![]() Depending upon track length, oval track cars will typically improve lap times by 0.1 to 0.5 second once an optimized air intake system is installed. Paying attention to the inle tract design will pay off. A car will not pick up ET after the scoop is sealed off if the scoop is too short or the fuel delivery system is inadequate. It is not unusual for a drag race car to improve ETs by 0.3 second and increase top speed by as much as seven miles an hour after installation of a sealed scoop. An air bell or radiused intake should be used whenever possible to increase air flow into the carburetor. Air pan kits for sealing the carburetor to the scoop are available or they can be fabricated. Windshield snorkels are especially notorious for siphoning unless the rear is sealed. If air is forced past the carburetor it can siphon fuel, causing the engine to run lean. Otherwise, air will flow across the top of the carb and out of the inlet tract rather than into the air horn. When a hood scoop or external air intake is used, it is highly suggested that the carburetor be sealed to it. If an air cleaner is installed, the tallest possible element is preferred with four-inch element preferred for racing engines over 500 HP. There should be a minimum of three inches of clearance between the top of the venturis and a hood scoop. ![]() is approximately equal to a one percent power gain. A reduction in temperature of 10 degrees F. Under hood air is heated by the engine and headers and reduces the amount of power that can be produced. We recommend that a hood scoop or outside air intake should be installed wherever rules allow. This allows the engine to burn more fuel and make more power. The denser the air, the more you can get into the cylinders. Keeping restriction in the inlet path to a minimum - or better yet, pressurizing the air - is also desirable. Air Deliveryįor maximum horsepower, the coolest, most dense air possible should be available at the carburetor inlet. By ignoring these two critical areas, all the work of building a strong powerplant is wasted. There is no substitute for a well-designed fuel and air delivery system. If you can swing it, try to visit around the holidays when the city is spruced up in seasonal decor.Basic Carburetor and Fuel System Maintenance and Tuning Tips This is also a good time to save, since the winter attracts fewer tourists, meaning more bargain hotel rates. The city has had time to cool off (with average high temperatures resting in the 60s), and the springtime festivals haven't started yet. Winter marks a sweet spot in New Orleans tourism. ![]() Celebration in the Oaks (November-January).Voodoo Music + Arts Experience (October).Crescent City Blues & BBQ Festival (October).However, less stifling weather and plenty of cultural events make the Big Easy more enjoyable to visit at this time than during the summer. You should still keep an eye on the weather report: Late August and September mark the height of hurricane season (which poses a threat from June to November). Hotel rates are still low, and average high temperatures fall back into the 80s and mid-70s. New Orleans Wine & Food Experience (June)Īutumn offers a reprieve from the heat, and is a nice time to visit.This is also the rainiest season, so make sure to pack an umbrella. Average high temperatures hover in the steamy low 90s, making it somewhat uncomfortable for foot tours. New Orleans Jazz & Heritage Festival (April-May)Īs summer sets in, tourists flee from the heat and humidity, leaving behind a trail of outstanding deals on hotel rooms.Tennessee Williams/Literary Festival (March).Springtime weather is comfortably warm, with average high temperatures ranging from the low 70s to the mid-80s. Many of the city's most popular attractions close during Mardi Gras, so if sightseeing is a priority, plan a trip that doesn't coincide with the event. Book several months to a year in advance to ensure a reasonable room rate. However, you should note that hotel rates rise dramatically and, due to heavy tourist traffic, availability can be scarce. This is the time when most of the major festivals – including Mardi Gras and the New Orleans Jazz & Heritage Festival – take place.
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