Rear brake pressure for drum brakes.
 

Looking for advise on how much rear brake pressure to run safely on rear drum brakes.I have an adjustable proportioning valve in the rear line.

Re: Rear brake pressure for drum brakes.
 

Cut and pasted from the Strange Engineering website:


You should be able to achieve 950-1200 psi on the rear brakes and 700-800 psi on the front brakes. Usually, more brake pressure is used for the rear brakes, since in most drag racing applications, the rear tire has a much larger contact surface (with the pavement), when compared with the front tire; however, builder and driver preference may influence the choice of brake bias.

Re: Rear brake pressure for drum brakes.
 

Keep an eye on rear backing plate mounting holes, they will stretch in time from holding rear tires while two stepping.

Re: Rear brake pressure for drum brakes.
 

That adjustable valve just affects flow. It will not adjust the pressure. It’s meant to adjust the bias on quick stops. It’s supposed to be installed on the line for the front brakes.

Re: Rear brake pressure for drum brakes.
 

I guess my main concern is making sure my back brakes are not going to lock up at the top end of the track