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Check Out The Dodge Demon Teaser Video

The key to increasing the power output of the Challenger SRT Demon’s supercharged HEMI, or any engine for that matter, is a function of how much cool air you can get in the engine.

Tricking Out Bryce Menzies’ Pro 2 Truck For Long Distance Flight

In its race form, Bryce Menzies’ 900 horsepower Pro 2 off-road truck is a force to be reckoned with. But on August 27, Menzies will launch the truck over a ghost town, looking to exceed the current truck jump distance record of 332 ft.

Checking Catalytic Converter Efficiency

The converter has an efficiency rating that is computed by the vehicle. This number rates the amount of reduction that is occurring in the converter and its ability to store oxygen.

Ball Joint Engineering: Greasable And Sealed

One of the most frequent questions from my undercar customers is in regards to the availability of “greasable” chassis parts. Sealed-for-life components are very common at the OEM level, but many technicians have a definite preference for aftermarket greasable components. This poses the question: If greasable suspension joints are so popular, why don’t many modern suspensions have grease fittings anymore?

Coolants Can Lose Their Ability To Protect The Engine

Coolant at 100,000 miles may look the same as coolant with zero miles. The real difference between good and bad coolant can’t be seen with the naked eye; it is in the chemistry.

Engine Bearings Under Pressure

Engine bearings have to withstand punishing loads in today’s engines. Smaller displacements, turbocharging and higher horsepower ratings mean crankshaft and connecting rod bearings are being subjected to heavier loads. This has led to the development of some new bearing alloys and coatings that enable these parts to survive.

Converter Codes: How Long Will The Light Stay Out?

Even if the converter is operating below 95% efficiency or the oxygen sensor is bad, the chances of the light coming right back on are slim. If you clear the code, the light might stay off for a while until the system goes through two readiness cycles. This might take a couple of days or a couple of weeks. But, no good deed goes unpunished because the customer will be back and your quick fix will be forgotten.

Intermittent Engine Misfire Analysis

Even for an experienced diagnostic technician, ­attempting to diagnose an intermittent misfire ­condition that occurs only under specific driving conditions can be a frustrating exercise. Let’s begin by getting the basics out of the way. As we know, the general causes of a misfire fall under the ­general headings of 1.) ignition, 2.) fuel density, 3.) compression and 4.) timing failures.

Engine Coolant Temperature Diagnostics

While old-school cooling system service often ­focused on coolant leaks and overheating engines, let’s begin thinking “new-school” by looking at modern cooling systems through the eyes of the engine coolant temperature (ECT) sensor.

Engine Series: Rebuilding Liberty

Notes on Jeep’s 2.4L I4 Engine