Delta Motorsport Park August 11 1974Delta Motorsport ParkDelta, OH 250MX Results 500MX Results Results Home 1974 Results Delta Motorsport Park Live & On-Demand Learn More * all times Check back for a full broadcast schedule closer to the race. 1974500MXFull Results JimWeinert1st MikeHartwig2nd BryarHolcomb3rd 1974250MXFull Results JimmyEllis1st TimHart2nd RonPomeroy3rd