Need Master Cylinder recommendation - A-body
#1007671
06/06/11 01:13 AM
06/06/11 01:13 AM
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Joined: Feb 2005
Posts: 1,612 Vista, California
ChickMaggot
OP
top fuel
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OP
top fuel
Joined: Feb 2005
Posts: 1,612
Vista, California
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Guys,
I need an MC for a brake upgrade I'm doing.
I'm going from drum/drum to disc/drum on a '74 Duster. Got all the parts with the exception of the MC.
I'd like to go manual discs on the front to save as much room as possible for the 440. Right now, all I can seem to find in the way of MC's are for power disc brakes.
Can I use one designed for power brakes or do I need to get an actual manual brake unit?
My first time doing this swap. Can ya help a brutha out?
Maggot
You can lead a gift horse to water, but you can't look in his mouth.
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Re: Need Master Cylinder recommendation - A-body
[Re: ChickMaggot]
#1007672
06/06/11 01:43 AM
06/06/11 01:43 AM
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Joined: Dec 2009
Posts: 153 grande prairie , ab , canada
68notch
member
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member
Joined: Dec 2009
Posts: 153
grande prairie , ab , canada
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walked into a auto parts store and ordered one for my 68 barracuda , manual with front discs , after i changed from front drums
Last edited by 68notch; 06/06/11 01:58 AM.
theres nothing as permanent as a temporary fix
70 super bee
79 red express
67 fargo
8o aspen rt
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Re: Need Master Cylinder recommendation - A-body
[Re: can.al]
#1007679
06/06/11 04:21 PM
06/06/11 04:21 PM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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best way is to use a 4 bolt to 2 bolt adaptor on the firewall and use a newer style 2 bolt alum MC from mid 80s car/truck gives much more room with the BB in A-bodys dr diff sells a nice adaptor,MP sells one,you can even get an offset one for a hemi in an A-body I used the mp adaptor and adjustable brake rod from master power brake used the 73 manual disc brakes with 11x2.5 rear drums on my 68 Dart I used the stock 2 bolt alum MC off the power brake set up on my 88 truck and made my own 4 bolt to 2 bolt alum plate for firewall support to go manual brakes,manual steer,manaul shift with the 440 in the truck
Last edited by scratchnfotraction; 06/06/11 04:22 PM.
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Re: Need Master Cylinder recommendation - A-body
[Re: can.al]
#1007680
06/06/11 04:26 PM
06/06/11 04:26 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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If your current (drum/drum) M/C is good keep it! Take off the lines from it & stick a drill bit deep into the brass cone in the half closest to the firewall as that is the half that will power the front discs and if there is no residual pressure valve (RPV) you are set & it's just a piece of neoprene on top of a spring & you'll feel the springiness if it is there. Disc/drum M/C's have a larger reservoir in the rear (disc) half as discs do use a bit more fluid vol when applied as opposed to a wheel cyl & if grandma does not have her M/C checked regularly it could eventually get low enough to run out of enough fluid during a panic stop and the resulting lawsuit could b disastrous but for enthusiasts such as ourselves who keep fluid levels topped off you'll be fine. If you do have to get a M/C make sure the tapered inside recess of the rear piston (it's like a thimble) has a shallow recess for the neoprene retainer on the pushrod to lock into and Manual brake M/C's must have this piston recess but mistakes do happen and I would contact Doc for the right bore size to get, though I have a 1&1/8" bore M/C on a disc (74)/drum (10") on a 65 dart & no probs & I (re)used the OE drum/drum splitter which is not the way it is supposed to b done but stops perfect & no excessive front pad (semi mets) wear.
live every 24 hour block of time like it's your last day on earth
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Re: Need Master Cylinder recommendation - A-body
[Re: ChickMaggot]
#1007681
06/08/11 02:46 AM
06/08/11 02:46 AM
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Joined: Feb 2005
Posts: 1,612 Vista, California
ChickMaggot
OP
top fuel
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OP
top fuel
Joined: Feb 2005
Posts: 1,612
Vista, California
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Seth, thanks for the part number. Went down and ordered one today and will pick it up tomorrow. Seemed like the best option. No adapters, mods, etc. Just bolt on and go. I knew it was an option on the car, just couldn't find the reman part number. For anyone interested - Kragen/O'Rielly, Cardone #10-1627 Maggot
You can lead a gift horse to water, but you can't look in his mouth.
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Re: Need Master Cylinder recommendation - A-body
[Re: None2Slow]
#1007683
06/09/11 12:10 AM
06/09/11 12:10 AM
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Joined: Feb 2005
Posts: 1,612 Vista, California
ChickMaggot
OP
top fuel
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OP
top fuel
Joined: Feb 2005
Posts: 1,612
Vista, California
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It'll be a straight R&R for me. Can't get easier than that. Maggot
You can lead a gift horse to water, but you can't look in his mouth.
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