Articles from SRT-Tom

  1. Exhaust Backpressure

    This YouTube video explains exhaust backpressure, exhaust scavenging and turbo pressures.
  2. Car Batteries

    Almost all of today’s car batteries are "maintenance-free." However, your battery should be load-tested annually once it is 2 years old if you live in a warmer climate, or 4 years old if you live in a colder climate. Doing so tests its ability to hold voltage while being used, and the results will let you know when it’s time to start shopping. In addition, it is a good practice to check the terminals to ensure that the connectors are tight and free from corrosion. Car batteries typically...
  3. How does MDS Work?

    The following Motor Trend article, describes in detail, how the MDS system works. What Is Hemi MDS? (motortrend.com)
  4. Timing

    In older automobile ignition systems, the high-voltage pulses are produced by means of breaker points controlled by a revolving distributor cam. When the points are in contact they complete an electrical circuit through the primary winding of the ignition coil. When the points are separated by the cam, the primary circuit is broken, which creates a high-voltage surge in the secondary windings of the induction coil. Breaker points have been largely replaced by electronic devices in newer...
  5. Pulling Fuse #2 and Adaptives

    HERE'S WHAT HAPPENS WHEN YOU PULL #2 FUSE (older Challengers) Pulling Fuse F2 resets: All PCM DTCs erased. All OBD2 monitor results erased. All "long term fuel trim adaptive" values reset to Zero. Long term Fuel Adaptive trim will now start over the next 100 engine start cycles. Cycle the headlights as described above will create a Short Term Fuel Adaptive trim table over the next 50 start cycles. Driver Adaptive? Driver Adaptive and related fuel table trim is probably the least...
  6. EV Charging & Battery Life

    Electric cars need to be recharged frequently for efficiency. However, charging an electric car is a much different experience than refueling a gas or diesel vehicle. Instead of a few minutes, charging an EV can take anywhere from 30 minutes to over 30 hours. This is because there are actually three levels of electric car charging. Levels of Charging NeoCharge provides a breakdown of the three levels of EV charging. Each level of charging is defined by the amount of voltage, which...
  7. Featured

    Proper Tire Pressure in Cold Weather

    It’s known that when the temperature decreases by 10 degrees, tire pressure drops between 1 and 2 pounds per square inch (PSI). It happens not because the air escapes from the tire but because the air inside the tire starts condensing as the temperature decreases, and then it takes up less space. This is how the tire becomes under-inflated. This problem is seen mostly in the winter mornings because the car is parked all night and the air condenses. When the tires are properly inflated, and...
  8. Paintless Dent Repair

    Paintless Dent Repair (PDR) is an environmentally friendly repair method that restores a vehicle’s body to factory-like condition in a fraction of the time at a fraction of the cost. PDR can be used to remove dings and dents from vehicles, as well as creases and hail damage, as long as the paint is not chipped or cracked. Overall, PDR is an excellent alternative to traditional repairs. Each day, PDR technicians across the country safely restore vehicles to their original factory condition...
  9. Does Motor Oil Expire?

    If you change your own oil, the chances are you’ve got some old engine oil on your shelf. Likely it’s nothing more than an opened 1-liter top-up bottle, or an unused 4-liter bottle. You then wonder, "Does motor oil expire?" WHAT DO THE OIL COMPANIES SAY? There is a general consensus of terminology coming from the oil companies that unused, unopened, and stored in its original container out of extremes of temperature, motor oil will last for an “extended period”. They then go on to suggest...
  10. Featured

    Windshield Dots

    The small black dots on a car windshield are called frits, which are black painted enamel that’s baked onto the surface of the glass. Modern cars have a windshield bonded to the frame. He described how the windshield is bonded using a strong and long-lasting urethane adhesive, which makes the windshield a structural component of the vehicle’s body. The frits “provide a secure point of contact between the glass, urethane adhesive, and windshield frame. Essentially, the small black dots help...
  11. Blind Spot Monitoring

    What is Blind-Spot Monitoring? Blind-spot monitoring one of those features we didn’t know we needed or wanted until carmakers began offering it. Volvo was the first, incidentally. It offered its Blind Spot Information System (BLIS) for the S80 in 2005. BSM is just what its name implies. It keeps an eye on the space just off the rear quarter areas of your vehicle. These blind spots can hide a vehicle approaching in an adjacent lane because many drivers improperly set their car’s outboard...
  12. Li-Ion Batteries

    We are now entering the electric car age. These vehicles are powered by Li-Ion batteries. This type of battery is energy dense and durable. However, it can also be unstable and prone to catching fire under certain circumstances. But not all Li-Ion batteries are suited for vehicles. How Do They Work? Lithium ions store the energy by creating an electric potential difference between the negative and positive poles of the battery. Those are isolated using a separator material to prevent...
  13. Featured

    Prochargers

    In a previous article, superchargers and turbochargers were discussed in detail (see link, below). Superchargers vs. Turbochargers | Dodge Challenger Forum Anyone who goes to the track, or watches the cable TV show, Street Outlaws, knows that many knowledgeable racers are going to prochargers. In fact, Ryan Martin, switched his Fireball Camaro from twin turbos to prochargers. Watch his interview at the 2:30 minute mark. Prochargers, superchargers and turbochargers are all different...
  14. Wind Tunnels

    When most people think of wind tunnels, an aerospace tunnel usually comes to mind. This helps designers and engineers understand how aircraft will behave during various flight conditions. Automotive wind tunnels are usually very similar to aerospace tunnels, but they often feature a rolling floor that lets test engineers simulate a car driving on the road at various speeds. What are Wind Tunnels? Wind tunnels are large tubes with air blowing through them which are used to replicate the...
  15. Security Devices

    As you know, there has been an ongoing problem concerning the theft of high performance Dodge cars, notably Hellcat and Scat Pack Challengers and Chargers. Security devices are now more important than ever. They can be categorized as follows deterrent devices, anti-theft devices and tracking devices. Deterrent Devices Alarm System Alarm systems are only effective in areas where they will attract immediate attention. And unless the alarm is unique, it will be ignored. If you want to add...
Loading...