Big cams can wreak havoc in a vehicle with a power brake booster. The bigger the cam, the lower the vacuum number. Inherently, the lower the vacuum number the harder the brake pedal is to press. This doesn’t have to be the case. With our Silent Drive Vacuum Pump, you can remove the engine from the equation and use our stand alone pump to provide the vacuum necessary to properly run a vacuum brake booster. The drawback to a vacuum pump has always been the noise. With the use of our OEM quality rotary style motor, noise is a thing of the past.
What is a Bellcrank Assembly?
How a power brake conversion mounts to the firewall can be more than what you might think. We recently had a customer that wanted to mount his booster directly to the firewall and didn’t understand why he couldn’t do that and why the bracket assembly we use is necessary. We take it for granted but in thinking further about it, we thought we might need to explain. On a lot of our applications, we use a bracket assembly between the booster and the firewall that we commonly refer to as a bellcrank assembly. At first glance, it looks like a simple method of locating the booster on the firewall however there is much more to it than that.
Twice a year the automotive restoration world along with collector car enthusiasts from every corner make Concord, NC and in particular Charlotte Motor Speedway home for an extended weekend. People with every interest imaginable attend to see, buy and sell exceptional vehicles, restoration parts and supplies including many unique items found only at this event.
No matter what the business is, if you just sit around and don’t make any improvements, your products are going to fall behind and become irrelevant. We recently realized that we were falling into that situation with our Ford Truck and Chevrolet Truck Rear Disc Brake Conversion Kits. Not long ago, we had a situation come up that forced us to look at these kits and after a hard look, we determined it was time to make some changes. But we didn’t want to make changes just to be making changes. We wanted better and we wanted more!
A common problem and a question we answer more than we can remember is “Why does my pedal feel soft?” in my power brake system. One of the most overlooked things is probably the simplest fix.
Extending out of the booster is a pin. This pin simply extends into the piston in the back of the master cylinder. Have you ever set this distance? If you answered no, not only is this something you must do, it may be the reason for your soft pedal. Have we confused you? Take a look at the picture below and see if this helps.