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20angier

Replace Master Brake Cylinder

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Hello,

 

My brake cylinder is leaking, I am looking to replace it. I wanted to know if anyone found a better aftermarket cylinder than the oem for a reasonable price. 

 

Thanks

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There are a few who have upgraded to bigger, including myself. Check out page 2 towards the bottom.

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16 hours ago, johann_peralta said:

There are a few who have upgraded to bigger, including myself. Check out page 2 towards the bottom.

 

Yeah, but you gave no info about it.

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1 hour ago, hawairish said:

 

Yeah, but you gave no info about it.

My bad, I though I did.

Its a second gen dodge ram master. From what I've read, the 1500/2500/3500 used the same one, regardless or gas or diesel. Its a 1.25 bore, m10x1 and m12x1 fittings. The 3.5 used a different master than the 3.3, but with carefully manipulating of the hard lines, i've gotten a 3.5 master to fit a 3.3. So I'd imagine you can make the 3.5 lines fit the dodge master also. The Nissan is a 1" bore, and both ports are m10x1. So the front port on the dodge will need an adapter. Hood doesn't close all the way unless you remove some of the lining on inside; the dodge master sits higher up. Could put washers between the hood and the hood brackets also. 

 

Here is the master: https://www.partsgeek.com/gbproducts/HC/1968-09047407.html?utm_content=HC&utm_term=1998-2001+Dodge+Ram+1500+Brake+Master+Cylinder+Dorman+M390426+98-01+Dodge+Brake+Master+Cylinder+1999&fp=pp&gbm=a&utm_source=google&utm_medium=ff&utm_campaign=PartsGeek+Google+Base&gclid=Cj0KEQiAlsrFBRCAxcCB54XElLEBEiQA_ei0DEz_UIhNV5Me8XA2-z1XdRI_F6LXFLpE-vEqNb3iTG4aAoZ18P8HAQ&ad=47433965532

 

Here is the adapter I used: https://www.ebay.com/itm/2X-Fitting-Reducer-Metric-M12-M12X1-Male-to-M10-M10X1-Female-Thread-Adapter-A268/401543647947?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

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18 hours ago, johann_peralta said:

My bad, I though I did.

Its a second gen dodge ram master. From what I've read, the 1500/2500/3500 used the same one, regardless or gas or diesel. Its a 1.25 bore, m10x1 and m12x1 fittings. The 3.5 used a different master than the 3.3, but with carefully manipulating of the hard lines, i've gotten a 3.5 master to fit a 3.3. So I'd imagine you can make the 3.5 lines fit the dodge master also. The Nissan is a 1" bore, and both ports are m10x1. So the front port on the dodge will need an adapter. Hood doesn't close all the way unless you remove some of the lining on inside; the dodge master sits higher up. Could put washers between the hood and the hood brackets also. 

 

Here is the master: https://www.partsgeek.com/gbproducts/HC/1968-09047407.html?utm_content=HC&utm_term=1998-2001+Dodge+Ram+1500+Brake+Master+Cylinder+Dorman+M390426+98-01+Dodge+Brake+Master+Cylinder+1999&fp=pp&gbm=a&utm_source=google&utm_medium=ff&utm_campaign=PartsGeek+Google+Base&gclid=Cj0KEQiAlsrFBRCAxcCB54XElLEBEiQA_ei0DEz_UIhNV5Me8XA2-z1XdRI_F6LXFLpE-vEqNb3iTG4aAoZ18P8HAQ&ad=47433965532

 

Here is the adapter I used: https://www.ebay.com/itm/2X-Fitting-Reducer-Metric-M12-M12X1-Male-to-M10-M10X1-Female-Thread-Adapter-A268/401543647947?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Why did you choose to use a dodge master.. was it because you wanted more fluid?

 

Here are two cylinders I found on rock auto ~

 

 

 

 

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Huh, I've never heard of a master cylinder upgrade on an R50. Would a combination of this and @hawairish's disk brake swap yield some great results for those with big tires and/or towing? 🤔

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19 minutes ago, mjotrainbrain said:

Huh, I've never heard of a master cylinder upgrade on an R50. Would a combination of this and @hawairish's disk brake swap yield some great results for those with big tires and/or towing? 🤔

I wonder..based on his profile pic it looks like his pathy is lifted and on bigger tires - My pathy has a/t but nothing else, it pretty much stock, so i will probably just go OEM or something to that regards

Edited by 20angier

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Johann's rig is extensively modified, and his front brakes (his whole front axle actually) are from something else. If the caliper pistons are bigger, that'll be why he needed a bigger MC to match. Brake pedal feel and travel (assuming everything is in good shape) are determined by the ratio between the MC pistons and the brake caliper/wheel cylinder pistons, so if you modify one end of the system and not the other, you'll make the pedal harder/softer. On a stock rig, I'd go with a stock replacement.

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