Master Cylinder Size?
#1401468
03/12/13 08:40 PM
03/12/13 08:40 PM
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Joined: Feb 2009
Posts: 773
Crofton, Ky.
rattler
OP
super stock
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OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
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What bore size Master cylinder are you guys running with a front disc, rear drum manual break set-up?
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
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Re: Master Cylinder Size?
[Re: rattler]
#1401469
03/12/13 09:29 PM
03/12/13 09:29 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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65 dart DD. 74 A discs/10" drums. 1&1/8 dual alum M/C. On paper the bore is too big but just me putting around town the pedal effort needed ain't excessive (& I'm not that strong). It will lock em up in the rear if I brake too hard but that rarely happens
live every 24 hour block of time like it's your last day on earth
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Re: Master Cylinder Size?
[Re: RapidRobert]
#1401470
03/12/13 10:43 PM
03/12/13 10:43 PM
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Joined: Feb 2009
Posts: 773
Crofton, Ky.
rattler
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OP
super stock
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Posts: 773
Crofton, Ky.
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THanks. I had an 1 1/8 bore dual aluminum on my green truck. It never would stop very well with 88 dak front brake set up and 70 b-body 11" rear drums.I am thinking it may be the weight sensing proportioning valve deal on the dak. I am replacing that stuff with a b-boby proportioning valve in front and only the single line to the rear like normal.I am trying to improve the breaks before I go down the track this year. Doctor Diff is building me a 1350 drive shaft now.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
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Re: Master Cylinder Size?
[Re: 70Duster440]
#1401475
03/13/13 08:22 PM
03/13/13 08:22 PM
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Joined: Feb 2009
Posts: 773
Crofton, Ky.
rattler
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OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
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I have asked Dr. Diff for a suggestion on Master size. One thing that may be an issue is my pedal ratio, it is 8 to 1. He said I should have about 6.25 to 1. I'll wait and see what he suggests.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
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Re: Master Cylinder Size?
[Re: rattler]
#1401476
03/14/13 02:17 PM
03/14/13 02:17 PM
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Joined: Feb 2009
Posts: 773
Crofton, Ky.
rattler
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OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
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What would be the stock Dodge application for a 1 inch bore aluminum 2 bolt master.If I am going to change bore size, now would be the time while I have the 1 1/8 off.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
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Re: Master Cylinder Size?
[Re: BDW]
#1401479
03/14/13 08:20 PM
03/14/13 08:20 PM
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Joined: Feb 2009
Posts: 773
Crofton, Ky.
rattler
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super stock
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super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
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Thanks, I'll probaly put the Diplomat master in. That will be about 17% difference im piston area. I have an 8 to 1 pedal ratio, so I don't want to go too small on bore.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
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Re: Master Cylinder Size?
[Re: cruzin]
#1401481
03/16/13 09:29 AM
03/16/13 09:29 AM
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Joined: Feb 2009
Posts: 773
Crofton, Ky.
rattler
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super stock
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OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
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I had to hang a set of pedals under the dash of my truck( they originally came up threw the floor). To get the pedal down to where it needs to be, it ended up being 16 inches from pivot to pad. The break rod is 2 inches from pivot to rod bolt hole in pedal. I should finish the breaks up today with the F body master and switching to B body proportioning valve. I can't drive it yet, waiting for my new drive shaft to arrive.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
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Re: Master Cylinder Size?
[Re: rattler]
#1401482
03/17/13 12:44 AM
03/17/13 12:44 AM
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Joined: Aug 2003
Posts: 43,219
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,219
Bend,OR USA
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Quote:
THanks. I had an 1 1/8 bore dual aluminum on my green truck. It never would stop very well with 88 dak front brake set up and 70 b-body 11" rear drums.I am thinking it may be the weight sensing proportioning valve deal on the dak. I am replacing that stuff with a b-boby proportioning valve in front and only the single line to the rear like normal.I am trying to improve the breaks before I go down the track this year. Doctor Diff is building me a 1350 drive shaft now.
Is that a 1957 Dodge cab? It looks really good from the rear  I had a 1957 Dodge one ton(small back window) car hauler that had a bunch of miles on it when I bought it, I ended up replacing the motor,clutch, radaitor, rear end and cab  It ended up with a 1959 or 1960 cab on it, CRS disease 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Master Cylinder Size?
[Re: babarracuda]
#1401484
03/17/13 11:05 AM
03/17/13 11:05 AM
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Joined: Feb 2009
Posts: 773
Crofton, Ky.
rattler
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super stock
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OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
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Yep Cab, it's a 57 Dodge cab and bed with a little 512 in it.This year it going down the track. I hope.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
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It was a 1.0 inch diameter, I hadn't measure the original one until it went bad 
The new one is harder to stop the car, it takes more pedal pressure 
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