(0)
Since 1952
America's Oldest Speed Shop ®
Low Prices
Knowledgable Techs
Huge Inventory
Same Day Shipping
Award Winning Service
Speedway Motors Bill Smith


Adjustable Proportioning Blocks With Brake Light Switch
 
 
 
Click image to enlarge
Adjustable Proportioning Blocks With Brake Light SwitchAdjustable Proportioning Blocks With Brake Light SwitchAdjustable Proportioning Blocks With Brake Light SwitchAdjustable Proportioning Blocks With Brake Light SwitchAdjustable Proportioning Blocks With Brake Light Switch

Starting at $69.99

Close [x]

Watch the video below to learn more about the differences in brake lines, flare types and fittings you may want to consider before plumbing away on your current chassis project.

 

This adjustable proportioning block allows you to run lines from the master cylinder to the block and then to the appropriate wheels.  What is neat about it is that it also contains the proportioning valve and brake light switch.  This dramatically reduces the amount of fittings needed and potential leaks.

The adjustable proportioning valve regulates rear brake pressure, helping to maintain correct brake bias between front and rear brakes.  It is designed for dual bowl master cylinders.  The distribution block connects to the master cylinder and distributes brake fluid to all four wheels.  An easy to turn handle with directional arrows makes it simple to either increase or decrease rear brake pressure.

The brake block is plumbed as follows.  The port on the proportioning valve end is the "out" line for the rear brakes.  The port between th proportioning valve and brake light switch is the "in" line for the rear brakes.  The port in front of the brake light switch is the "in" line for the front brakes.  The port on the brake light switch end is the "out" line to the passenger front brake while the port on the bottom is the "out" line to the driver front brake.

The block accepts 3/16" brake lines and the inlets and outlets on this unit are 3/8"-24 inverted flare females.  It has two inlets from the master cylinder, two outlets to the front brakes and one outlet to the rear brakes.  It includes five stainless steel 3/16" fittings and wiring pigtail for rear brake light switch.  Mounts to any convenient location.  This is not a direct factory replacement for original blocks.  Some line modifications may be necessary.

This block has individual lines for the front wheels and each line would require a residual valve if the master cylinder is mounted under the floor on the frame rail.  2 psi for each front if it has disc brakes and 10 psi for drum brakes. It still will require a residual valve to the rear with the same psi, depending on the brake type used.

910-31358 Instructions (pdf)

Reviews for Item #: 91031358
Price: $69.99 - $99.99
ADJUSTABLE PROPORTIONING BLOCK
Item #:
91031358
Select Item Options to See
Pricing and Availability:

Processing...
Some parts are not legal for sale or use in California
on any pollution controlled motor vehicles.
Email this page
Close [x]
You can send this product by email to a friend!
Enter the required information in the spaces provided below. They will receive an Email with the picture of this product and a link back to our site.
Your Name:
Your Email:
Friends Name:
Friends Email:
 
Print this Page
Same Day Shipping Before 3PM!
CALCULATE TRANSIT TIME
Most orders ship within 24 hours.
Enter zip code for shipping address:
*This is an estimate only, special circumstances may increase processing/shipping times for a small percentage of orders. These estimates do not apply to "Factory Shipped" items or items shipping via "Best Way" i/e truck / common carrier. U.S. orders only, transit calculations not available for foreign orders.

Need some help?



If you need help or have a question for our techs about this specific product, contact us.
Email (Required):
You will be redirected to a login page if you are not signed into your account.
Email response may take 24-48 hours.
You May Also Be Interested In...