[417strokerdart]

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? Oh, BTW I am using a single chrysler type master cylinder with 4 wheel disc brakes.

 

[michaeld]

The port closest to the mounting flange goes to the rear brakes,, it you do this you won`t need the adj prop valve..

 

[417strokerdart]

I am getting conflicting stories on this. I am getting people telling me that with a Wilwood the ports are reversed (front port goes to front brakes, rear port goes to rear brakes). Strange, Mopar, Lamb are set up for (front port goes to rear brakes, Rear port goes to front brakes). Can anyone confirm this?

 

[michaeld]

You said you have the Chrysler cyl{also made by others}... plumb it backwards and the front brakes will skid the front tires with very little pedal effort, and the rear brakes will have little effect.. You do have skinnies on front and big tires on rear?

 

[Blwnwlys]

The port closest to the mounting flange goes to the rear brakes,, it you do this you won`t need the adj prop valve..

I have the single Wilwood master with the remote reservoir setup. The outlet closest to the mounting flange has the F and the other one has the R obviously. By plumbing them in reverse you will send more to the rear which is what your after. I am not a brake expert by any means. I'm just saying that's what it says on my master cylinder. Hope this helps.

 

[turbosn95]

and if you mounted it low you may need a residual valve to stop the fluid from coming back to the master

 

[417strokerdart]

I have 2 lb residual valves to plumb in each line since the master is now lower than the calipers. I do indeed want the higher fluid volume port to go to the rear (opposite that of a stock type of car) since I have alot more tire back there. Problem is I don't know which port is the primary port. I know both ports will supply the same pressure, it is only volume that is different. I run 4 piston Strange calipers on both the front and rear, so volume requirements should be the same. I just want the rears to do most of the braking. Does this change any of the opinions?

 

[OB1]

Your primary port on a Chrysler master is the port closest to the firewall. I however, do not agree with you switching the ports around. I have set up hundreds of these brake systems on drag style cars weighing up to 3600lbs. My opinion (and this is my opinion) is that you should run it the way its designed. The only time we swap the ports is when we run a dual caliper setup in the rear.

 

[gray86hatch]

I have a wilwood/strange brakes on my car with the dodge van master and I had to turn the rears way down or it would slide the rear tires. I have the fronts going to the rear port of the master.

Tim

 

[Blwnwlys]

Your primary port on a Chrysler master is the port closest to the firewall. I however, do not agree with you switching the ports around. I have set up hundreds of these brake systems on drag style cars weighing up to 3600lbs. My opinion (and this is my opinion) is that you should run it the way its designed. The only time we swap the ports is when we run a dual caliper setup in the rear.

I am going to be running 4 piston calipers on all 4 corners, wilwood master, big/skinnies, what do you recommend in that case?

 

[OB1]

Which Wilwood master?


My favorite setup is the Wilwood pedal assy with individual masters and a built in bias bar. But just for stock style masters, I like the earlier corvette disc/disc masters (7/8 or 15/16) bore. Or I like the new Wilwood billets. The main reason I dont like the Chrysler style master from Wilwood or Strange is the bore size is too big. They only offer it in a 1 1/16 or 1 1/8. Takes way to much force to get the right amount of pressure.

 

[Blwnwlys]

It's the single with the remote reservoirs. I don't recall at the moment what piston size it was.

 

[OB1]

It's the single with the remote reservoirs. I don't recall at the moment what piston size it was.

That should have the 1" bore......For me personally, I like the 1", but I am a big guy. It takes more pedal effort to get the 1000psi+ caliper reading. But like I said, I typically recomend a 7/8 or 15/16. And make sure that your pedal ratio is minimum 6:1

 

[Blwnwlys]

I'm not a small guy myself 225, so that should be good. I have an adjustable prop. valve to go with it. Would you just hook it up normally and put the prop valve inline to the rears?

 

[OB1]

I'm not a small guy myself 225, so that should be good. I have an adjustable prop. valve to go with it. Would you just hook it up normally and put the prop valve inline to the rears?

Thats exactly what I would do.

 

[Blwnwlys]

Thanks for clearing that up Joel, I hope this answers it for 417Strokerdart too. Nice to hear it from someone that does it everyday.