What Is the GM 8.1L, 8.8L PSI Exhaust Manifold Repair Kit?
The GM 8.1L, 8.8L PSI Engine Exhaust Manifold Broken Bolt Stud Repair Tooling Repair Kit, along with every other USA-made ProMAXX Tool solution, greatly reduces repair times, allowing professional vehicle technicians to quickly make the fix and move on to other jobs. The kit is easy to use, and it comes with instructions and schematics that show the best ways to mount the guide plate to get at every broken bolt on the manifold.
How Does the GM 8.1L, 8.8L PSI Broken Bolt Repair Kit Work?
Like all ProMAXX Tool broken bolt repair kits, the GM 8.1L, 8.8L PSI Engine Exhaust Manifold Broken Bolt Stud Repair Tooling Kit stands out for its exclusive screw-in bushings and proprietary mating angles, which ensure perfect alignment of the ProPlate jig with the cylinder head. The ProPlate can be bolted in any position with included precision fasteners, providing unparalleled repeatable and predictable results.
Tech Uses Broken Bolt Removal Kit to Remove Broken Tap
Tech uses Rocky II ProKit Plate and ProMAXX Tool Platinum Drill Bits to remove broken tap from botched exhaust manifold bolt repair. Once busted tap is gone, the Cylinder Head Repair Kit with black-oxide coated inserts restores the threads to better than Ford factory specifications.
Butch User Guide Info
Remove Broken Exhaust Manifold Bolt GM 8.1L, 8.8L PSI - Butch
- Mount the ProPlate™ to the cylinder head using the included ProFast PPF010625-125 or PPF010625-150 precision fasteners according to the included cylinder head schematic. Torque to a minimum of 20 FT-LBS.
- Insert the ProBushing™ and corresponding ProDrill™ machine grade tooling bit into an air-powered angled style drill and use the drill depth gauge machined into the ProPlate™ to set the proper depth of the bit and mark the bit if necessary. Apply one drop of the ProLube™ PPL001 drilling & tapping cutting fluid. AVOID PENETRATING OIL/SPRAY OR OTHER LUBRICANTS.
- Insert the mounted ProDrill™ into the included ProBushing™ mounted in the ProPlate™ first by slowly and manually turning the chuck until the ProDrill™ slips into the bushing and contacts the surface of the damaged stud. This will ensure the cutting edge is not damaged. Important step to avoid drill bit breakage. While applying light pressure, activate your drill both on and off five times (ten times if utilizing an air ratchet) in one-second intervals. This is the MOST CRITICAL step of this repair as it facilitates precise alignment by creating a “seat” for the tooling bit to stay on center and not follow the angular broken surface of the stud. Moreover, this step allows the surface of the stud to conform to the cutting edge of the bit distributing the load evenly across the entire cutting edge of the bit providing for cutting extremely hard surfaces and extending cutting tool life.
- After this initial start, drill continuously running your drill at the proper RPM (see below) and while the bit is turning, extract the bit in and out of the damaged stud while maintaining it in the bushing to “clean” or “excavate” cutting debris from the stud. Repeat this step progressively exerting more pressure until your drill reaches the maximum depth.
Begin the Extractorless™ Repair: Using the larger ProDrill™ and the corresponding ProBushing, drill continuously, regularly excavating chips and debris from the drill flutes. Repeat this step with your remaining drill steps. Clear all debris, insert the largest ProBushing™ and attach your tap holder to the ProTap™ PPT010125. Apply two drops of ProMAXX® ProLube™ to the tap. Insert the ProTap™ PPT010150 into the bushing, slowly and carefully turning the tap by hand first clockwise ¼ turn, then counterclockwise ¼ turn, blow down the flutes of the tap to clean debris frequently and repeat this process until the tap stops cutting.
You may also contact technical support at 855-464-6458 for recommendations and procedures.
NOTE. Approximate tooling cutting speeds (Under load): MIN: SSSC125@500 RPM, SSSC188/PLT188@300 RPM, SSSC270/ PLT270@250 RPM and SSSC340@250 RPM.
NOTE: Some air ratchets may not generate at sufficient RPM under load to be effective. SEE ProMAXX® ProRatchet PPR5260 or PowerDrill™ PPD2800 at www.miltonindustries.com for optimum efficiency and maximum productivity.
PROMAXX™ machine grade tooling is specially engineered to close tolerances of (+) .000” and (-) .001” and ground straight to ensure accurate and repeatable results in using your new device. Specify PROMAXX® genuine replacement parts and tooling for optimum performance and extended warranty coverage. Always use appropriate OSHA-approved safety glasses/goggle and protective gloves while using this device and performing this operation.
Butch User Guide PDF
