New Car Brakes

[bobcowan]

This car is a street car only. Just for fun. But, being a racer, I really want good brakes. These don't seem to work as well as my truck. For power brakes, they really are disappointing.

When I get time I'm going to check the vacuum line. I'm wondering if there just isn't enough vacuum to run the brakes. Makes me wonder if I can simply add a big reservoir, or if I need a pump and reservoir.

[jhv48]

Is the car an FFR? The reason I ask is because you list your car as a FFR with a 427, but placed the thread in the Backdraft racing section.
Do you now have a backdraft cobra?
What vacuum are you pulling with is engine?
A low vacuum pulling engine can greatly reduce the effectiveness of power brakes that depend on engine vacuum for full effectiveness.

[bobcowan]

Originally Posted by jhv48

Is the car an FFR? The reason I ask is because you list your car as a FFR with a 427, but placed the thread in the Backdraft racing section.
Do you now have a backdraft cobra?
What vacuum are you pulling with is engine?
A low vacuum pulling engine can greatly reduce the effectiveness of power brakes that depend on engine vacuum for full effectiveness.

Good point! The FFR burned two years ago. I'm working on a
Backdraft now. I forgot to change that. In all this time, you're the first one to notice.

I was going to use a reservoir. Cheap, simple. But, there's almost no vacuum at the port. I was afraid that if I needed the brakes a lot, like stop and go driving, I'd run out of vacuum. I ordered a vacuum pump from Master Power Brakes.
https://www.mpbrakes.com/accessories...m-pump-kit.asp

[cycleguy55]

Originally Posted by bobcowan

This car is a street car only. Just for fun. But, being a racer, I really want good brakes. These don't seem to work as well as my truck. For power brakes, they really are disappointing.

When I get time I'm going to check the vacuum line. I'm wondering if there just isn't enough vacuum to run the brakes. Makes me wonder if I can simply add a big reservoir, or if I need a pump and reservoir.

If you're not running a reservoir you should add one. Don't forget a proper check valve(s) to hold vacuum in the reservoir.



Article here on installing a vacuum pump, including diagrams showing check valves: https://www.powerperformancenews.com...acuum-booster/