Autolite Introduces XP Xtreme Performance Iridium Plugs - Engine Builder Magazine

Autolite Introduces XP Xtreme Performance Iridium Plugs

For engine builder who have made modifications to an engine, they should refer to their component manufacturer’s specifications and/or contact the experts at Fram Group at www.autolite.com

Company: FRAM Group
www.autolite.com

Autolite XP Xtreme Performance Iridium enhanced spark plugs are one of Autolite’s most technologically advanced spark plugs ever.

With an iridium-enhanced 0.6 mm finewire design and proprietary V-trimmed platinum sidewire technology, these spark plugs provide better durability* and a more focused ignition for better overall ignitability** and optimal performance.

 

Importance of Heat Range with Performance Engines
Racing Modified Engines – Generally, any engine modification that alters the overall compression ratio of the engine will involve spark plug selection issues. One thing to consider is heat range.

The heat range of the spark plug determines how much heat the spark plug is capable of removing from the combustion chamber. The heat range of the spark plug does not increase or decrease horsepower. It changes the temperature of the tip of the spark plug. If the heat range is too cold, the deposits will not burn off the tip and the spark plug will foul. If the spark plug heat range is too hot, pre-ignition can occur.

A switch in heat range of the spark plug will change the temperature of the spark plug tip by 70-120 degrees. If you are unsure of the correct heat range to use, always start with a colder spark plug. If the plug is too cold, the plug will eventually foul and a misfire will occur. This will not hurt the engine. Unfortunately, though, if a spark plug that is too hot is inadvertently chosen, pre-ignition and detonation can severely damage your engine. Don’t go to a hotter heat range unless you’ve consulted your engine experts.

As there are many different ways to modify your engine for racing applications, we can’t tell you here which specific spark plug to use. If you have made modifications to your engine, you should refer to your component manufacturer’s specifications and/or contact the experts at Fram Group at www.autolite.com

*Compared to 0.8 mm finewire, multi-electrode design and standard plugs.

**Compared to average of other premium brands.

You May Also Like

AMSOIL 0W-8 100% Synthetic Hybrid Motor Oil

This new 0W-8 viscosity is engineered for applications calling for the JASO GLV-1 specification.

AMSOIL hybrid oil

AMSOIL 100% Synthetic Hybrid Motor Oil is now available in a 0W-8 viscosity, joining existing 0W-16 and 0W-20 viscosities in the AMSOIL 100% Synthetic Hybrid Motor Oil product line. This new 0W-8 viscosity is engineered for applications calling for the JASO GLV-1 specification such as newer Toyota Corolla models equipped with the 2.0L (M20A-FKS) engine. 

Crower EnduraMax Roller Lifters

Available in all popular sizes and comes standard with Crower’s High Pressure Pin Oiling to help keep the roller and shaft lubricated.

Crower roller lifter
Point One Chevy Oil Pump Stud Kit

Point One manufactures high-strength critical engine fasteners for aftermarket automotive, racing, and other demanding applications.

P1 Chevy oil stud kit
King HP- and XP-Series Rod and Main Bearings

King Bearings’ HP- and XP-Series bearings are available in standard size and a wide range of over- and undersizes for popular V8s.

HP-series bearings
SPA Performance Toyota/Lexus 2JZ-GTE T4 Turbo Manifold

Now in the top mount twin scroll version and with V-band 44mm wastegate flange, ensuring maximum flow and boost control.

SPA Performance turbo manifold
Other Posts
Hot Shot’s Secret Red Diamond Ultimate Motor Oil

Red Diamond Ultimate Motor Oil is available in three viscosity weights — 0W-20, 5W-20 and 5W-30.

Hot Shot's Secret Red Ultimate motor oil
COMP Cams Thumpr and Mutha’ Thumpr NSR Camshafts

The Thumpr NSR camshafts are a perfect choice for near stock to mildly modified engines. The Mutha’ Thumprs work best in modified naturally aspirated and supercharged engines.

COMP Thumpr camshafts
PAC 1.500” Dual Valve Springs

PAC’s 1.500” dual valve springs offer higher spring rates and lighter spring/retainer packages allowing for more rpm, lighter seat loads and better dynamics.

PAC dual spring
FAST XR Series Ignition Coils for 5.0L Coyote Engines

The XR Series coils are direct replacements for the factory coils and have premium, ultra-pure copper alloy windings.

FAST ignition coils