Make a drill guide sleeve from steel or galvanized pipe.
Note: You can use several sizes of pipe to nest inside each other to get a better fit, lube them with a light coat of axle grease to reduce friction heating.
Use a half inch bit for the cutting.
Pre-measure the depth, and use a
drill stop collar.
The attached picture shows the safety margin to work within.
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__________________
ASE Master Mechanic
Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer
1985 300SD
1983 300D
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