User talk:Jamal M Khalfan

why do head bolts have to be tightened in a set sequence and to a certain torque?
 * Because you are on Wikipedia, the free encyclopedia, and we don't answer general knowledge questions, we write encyclopedic articles. Maybe your question could be answered at our reference desk.  [CharlieEchoTango]  09:31, 1 February 2011 (UTC)