Valvoline.com

Exhaust

• Emission-Carb Rebuild

  Some 1980s emissions carburetors are horribly complicated, and require a bit of head scratching to sort out all the widgets. Fortunately, most of the rebuild job is a tabletop affair; although, it's... Read More

• Mustang GT350 Restomod 4

  Having covered the mods on the drivetrain, chassis, and interior of Dan Holm's GT350-style conversion of a '67 Mustang, it's time to take a look at the tweaking directed at the exhaust system. As... Read More

• Exhaust Hanger Replacement

  Most General Motors musclecar exhaust systems are secured to the underside of the vehicle with exhaust hangers. These metal brackets are attached to pieces of rubber, which flex and allow the pipe to... Read More

• Exhaust Manifold Restoration

  For years restorers were at a loss about what to do with cast-iron exhaust manifolds. A few restorers of large, expensive classic cars would send their manifolds out to be coated with porcelain.... Read More

• Performance Exhaust Headers

  If you think of your vehicle's engine as basically a big pump, the need for free-flowing exhausts becomes obvious. Air in, air out—that's what it's all about.... Read More

• Turbo Exhaust Headers

  The beauty of a turbocharger is that it makes use of wasted energy thrown away by the engine, the pulses and pressures of the exhaust gasses. The exhaust flow spins a turbine wheel that shares an... Read More

• Exhaust X-Pipes

  It's a proven fact that joining the exhaust pipes of multi-cylinder engines improves power and torque over a broad rpm range. A "tuned" set of exhaust headers (with pipes of calculated diameter and... Read More

• Easy Exhaust Upgrade

  Performance enthusiasts know that one of the best ways to increase horsepower—especially in computer-controlled vehicles—is with a less-restrictive exhaust system. Because any components... Read More

• Exhausting Possibilities

  Except for thinly disguised factory-built racecars like the Corvette Z06 or Mitsubishi Lancer Evolution, most automobiles leave the assembly line with engineering built into the exhaust system,... Read More

• Smog Test Prep, Part 2

  In our first installment on getting ready for an emissions exam, we covered the many splendid facets of smog check and its application to your vehicle. We also touched on the first part of the test:... Read More

• Smog Test Prep, Part 1

  Nobody likes to fail a test, even if it's just the emissions check on your vehicle. For those of you who have been traumatized by, or wish to avoid the trauma of failing a Smog Test—we have good... Read More

• THE ABCs of EGR, Part II

  In part one of this feature on the EGR system, we covered both the development and the basic theory behind its operation. Now we'll get into some important information you'll need to know in order to... Read More

• THE ABCs of EGR, Part I

  Unless your vehicle fails an exhaust emissions test due to a high NOx reading, you probably haven't needed to know much about your vehicle's EGR (Exhaust Gas Recirculation) system. That's... Read More

• Troubleshooting by Smell

  In our first article, we established that your car "talks" to you in a variety of ways, and covered how to use your sense of sight to diagnose mechanical problems. Now how about smelling your car?... Read More

• Catalytic Converter Replacement

  To car enthusiasts, catalytic converters are often viewed as a government conspiracy to limit horsepower. This is because catalytic converters are the least-understood emissions-system component. In... Read More