7" DUAL ZINC POWER BOOSTER DISC/DRUM PROPORTIONING VALVE + MASTER CYLINDER
Brand new 4 port master cylinder, 7" Zinc dual diaphram booster, proportioning valve, bracket, and the hard lines to hook the proportioning valve to the master cylinder.
This kit is for disc/drum applications.
Brand new 7" dual diaphragm, zinc coated brake booster is universal, bolting up to most street rods, hot rods, and other vehicles with no problem. This is a great upgrade from a single diaphragm booster. Dual diaphragm boosters offer 19% better stopping power over the single.
The 1" bore, 4 port master cylinder is used for 4 wheel disc or drum brakes. This master cylinder includes a bleeder kit and plugs for the ports you don't use.
The bolt pattern is 3 3/8" in a square pattern.
A DISC BRAKE COMBINATION VALVE IS A NECESSITY WHEN YOU ARE DOING A DRUM TO DISC CONVERSION. THE COMBINATION VALVE WILL PROVIDE ALL THE VALVING NECESSARY IN THE SYSTEM.
THE VALVES WE PROVIDE WILL PERFORM FOUR FUNCTIONS:
PROPORTIONING
PROPER PROPORTIONING IN A DISC/DRUM SYSTEM WILL PREVENT THE REAR DRUM BRAKES FROM LOCKING UP UNDER A HARD BRAKING CONDITION. AS MORE FORCE IS APPLIED TO THE BRAKES AND THE CAR LEANS FOWARD, LESS BRAKING FORCE IS NEEDED IN THE REAR. THE PROPORTIONING FUNCTION OF THE VALVE WILL DECREASE THE PRESSURE TRANSFERRED TO THE REAR PREVENTING REAR LOCK UP. PROPORTIONING FOR A DISC/DISC SET UP IS DIFFERENT FROM THAT NEEDED FOR A DISC/DRUM SYSTEM. THE 4 WHEEL DISC VALVE HANDLES THIS CORRECTLY.
METERING
METERING IS USED IN THE FRONT DISC BRAKE PORTION OF THE DISC/DRUM SYSTEM TO DELAY THE APPLICATION OF THE FRONT DISCS SLIGHTLY ALLOWING THE SLOWER REACTING DRUM BRAKES TO CATCH UP AND CONTRIBUIT TO THE BRAKING. THIS WILL PROVIDE REAR STABILITY ON WET SURFACES AND PREVENT EXCESSIVE FRONT PAD WEAR. THERE IS NO METERING PORTION OF THE COMBINATION VALVE FOR A DISC/DRUM APPLICATION.
RESIDUAL PRESSURE
DRUM BRAKES WILL REQUIRE A RESIDUAL PRESSURE OF 10 LBS BE HELD IN THE LINE. THIS PRESSURE WILL KEEP THE BRAKE SHOES OUT CLOSE TO THE DRUMS GIVING YOU A HIGHER,FIRMER PEDAL FEEL. THE COMBINATION VALVE WE USE INCORPORATES THIS TO THE REAR. THERE IS NO RESIDUAL VALVE IN A DISC/DISC COMBINATION VALVE.
SYSTEM FAILURE WARNING
OUR COMBINATION VALVE INCORPORATES A SYSTEM FAILURE SWITCH WHICH WILL ALERT YOU WHEN ONE HALF OF YOUR BRAKING SYSTEM IS NOT FUNCTIONING PROPERLY.
Every component in this kit is brand new, not remanufactured or rebuilt.
Check our other auctions for great deals for your street rod, muscle car, truck, classic car or any custom project.
PB7537/MC1321/PV2 + bottom mt bracket & line kit
We prefer instant payments from Paypal or credit/debit card payments by phone. You can call us at 563-823-4871 M-F CST with your Visa & MasterCard (debit or credit) or Discover.
We will combine shipping on multiple purchases when we can ship items together. You will need to wait for us to send you a (non ebay generated) combined invoice before making your payment.
To avoid non-paying bidder warnings, please pay for any auctions you win within 10 days or call 563-823-4871 M-F CST for extension.
Most orders will ship within 1-3 business days of payment receipt unless otherwise noted in the eBay listing (see shipping details). We email tracking numbers on most items when we ship. For items that ship economy shipping or that we ship factory direct, a tracking number won't be sent.
Stated shipping rates apply ONLY to the continental USA ~ lower 48 states.
We will combine shipping on most items as long as they can ship together without causing damage to some of the parts are not too big or odd shaped. Buyer must wait for an invoice for combined shipping discounts. We will not combine shipping if you pay for your items separately or on different dates.
If an item is on back order from our suppliers, a rain check can be issued by our office with the shipping discounted for your inconvenience.
For tracking information please call our shipping office at 319-988-4045 M-F 9-5 CST.
Iowa sales tax (7%) is required for IA residents unless a sales tax exemption form is faxed to our office.
California sales tax (8.75%) is required for TCI front & rear suspensions/parts shipped to CA unless a sales tax exemption form or export bill of lading is received by our office. Call Karen at 563-823-4871 M-F CST for assistance.
We will accept returns on merchandise that is in brand new, and uninstalled condition, for exchange or store credit only.
Buyer is responsible for all shipping and handling charges.
Returns must be made within 14 days of receiving the item.
All returns must be approved by our shipping office and receive an RMA number before returning an item ~ call 319-988-4045 M-F 9-5 CST for assistance.
We are Gearhead Enterprises ~ a National Street Rod & Muscle Car Parts Supply Company.
Parts are added to our store weekly so check often for new items and the latest deals!
Plus, we have access to thousands of parts that are not listed and may be in stock in our warehouse. We can also special order parts in from our suppliers to suit your specific custom needs.
If you need parts that you don't see in our listings or need us to make a change to an active listing, please email or call (563) 823-4871 M-F 9:30-5 CST for assistance.
We can setup a custom listing for the products you need!
Please email questions or concerns to us through the ebay item number "contact seller" link. We get hundreds of emails daily so at times it may take us up to 72 hours to respond to your emails.
If you need a faster response, please call our Gonefishing69 site manager & parts tech Karen at (563) 823-4871 M-F 9:30-5:00 CST for assistance.
Thank you!
