oven temperature for sirloin tip roast
Place the meat on the grill. Transfer the seasoned roast to the unlit portion of the grill. Cover the grill and cook for 1 hour. 1  Stick a meat thermometer into the center of the sirloin tip roast to test its internal temperature.2  At this stage, it should be 140 degrees Fahrenheit (60 degrees Celsius).over the grill and cook for 1 hour. 1  Stick a meat thermometer into the center of the sirloin tip roast to test its internal temperature. 2  Monitor the temperature of the grill as the meat cooks to make sure it stays relatively consistent.