Jack Bros. Specialised Automotive Machining
Engine Cylinders


Jack Brothers is the one-stop-shop for all your performance machining requirements. With over 30 years experience and the latest technology, our ongoing commitment to quality means you get more horsepower for your dollar.

Machine ShopWe provide machining services to a range of motorsports and car enthusiasts:

RottlerAnd with our in-house dyno, flow bench and cam analysis system we can help you maximise the horsepower potential of your combination. We also continue to invest in the latest technology so you get unsurpassed quality and peace of mind that your job will be done right the first time.

Conrod & Piston


  • Boring and honing
  • Torque plate honing
  • Head and block repairs
  • CNC machining
  • Block and cylinder head O’ringing
  • Lifter-bore sleeving
  • Piston machining
  • Cylinder head work
  • Cam tunnel boring for roller cam bearings
  • Balancing
  • Rod sizing
  • Re-sleeving
  • Crack testing
  • Sonic testing
  • Hot tanking