Technician Reference

A free reference library for classic-car technicians. Browse a preview of each chart below — every full chart and the searchable reference are free with registration. Safety guidance is always provided in full.

Safety

• Safety Precautions

Conversions

• Millimeters to Inches Conversion
• Fraction to Decimal
• Torque Conversions
• Temperature Conversion
• Fluid Equivalents
• Pressure Conversion
• Wire Gauge Reference
• Drill Bit Sizes
• Standard Bolt Torque
• Tap Drill Chart
• Weight Conversions

Diagnostics & Tests

• Compression Test
• Vacuum Gauge Diagnostic
• Battery & Charging System

Classic-Car Specific

• Firing Orders
• Spark Plug Heat Range & Gap
• Engine Oil Viscosity & ZDDP
• Brake Fluid Compatibility
• Wire Color Code Conventions
• Tire Size Cross-Reference
• Refrigerant Reference
• Loctite & RTV Selection

Reference

• Glossary & Abbreviations

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