Brake pedal fade and track days

[hueb]

Hi guys. I'm sure this will have been discussed in much depth before but.....last weekend took the TVR wedge 450 to my local track for four 8 lap sessions. Weather was around 28 degrees (this being in Oz by the way!) Had a ball but after several laps of each session & at certain corners after some heavy braking before, experienced pedal nearly to the floor to slow the car down. Down the following straight the pedal feel would again return on the next corner.

I've got the standard Granada vented disks with 4 pots on 15" wheels & original brake hoses. Before the track day, changed the fluid to super Dot4 & fitted Mintex 1155 pads.
For those that have experienced similar, are there any recommendations / suggestions to help improve matters? I'm also looking into putting in extra air ducting direct to the disks. Cheers Clive

[hueb]

Thanks everyone for your comments. As I've only got Castol super Dot4 in there at the moment, I'll upgrade to Motul. Plus I think it's probably time to upgrade brake hoses to braided ones & also to improve air-cooling (which would also include removing the metal backing to the discs). I noticed many of the cars at the last track day I went to had some serious 3" air ducting towards the brakes.