962
01/23/11 07:40 PM
01/23/11 07:40 PM
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Quote:
Quote:
it is a flow restricter only on a spike so if i felt inclined to add one to a drag car it would be on the front skinny tires not the bigger sticky ones.
Ok, that makes more sense to me. Might as well not even be there then.
Is the primary port (on a mopar brand unit) the one closest to the mounting flange?
I have never run one on any 4 wheel disc brake set up...
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