Directions: E15 — Helping or Hurting American Drivers?
At Issue: E15 fuel blends could be available by March or April of 2011, assuming the EPA makes two approvals for use of E15 in 2001 cars and newer models by the end of the year.
Tech Feature: The DeLorean – Back From the Past
The DeLorean was often referred to as “the ethical sports car,” leading to the relatively small V6 engine and stainless-over-fiberglass construction with good fuel economy and long life in mind.
Tech Feature: General Motor’s Ecotec 2.0L Turbo Engine
General Motors introduced its powerful Ecotec 2.0L direct
Tech Feature: Sports Compacts – Performing in a ‘Maturing’ Market
What started out in the 1990s as an affordable way for kids to bang around with cars that were often handed down from their parents or siblings, later grew into a fledgling market all its own.
Engine Tech Feature: Choosing the Right Fasteners for the Job
Some of the most stressed-out parts of a high-dollar
Cylinder Head Resurfacing Tips: How to Produce an Ideal Surface Finish
Always dress and true the resurfacer wheel face to keep it in proper grinding condition. Never dress or true a wheel above the wheel center line. In addition, always dress or true the wheel as close as possible to the point of actual grinding.
Tech Feature: Diagnosing Automotive Lab Scope Dilemmas
Although digital storage oscilloscopes or “lab scopes” have now become standard equipment for most modern automotive repair shops, they still possess a mystique that tends to intimidate many technicians. Right off the top, a lab scope is basically a voltmeter that displays voltage signals along a time base. The vertical scale measures the amplitude or amount of the voltage and the horizontal scale measures an incremental time line along which the signals are displayed.
Tech Update: Gaskets, Seals, Sealants and Fasteners
Some gaskets can go the distance, while others can not. The factors that typically cause a gasket to fail include age, heat, thermal expansion, abrasion, pressure, vibration, corrosion, material breakdown or poor design.
Tech Tip: 1987-93 Jeep 4.0L: Head Gasket Leaks/Seepage Found in Engines
Some vehicles equipped with a 4.0L engine, may experience engine oil leaks/seepage from the head gasket along the right-hand side (tappet rail) of the engine.
Tech Feature: Taking it to the Streets
We have all seen in our industry that a “streetable” racing engine or a “raceable” street engine appeals to a broad spectrum of potential engine buyers because of its flexibility. Yet, everyday street driving is not the same thing as serious drag racing.
Tech Tip: Honda’s V6 Engine Leaks Oil from Front/Middle/Rear
If oil is leaking from the front, middle or rear of one of the above engines, it may be due to the cast aluminum engine block may be porous in spots. Depending on the location of the leak, seal it with JB Weld or 3-Bond-coated sealing bolts.
Tech Feature: The Variables of Valve Timing
Today’s cylinder deactivation designs are used to reduce the fuel consumption and emissions of an internal combustion engine during light load operation.