hi, i want one of those fan switch's that kick in a couple of degres earlier then the standard ones, does anyone know what they are called or even better have the part number? cheers

 

think motorsport developments do them, its an uprated fan switch and they do the thermostat that comes in earlier to.

 

As said MSD sell the uprated ones it does not close earlier rather a few degrees later but has a way shorter span than the standard ones. I.E standard Cosworth closes at 86 degrees and opens at 77 degrees hence why the looms/relays burn out as 9 degree span!. The MSD "Uprated" one (Actually from another car) closes at 92 degrees and opens at 88 degrees hence the fans cycle for less. They also sell one for the RS Turbo.

Martin