If you decide to make a size change in master cylinders to affect the brake balance, keep your old cylinder just in case your balance situation changes. You may change the master size and then find that you have been using the wrong pad compound at either end of the car. Then you may have to go back to your old size masters.

E. Brake Lines Now would be a good time to replace all of your brake lines, especially the flexible lines. With steel lines, moisture accumulation in the fluids will promote rusting of the inner walls of the brake lines. There's no fix for this other than to replace the lines.

If you have stripped the car in the off-season, it will be easy to remove and replace the brake lines. As we said earlier, choose your routing carefully and note where there may have been conflicts or contact before and avoid those areas.

F. Brake Fluid Brake fluid absorbs moisture quickly. Do not leave the top of a brake fluid container open for more than a few seconds. Moisture causes expansion of the fluid and possible brake failure under high heat conditions.

Use containers designed specifically for bleeding brakes so you can pump the fluid through the system to remove all of the air completely. Use new, quality fluid designed for racing. Passenger car fluids are not designed to handle the high temperatures that are generated in a race car.

G. Timing The timing for when you will assemble and load your brake system is important. You might want to run that new line and mount the master cylinders once the chassis has been cleaned and painted, but completing the installation might be best left to the end of the car build.

One of the last things you should assemble on your race car is the brakes. Install the calipers, connect the brake lines and fill the system toward the end of your complete car maintenance. That way, when you're installing the rearend, motor, tranny, control arms, spindles, and so on, you will not damage the brake system. Just remember to cap the ends of the lines and the master cylinders to prevent dirt from getting in while the rest of the car is being put together.

Conclusion I can't stress enough how important it is to consult your favorite brake manufacturer's tech people when designing your system, replacing parts or having a problem that is brake related. These people are a wonderful resource and they talk with hundreds of racers a year. Their level of knowledge can't be matched by most racers, no matter how long they've been in the game. They can make you aware of new processes, new parts and better brake pad developments.

This flexible brake line is at the right rear of the car and it shows a kink where the rearend was allowed to drop and pull on the brake line. It's this kind of hidden damage that can cause problems. When you're under the car or looking inside the wheel well with the wheel off, try to notice things like this. When I look over a team's car, these are the things I try to look for and alert the team about.

You can also go over other parts while you have the hub off the spindle. This is a really nice brake cooling hose bracket manufactured by Coleman. It bolts/clamps directly to the spindle and directs the cooling air into the center of the rotor where it does the most good.

AFCO/US Brake Outlaw Brakes
Coleman Racing
Dept. SCR11
MI  49858