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#91031367-BLK
$124.99
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Universal Fit, Disc/Drum Brake System Type, Oxide
| MFG. Part # | 91031367-BLK |
| Proportioning Valve Type | Knob Adjustable |
| Port Quantity | 3-Port |
| Finish | Oxide |
| Color | Black |
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Return PolicyAdding an adjustable brake proportioning valve to your vehicle helps dial in the exact amount of fluid pressure to the rear brakes that you desire for your vehicle’s brake type, weight, and tire contact patch, but plumbing your new braking system on your project vehicle does not have to be difficult. You can easily save yourself time and frustration by utilizing our compact distribution block with built in adjustable brake proportioning valve and brake light pressure switch. Instead of using a bunch of brass fittings, or an ancient combination valve that might not be setup properly for your brake system, and then tossing in an adjustable proportioning valve somewhere in the rear brake line (and hope you can reach it easily enough for adjustment), this little wonder will do it all for you.
We designed our adjustable brake proportioning valve distribution block to be easy to install and plumb for any system. We include a .123-inch thick pre-bent mounting bracket designed to work with standard horizontal two bolt/stud master cylinder mounting patterns that places the block horizontally under the master cylinder. This provides a clean mounting solution while keeping the lines to from the master cylinder to the distribution block short. Stainless steel pre-bent lines are included to plumb your master cylinder to the block as well.
Compatible with four-wheel drum, disc/drum, or disc/disc brake systems, the aluminum distribution block is machined for standard 3/8-24 double flare fittings for both the IN and OUT ports to use common 3/16-inch brake lines. Furthermore, we have included two front OUT ports to allow plumbing the front brakes separately, or you can plug one port with a standard 3/8-24 male flare port plug and use an inline tee elsewhere in your engine compartment (perfect for under floor master cylinder applications).
The rear portion of the distribution block feeds a single outlet that you can adjust brake fluid pressure output on via the built in brake proportioning valve, sometimes referred to as a brake bias adjuster, with a simple rotary adjustment knob. If your classic truck or muscle car is using a factory 1/4-inch rear brake line (common on rear drum applications back in the day) you can use the included brake line adapter that will allow the 1/4-inch line’s 7/16-24 fitting to thread in. Once plumbed the adjustment knob allows simple and easy rear brake circuit bias adjustments right at the master cylinder.
Available in a black or chrome finish, the choice is yours if you want our brake distribution block with adjustable proportioning valve to disappear under your hood or stand out with some flash. The included brake light pressure switch allows factory or aftermarket brake light circuit wiring to be connected for your vehicle’s brake light circuit without the hassle of fabricating a brake switch mounting bracket under the dash. This is especially helpful on compact hot rods with little room behind the dash, or for vehicles with floor mounted master cylinders and brake pedal arms where an electrical contact switch is difficult to incorporate. At just under 4-inches long and barely and 2 inches wide (horizontally mounted) our distribution block fits in the tightest of engine compartments or along frame rails.
Guides & Documents
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031367-BLK |
| Brand | Speedway Motors |
| Proportioning Valve Type | Knob Adjustable |
| Port Quantity | 3-Port |
| Finish | Oxide |
| Color | Black |
| GENERAL | |
| Brake System Type | Disc/Drum |
| Proportioning Valve Location | Bottom Mount |
| Thread Pitch | 3/8"-24 IFF |
| Pressure Safety Switch Included | Yes |
| Sold in Quantity | Kit |
4.1
58 Reviews
Customers appreciate the product's quality and find it generally practical for various projects, particularly those related to hot rods. Users describe the product as high-quality, well-made, and compact. The adjustable proportioning valve is a feature that appeals to many users. However, users highlighted issues with alignment, leaking, and adjustment complexity. Also, some users found needing modification for proper fitting or not including installation instructions as downsides. Despite these, many customers recommend this product for its core functionality, ease of modification, and overall quality, often choosing it over competitors.
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58 reviews
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Most Liked Positive Review
4.0
Looks Awesome!
I have not completed the installation yet. The fittings from the valve to my master cylinder are too small. I need to find some adapters to make it fit. It would be great if it came with adapters to fit different master cylinders. It would also be great if the bracket was slotted so you don't have to remove the booster, you could just loosen it. I look forward to getting it installed and working on my 53 chevy 3100.
Most Liked Negative Review
3.0
A few short of a good
A few issues: The plate that it is supposed to mount to hits the top of the brake light switch, which the top of it is slightly taller than the actual block for the proportioning valve. I added two thick washers between the two, solving the problem, but it wasn't going to work well out of the box. The supplied input lines were OK, but they are installed so close to the brake light switch and the proportioning valve that a normal tubing wrench is too bulky to fit. A open end wrench does not fit. I had to ruin stubby combination 3/8 wrench by cutting an opening in the box end side for the tubing, and its thin walls were sufficient to allow me to tighten the input lines. The Rear brake output is located on the rear of the valve block, which when installed in a car is extremely awkward to get the line installed. Luckily the wrench I made in prior step helped me with slight angle tweaks to the line I just made to get it lined up to screw in, but it was all by feel. The valve itself says Increase / Decrease and there are no directions. I thought this meant "Increase rear brake" so I adjusted that way. But that is NOT how it works, INCREASE means REDUCE rear brake. Other than those problems, now it seems to working well and solving the problem I had of adding new brake components to an older classic car and having the brakes work properly.
