How,Maintain,the,Carburetor,an car How to Maintain the Carburetor and Fuel System (1)
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There is no substitute for a well-designed fuel and air deliverysystem. By ignoring these two critical areas, all the work of building a strongpowerplant is wasted. Air DeliveryFor maximum horsepower, the coolest, most dense airpossible should be available at the carburetor inlet. Keepingrestriction in the inlet path to a minimum - or better yet, pressurizing theair - is also desirable. The denser the air, the more you can get into thecylinders. This allows the engine to burn more fuel and make more power. Werecommend that a hood scoop or outside air intake should be installed whereverrules allow. Under hood air is heated by the engine and headers and reduces theamount of power that can be produced. A reduction in temperature of 10 degreesF. is approximately equal to a one percent power gain. There should be a minimum of three inches ofclearance between the top of the venturis and a hood scoop. If an air cleaneris installed, the tallest possible element is preferred with four-inch elementpreferred for racing engines over 500 HP. When a hood scoop or external air intake is used,it is highly suggested that the carburetor be sealed to it. Otherwise, air willflow across the top of the carb and out of the inlet tract rather than into theair horn. If air is forced past the carburetor it can siphon fuel, causing theengine to run lean. Windshield snorkels are especially notorious for siphoningunless the rear is sealed. Air pan kits for sealing the carburetor to the scoopare available or they can be fabricated. An air bell or radiused intake shouldbe used whenever possible to increase air flow into the carburetor. It is not unusual for a drag race car to improveETs by 0.3 second and increase top speed by as much as seven miles an hourafter installation of a sealed scoop. A car will not pick up ET after the scoopis sealed off if the scoop is too short or the fuel delivery system isinadequate. On oval track cars, the same is true. Payingattention to the inle tract design will pay off. Depending upon track length,oval track cars will typically improve lap times by 0.1 to 0.5 second once anoptimized air intake system is installed. Fuel DeliveryMany racers experience fuel delivery problemswithout ever being aware that something is wrong in their race car's fuelsystems. Today's state-of-the-art engines produce a lot more power than a raceengine of ten years ago. The process of producing horsepower revolves aroundthe conversion of fuel into energy. The more pounds of fuel an engine can burnefficiently per hour, the more horsepower it produces. Even though your car maynot miss, pop, bang, skip or do anything else peculiar, it may not be gettingall the fuel it needs to make maximum power. Find out more about Mitsubishi L300 carburetor by visit miparts.com.
How,Maintain,the,Carburetor,an