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Tech Talk with Master Power Brakes

The Classic Car Brake Booster Troubleshooting Guide and FAQ

Posted by toby on Nov 5, 2014 10:38:41 AM

The introduction of disc brakes made vintage cars from the late 60s and early 70s safer, but this technology created a new set of challenges for automotive engineers.   Although disc systems are less susceptible less susceptible to brake fade due to heat or water and they do not drift out of adjustment like older drum brake systems, they operate at high fluid pressures, and without a booster, more foot pressure is required to bring the car to a stop.  Put another way, the new technology created one more component to consider when upgrading your brakes—and another area to include in your diagnostic checklist when things go wrong.  If you are contemplating installing a brake booster or need to troubleshoot an existing booster system, check out the Brake Booster FAQ found in our website’s reference area.

Here are some common questions answered by our Brake Booster FAQ:

  • What does a brake booster do?
  • Do I need a power booster if I install disc brakes?
  • How do I know if my brake booster is going bad?
  • How much pressure should I get to the wheels with a power booster?
  • What size brake booster do I need?
  • Can I use a Ford or MOPAR Brake Booster on a GM vehicle?
  • How much vacuum is needed for the booster to operate correctly?
  • Can I use my power drum brake booster if I change to disc brakes?
  • I have installed a new booster and my brakes are dragging.  Why?
  • I just installed power brakes on a original manual brake car and now the brakes are extremely sensitive.  Why?
  • Can I rebuild my own booster?

If you are looking for answers to these common brake booster questions and more, be sure to check out our FAQ.  As always, if you still have questions, or if you have an issue not covered by the Brake Booster Troubleshooting FAQ, give us a call and we’ll gladly lend a hand.

Topics: Boosters, Brake Booster, classic cars, drum brakes, Vintage Cars, Disc Brakes

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