Vintage Tire Size Conversion Chart

Use the following chart to figure out the closest modern tire size to your car’s original tires. Keep in mind these are close approximations and may not be exact replacements. Before purchasing any tires you should compare outside diameters and the tread footprint to get a better idea on how close a match they are. Your local tire dealer should have this information. Variations in tire... 

How to remove a stuck, rusted in or “frozen” Bolt

Here’s how to remove a “frozen” threaded fastener: Heat the stud red hot with an oxyacetylene torch (use neutral or carbonizing flame) immediately adjacent to the gasket surface. Tap the end of the stud with a hammer. Use a light blow. Let it cool to room temperature. This process causes the stud threads to break loose and shrink. You should be able to grab it with Vice-Grip... 

Vacuum Gauge Reading for Diagnosing Problems and Tuning Up Engines

My Dad showed my how to do this, and has helped me a couple times since then, so I figured I may post it on my web page. You’ll find this in most older “low tech” repair manuals.  Read More →

Testing an Automotive 12 volt Ignition Coil

How to check the 12 volt coil on your old car! Click here if picture above is too small or distorted.  Read More →

Measuring Wheel Bolt Pattern

How to measure a wheel bolt pattern the CORRECT WAY!! The bolt pattern or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs. Bolt patterns can be 4, 5, 6, 7, or 8 lug holes, however most applications are typically 4 or 5 lug. Bolt circles are measured in both inches and millimeters, therefore you may hear a bolt pattern referred to as both (i.e.... 

Holley Carburetor List Numbers

HOLLEY 4 BARREL CARBURETOR LIST NUMBERS AND STOCK JETTING/JET SIZES THIS A PARTIAL LIST OF HOLLEY LIST #’S FOR SOME OF THEIR MOST POPULAR CARBS. IT IS NOT A COMPLETE LIST OF ALL CARBS MADE BY HOLLEY OVER THE YEARS. I WILL ADD TO THIS PAGE AS MORE PART NUMBERS BECOME AVAILABLE. CLICK HERE FOR AN UPDATED AND EASIER TO READ VERSION OF THIS LIST # CFM STOCK JETTING POWER VALVE TYPE 1850-2 600 (F)66,(R)plate... 

Determining Fuel Sender Ohms

If you’re not sure of the fuel tank sending unit impedance, determine the resistance by following this method: Disconnect the fuel tank sender from the gauge. Connect an ohmmeter across the fuel tank sender. Connect the meters positive lead on the fuel tank sender’s output and the connect the ground lead to the fuel tank sender’s flange. Manipulate the position of the float...