15/16 ?master cylinder
#2953899
08/14/21 11:30 PM
08/14/21 11:30 PM
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Joined: Jan 2003
Posts: 1,979 s. e. pa.
calrobb2000
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 1,979
s. e. pa.
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hi i need a part no /brand a doul master cylinder with a 15/16" bore .
would like allum
2 or 4 bolt mount ok .
front disc / rear drum
thank you !
called doctor diff no answer left message no cal back after 3 days ?
soooo what to doo now ?
got a new m c i had lay in around from a swap meet buy cost $5 .
re moved the piston stuck it in the lathe , bored the hole to 7/16" dia
went in app 3/8 from bore opening and inlarged hole some app 3/8 in length .
this is a step for the rubber rod holder put some silicone grease on and rod snapped right in .
had one of the 4 hole to two hole adapters layin around dont know where i got it ?
put m c on and drilled holes in two old caps and had the plastic bleeders you get with new master cylinders .
stuck them on there , to do it correctly the hose must be in the fluid in resivour to get all air out
pump slow app 20 times till no air.
hook up lines , bleed brakes .
pedal feels good , test drive tomrow if no rain !
old mc was 1-1/8 heavy c i , new light alu mopar mc part no 520066828
hope this helps someone.
'
Last edited by calrobb2000; 08/21/21 11:37 PM. Reason: update
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Re: 15/16 ?master cylinder
[Re: justinp61]
#2955873
08/21/21 12:35 AM
08/21/21 12:35 AM
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Joined: Dec 2003
Posts: 3,957 West Coast, CA
Troy
master
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master
Joined: Dec 2003
Posts: 3,957
West Coast, CA
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15/16” will give you a long pedal travel with a slightly spongy pedal feel. I have one in my Barracuda now and I’m switching it out to 1 1/16”
....there is nothing like driving my 1968 Hemi Dart around town and having people looking at you like you're nuts!!
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Re: 15/16 ?master cylinder
[Re: Troy]
#2955937
08/21/21 11:18 AM
08/21/21 11:18 AM
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Joined: Jan 2003
Posts: 30,947 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 30,947
Oregon
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15/16” will give you a long pedal travel with a slightly spongy pedal feel. I have one in my Barracuda now and I’m switching it out to 1 1/16”
Just depends what is on the other end. I use a 15/16 mc on my Coronet with 4 wheel disc brakes and the pedal is high and hard. The car stops great. The important factor is the ratio of the piston sizes in the MC and calipers. That ratio has to be correct for the brake system to work properly. It isn't a random guessing thing, it is just math.
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Re: 15/16 ?master cylinder
[Re: Troy]
#2955972
08/21/21 01:04 PM
08/21/21 01:04 PM
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Joined: Oct 2003
Posts: 11,678 W. Kentucky
justinp61
I Live Here
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I Live Here
Joined: Oct 2003
Posts: 11,678
W. Kentucky
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15/16” will give you a long pedal travel with a slightly spongy pedal feel. I have one in my Barracuda now and I’m switching it out to 1 1/16”
My Dart has Wilwood rears and Strange front brakes. When the factory non power, drum brake MC went bad I installed either a 1 1/16 or a 1 1/8" bore MC on the car. The first time I drove it when I got to the end of my driveway I had both feet on the brake pedal and both hands on the wheel to stop it. That afternoon I ordered a 15/16" bore MC from Cass. I would like to try a 7/8" bore on it as the car has never stopped as well as I'd like it to since I removed the factory iron MC.
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