Filter by Ratings
Looks like the picture.
5.0
3 months ago
Drew
Portland, OR
Verified
Looks nice, have yet to install and try it yet.
Would Recommend
Would buy again
4.0
3 months ago
Mr C
Wi
Verified
Worked well easy to install. Nice mounting bracket.
Would Recommend
Nice solid piece
5.0
4 months ago
Bshell
Ocean New Jersey
Verified
Nicely machined and designed valve, came with quality stainless lines and a sturdy mounting bracket which worked with a standard master cylinder
Would Recommend
It's going to look great on my classic truck
5.0
6 months ago
Rob
Tulsa
Verified
Crome will look great
Would Recommend
great quality and arrived fast
5.0
7 months ago
Hayden
Enterprise or
Verified
Very easy to adjust the brakes, simple to install and im very happy with how its performing.
Would Recommend
Looks good quality is high
5.0
9 months ago
Big G
Wisconsin
Verified
Part looks like good quality. Looks like it will work well with my Willwood system. It's a long-term build have not installed it yet. Pieces are still on shelf but will be installed soon.
Would Recommend
LEAKS! Read the reviews, I didn't unfortunately.
1.0
10 months ago
William
Jermyn, PA
Verified
The IN/OUT ports leaked. I love products from Speedway Motors, but don't buy this product. Read the reviews, I made the mistake and didn't do that.
Would Not Recommend
Great product
5.0
a year ago
Dizzy66devil
Thunder Bay Ontario Canada
Verified
Installed easy
I would not buy this product again
1.0
a year ago
Sawman
Louisiana
Verified
This proportioning valve bolted up fine but I could not get the lines to stop leaking. Seems like the cone on the inside of the valve that meets up with the brake line flare isn't high enough to seal
Would Not Recommend
Needed to be altered
3.0
a year ago
Pap
Holly Springs NC
Verified
The bracket didn't fit the master cylinder bolt pattern too narrow had to grind the holes bigger. Also the 3/8 tap for the brake lines isn't tapped deep enough I had to grind each fitting end too work other options double flare ends. Also has to cut down bracket to be able to remove brake light switch. Definitely could have been designed better but hope what I did works.
Would Not Recommend
Showing 10 of 58 reviews
9 Questions • 10 Answers
Does this proportioning valve allow for 100% shut-off to rear? I have used universal disc/drum proportioning valve and adjustable proportioning valve and still can't keep my rear brakes from locking up, even when set all the way closed. I end up having to clamp of the rear brake hose to make sure my front brakes can actually lock up.
by Dan
• 8 years ago
2 answers
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No fluid comes out of the rear port when trying to bleed the brakes with this installed on my '80 Fireibird (disc/disc). I know fluid is getting to the prop valve from the rear line going from the master to the prop valve, but no fluid even trickles out of the rear port on the prop valve. I have no issues bleeding the front calipers, but I can't bleed the rear calipers at all because no fluid flow. Is the valve faulty?
by Jon
• 8 years ago
1 answer
View Answer
will this setup work for a GM disc/disc application?
by Joshua
• 9 years ago
1 answer
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Will part number 91031305 switch work with part number 91031367-BLK?
by Watson
• 9 years ago
1 answer
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Does this have built in residual valves?
by Choptop charlie
• 10 years ago
1 answer
View Answer
Hi, I purchased & just received item 910-31367. 1. The New Proportioning Block has too many Outlets, what fitting do I use to block off the extra port ? 2. The Rear Brake Line in my truck connecting to the old Master Cylinder is a 1/2" flared fitting. 3. What Adapter Fitting do you have that will fit my 1/2" Male Threads Fitting to the 3/8 Port on the New Proportioning Block ?
by Sam
• 10 years ago
1 answer
View Answer
What is the difference between the adjustable proportioning valve and a combination valve? I'm installing yalls 9106002 universal power brake booster and I'm needing a valve for the disc/drum set up.
by Boomer
• 11 years ago
1 answer
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Is the bracket chrome on the "chr" model, or just the proportioning valve?
by Yeahitsfast
• 12 years ago
1 answer
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From abs to no abs I am changing out my abs to non abs. I have two lines coming out of my master and 1 to each wheel off of my abs unit. I was wondering how many lines out are on this unit?
by NickAdam
• 12 years ago
1 answer
View Answer
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