SCORE Journal - The Official Publication of SCORE Off-Road Racing
Issue link: http://read.uberflip.com/i/501768
That much air in a four-inch intake tube is going 83 MPH. So you would have to be traveling well above that speed to get any positive pressure from any scoop." POSITIONING THE AIR BOX There is general agreement that the best place to position a desert race vehicle's air intake system, is where there is the minimal chance for dirt and dust to collect. Most of the experts agree that for a four- wheel vehicle is inside the cab, as the filter escapes both dust and engine heat. Ultimately the position of the air intake system depends on what kind of space the vehicle has and what will work best to get the fresh air to the motor. "Finding clean air is always ideal especially for the engine. So if it is possible for the team to duct into the cab of their race car to get fresh air, we always suggest that. Air boxes work great, especially because they protect the filter from getting hit by rocks or water. As an example, our ORAC is a canister style air cleaner, that was originally developed for the US Military and was tweaked a little for the Off-Road market," said R2C's Greenlees. Another important factor to consider is if the engine is equipped with a carburetor or a throttle body. "We try and help teams build something that will maximize the amount of filtration whether it's an airbox or using intake tubing to duct a filter into the cab that will accomplish it," says Greenlees. "It is our preference to work with the different race teams to design an air filtration system best suited for the vehicle and application. Doing this ensures that the team has both superior engine protection and air flow capacity throughout the race." Many race teams use canister style air intake systems that house a large air filter, but most importantly protects it from a majority of the dirt than if the filter was left open to the elements. "Our canister style intake systems allow the filter to live pretty much anywhere," says Cappos. "Clean air can be ducted to feed the canister. Front engine cars and trucks can get back to the cab under the dash for good air or mount the canister there, and duct forward to the engine with the filtered air. Class 1 or rear engine cars can duct the air from the passenger area back to the canisters mounted where they best fit and the air can come from a clean and cool spot." ATV and motorcycles don't have a "dead space" like the four-wheel vehicles do within the cab. So here, there are other TWO LARGE (1000+ CFM) CAPACITY R2C PERFORMANCE CANISTERS MOUNTED FORWARD OF THE V8 ENGINE. NOTE HOW THE INLET OPENINGS FACE INWARD TO DRAW CLEAN AIR. THIS LOCATION IS AN OPTION, OTHER THAN MOUNTING INSIDE THE CAB DUE TO SPACE OR TEAM PREFERENCE UNIQUE METAL PRODUCTS (UMP) AIR INTAKE SYSTEM APPLICATION ON A FRONT-ENGINE V8 RACE TRUCK USING A THROTTLE BODY. AIR CANISTER IS MOUNTED INSIDE THE CAB. 041 SCORE JOURNAL