Before you change fan from pulley to electric,record the whoooose sound on to a digital c.d, then you can play it at whatever temperature you want.You are all right about pro's & con's of the fan Debate,however Terry is asking for improvement's in a realistic & cost effective way,& something that does'nt cost an arm & leg. So collectively,every little bit help,s toward's getting your car to give you hassle free enjoyment,without conking out,splurting,getting overtaken by a granny in her wheelchair,& bonnet open with bus passenger's laughing at the poor bloke who's not got breakdown cover with the AA.So For Terry it,s A complete picture, carb's,engine,manifold,etc,etc,etc,................Please help with Terry's original question so Muttly can get on with it...DJZ 60.