Lynn - your 3362 master cylinder is rebuildable. Strange sells kits, around $50. Dragster brakes are different than a passenger car. They are not going to last 75,000 miles plus. Due to extreme pressure and the resulting heat from high speed stops, you do need to inspect your master cylinder and calipers if you experience brake issues. The usual fix requires replacing o-rings and seals.
However, with the few number of runs that you and your driver have done the past year, and your description of the bent master cylinder pushrod, you may have a different issue with the master cylinder that is causing your problem.
Below information is from the Strange Brakes Website; maybe check your pushrod linkage alignment to see if your master cylinder has primary piston skirt damage. Happy Easter! Alan
Primary Piston Inspection: The primary piston needs to be inspected. The piston skirts and faces highlighted in red should be carefully inspected. If the push rod linkages are misaligned and the pushrod is being engaged at an angle, the piston is forced to rub against the master cylinder bore surfaces. This will result in shiny spots or in extreme cases deformation of the skirt towards the front of the piston. If there is evident damage of the piston skirts the master cylinder bore should be inspected. Furthermore, the brake linkages should be corrected so they’re in line with the pushrod prior to master cylinder reinstallation.
Master cylinder bore inspection: It’s vital to inspect the master cylinder bores for wear, scoring and deposits. Discoloration or shiny spots in the bores are acceptable. Scoring should be felt by the finger. Generally, if the depth of a score catches the finger as it’s glided across, the master cylinder body is not acceptable. Scotch brite can be used to gently scuff out any minor scores. Scores will cause fluid to seep past the cup seals and inadequate to no brake pressure to develop. If the master cylinder body is found to be unacceptable, please contact Strange Engineering. After inspection the master cylinder bores and body should be cleaned with brake cleaner and dried prior to reassembly.
