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05-24-2019, 08:11 PM | #1 |
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brake line distribution blocks
Anyone know if I can get a brake line distribution block with 3 holes for the 3/8-24 brake lines and 1 hole for a 1/8" NPT stoplight switch.
I changed my '59 Edsel from the single res M/C to a later mustang drum/drum one. I split the front and rears and need to run a stop light switch of a block for the fronts. |
05-24-2019, 09:25 PM | #2 |
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Re: brake line distribution blocks
You don't need a fitting with three brake line outlets unless its for looks. You only need one with two. Put the fitting (block) in either the front line or the rear line. Either will work the brake lights.
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05-25-2019, 04:54 AM | #3 | |
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Re: brake line distribution blocks
Quote:
Are you using a PRESSURE DIFFERENTIAL VALVE (DRUM-DRUM) with the swap (the BRAKE PRESSURE WARNING SW is disabled)? If not and only using a DISTRIBUTION BLOCK, you may have negated the advantage of the MC upgrade. You can plumb in a tee in the front circuit to accept the brake lamp switch. |
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05-25-2019, 06:31 AM | #4 |
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Re: brake line distribution blocks
I replaced the stock single res with a 67 Mustang dual res. It is also a drum/drum type.
I removed the rear brakes from the old distribution block and blocked off it's port (38-24 IF) then put the rear on their own block. I wanted at least half brakes if a line failed. I was using a lever style electrical stop light switch but they are all junk so looking to use the 1/8 NPT stock style hydro switch but I have no port for it. This never had a low pressure warning light. Don't need a proportioning valve on drum/drum. However I did plumb in a pair of residual pressure valves. I may have to settle for an adapter fitting. |
05-25-2019, 08:36 AM | #5 |
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Re: brake line distribution blocks
residual valves are used when the master is below the brake calipers
Last edited by 54vicky; 05-25-2019 at 08:52 AM. |
05-25-2019, 11:09 AM | #6 | |
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Re: brake line distribution blocks
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Quote:
Did you check the new MC for included residual valves? |
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05-25-2019, 11:11 AM | #7 |
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Re: brake line distribution blocks
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05-26-2019, 07:35 AM | #8 |
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Re: brake line distribution blocks
:<)
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05-26-2019, 09:24 AM | #9 |
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Re: brake line distribution blocks
your honor when you read what he said about plumbing a pair of residual valves you will see what I was referring to.I deal in real world use not someones theory.as to steering wheel show me proof as I said.back to your books
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05-26-2019, 12:16 PM | #10 | ||||
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Re: brake line distribution blocks
Quote:
Quote:
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If you are still now within the real world, you need to research BRAKE HYDRAULICS and VALVING. Depending on the manufacturer and quality of the MC he bought, the 10# residual valves (DRUM/DRUM) are included in the outlet ports. So, as how is describing his install, he has double residual valves. That surely couldn't affect anything ... I think what the OP is describing is separating the front and rear circuits through individual junction blocks and wants the front block with an additional port to install the hydraulic brake lamp switch. I also think that he has also installed two free-standing 10# residual valves when those valves should have come with the new MC. Maybe on your next near-earth orbit, you can send down a satellite feed and GOOGLE HYDRAULIC BRAKE VALVING, THEIR USES AND DANGERS. Now where is that IGNORE FEATURE? It seems to slip from time to time. Last edited by KULTULZ; 05-26-2019 at 12:21 PM. |
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05-26-2019, 12:49 PM | #11 | |
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Re: brake line distribution blocks
Quote:
Not true. Residuals were used on all drum brakes, regardless of master location, to the best of my knowledge, up to the mid '70s. Vintage drum brakes really do need residuals, either internal in the master cylinder, or external 10 lb inline aftermarket. Disc brakes need a 2 lb residual when the master is below the calipers. Last edited by V8 Bob; 05-26-2019 at 12:55 PM. |
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05-26-2019, 12:59 PM | #12 |
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Re: brake line distribution blocks
Quote:
He is half right Bob. A 2# RESIDUAL VALVE is used when the caliper/wheel cylinder is above the MC install level to hopefully keep the fluid from draining back into the MC and giving a spongy brake pedal. I know you know that ... |
05-26-2019, 01:02 PM | #13 | |
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Re: brake line distribution blocks
Quote:
See? I knew you knew! |
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05-26-2019, 01:03 PM | #14 | |
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Re: brake line distribution blocks
Quote:
I added that info a few minutes ago, after you had quoted me. |
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05-26-2019, 01:04 PM | #15 |
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Re: brake line distribution blocks
I was wondering as you are plenty sharp ...
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05-26-2019, 11:58 PM | #16 |
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Re: brake line distribution blocks
Yes. The master cylinder does not have internals.
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05-27-2019, 04:25 AM | #17 |
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Re: brake line distribution blocks
Be sure as the actual valve(s) (OEM) are hidden behind the tubing seat(s).
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06-03-2019, 01:19 PM | #18 |
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Re: brake line distribution blocks
I'd like to add a dual reservoir also, for safety. Doesn't the upgrade kit have all the particulars sorted out?
I'm looking at a kit that also includes front discs, I believe it comes with all the necessary parts, proportioning valves, blocks, etc. After install how do you test if the brakes are operating correctly? A bit more precise, if the discs are overpowered or the rear brake shoes not adequately stopping. I spoke with another person who did this upgrade and was disappointed, he could not discern an improvement in braking. Perhaps just a dual reservoir with brake shoes only. |
06-03-2019, 03:33 PM | #19 | |
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Re: brake line distribution blocks
Quote:
A '56 has 11" brakes on it. IMO, one doesn't need to go to front discs unless it is a modified street car. The dual MC will most likely give you all you want, again IMO. If front discs were put on a car and the driver noticed no discernible difference, then something was done wrong and/or incomplete. Are you running a booster? Wait for more opinions.
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The above posted information is in my opinion only (IMO) and may contain copy and paste material(s). In addition, any above tech information is supplied in good faith. No responsibility implied or otherwise can be accepted for the way others use or interpret provided data. Your experience(s), opinion(s) and mileage may vary. DIAGNOSED CDO - (OCD In Correct Alphabetical Order) |
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06-03-2019, 06:26 PM | #20 |
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Re: brake line distribution blocks
Hi Kultulz!
Car does have a vacuum operated booster. Yes, the shoes stop the car well and this may be unbelievable-- straight. The 302 weighs 150 lbs less than the 292 and I believe the AOD is lighter. I still give a lot of following distance in front of me and stay in the outer lanes on freeways. Perhaps I should stay with shoes, but those pads change out so easily.... |
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