What spark plugs do racers use?

For many years NGK Spark Plugs has been firing racing engines throughout the world. NGK Spark Plugs has become an icon in spark plug technology and we pride ourselves in offering racers a high quality product that will help rocket them to victory. We realize race teams push their vehicles to the edge.

Which Autolite plug is hotter?

Autolite indicates the heat range with the last digit of the part number. For example, 3923 has a heat range of 3. The higher the number, the hotter the plug. The lower the number, the colder the plug.

What do racing spark plugs do?

Racing spark plugs for cars or motorcycles have been developed for fine-tuned engines designed to achieve maximum power under racing conditions. Unlike standard spark plugs, racing plugs prioritize performance and durability at peak speeds–often at the expense of efficiency at low-speeds.

Do Autolite spark plugs need to be gapped?

Autolite® and all spark plug manufacturers offer spark plugs pre-gapped in the most popular gap sizes. Because of the many gap sizes required, no one offers spark plugs properly gapped for every application. Gapping has always been the job of the installer.

Do racing spark plugs make a difference?

There are some distinct differences between racing spark plugs and regular ones. Racing spark plugs can withstand greater amounts of mechanical shock, in addition to greater amounts of thermal shock (temperature changes). The electrode design in a racing spark plug is constructed to enhance “sparking”.

What happens when you run too hot of a spark plug?

If the tip of the spark plug is too hot it can cause pre-ignition leading to detonation/knocking and damage may occur. If it is too cold, electrically conductive deposits may form on the insulator causing a loss of spark energy or the actual shorting-out of the spark current.

Can you gap Autolite double platinum spark plugs?

Check and set the gap on new plugs as recommended in your owner’s manual or a Spark Plug Catalog. Use a round feeler gauge to measure the gap between the center and ground electrode. The gauge should pass through snugly but easily. If it’s too loose or too tight, reset the gap.