SUN VALLEY (Dec. 17)- Although most top level racing series use fuel injection for their motors most of the series belowt still use carburetors. This is especially true at the grass roots level.   And Competition Carburetion of Sun Valley is one place many racers go to have their units serviced or rebuilt. Owner Bob Oliver, a veteran racer himself, keeps all types of carburetors running, no matter if they for a muscle car, vintage car or racer, modern racecar or sprint car. He got his start in racing when he was growing up in Southern California. ” I raced