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Can ProMAXX® Help? What suggestions do you have?


This is the most common call our technical support team receives. A challenging repair becomes increasingly frustrating without the right tool. To remedy, let’s first understand what may have caused the extractor to fracture. Naturally the torque requirements of the extractor were exceeded, but what we have found when studying hundreds of repairs is that the burr caused under tensioning the stud to break, turns the threads of the stud into a lock washer lodging the remnant into the head. Second, the corrosion inside the tapped hole caused when the piece of stud broke off leaving fresh aluminum exposed to unburned chemicals in the exhaust. This accelerates corrosion and it becomes crusty and physically blocks the threads making it much more difficult to remove the remnant.

These two cases aggravate the repair time and increase the stress on the extractor to fracture.

We recently introduced a newer version of our ever popular Rocky™ tool, now the 200 series, both in Ford gas only and Rocky™ II, 200 – compatible for both Ford Gas and the Ford/INT’L diesel engine. This new device features removable and interchangeable drill bushings that allow larger stepped drilling for more challenging repairs – especially the V-10 and diesel engines. To remedy this condition, simply bolt the new version in place and select the medium size bushing. Use a matching carbide bit and machine the extractor out of the head. Step to the next large size and remove all remaining fragments of the stud and follow with a high quality thread chaser. Follow this approach for the other stud as well.



Call our Support tech today at 724-941-0941

or 412-606-3300 or submit the form to the right






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