i have a hi spec monster 4 brake converstion on my new car and it needs new discs as they are cracking need to no best place for them and also are turbo systems good as my car has had alot of work done by them and i have been ringing them to find out some information on the chip but cant get through to them it running closed loop l8 greys low compression 7:5:1 big turbo but running 7.9 % on gas analiser put £120 of fuel in it to 300 miles

 

Hi Spec themselves is no doubt the best place for the discs.

Turbosystems are one of the top cosworth tuners and highly rated.

Tony from turbosystems uses this site at times so a quick search for him should help.

 

I assume you have drilled discs ?, if so and the cracking is just tiny cracks radiating a few mm from the drillings don't worry, no need for new ones, it's when they split with a split all the way to the outside edge of the disc and 2mm wide gap you need to worry.
Look on rallye design as the his spec are only std discs of a ordinary car/van etc with the centre bell part cut out, then drilled to suit the alloy bells, so find the diametre and look on rallye design, they are two main bolt patterns with either 8 or 12 bolts.
tabetha

 

they are groved discs and are very thin now and have started to crack and blue up

 

Blue spotting is ok, that is blue streaks on the surface of the disc after a hard use, if you mean that, as it is just localised heat pitting which wears off easy, but if as you say they are very thin then obviously a new set makes sense.
tabetha

 

they are very thin and only noticed that they are not that good after trying to slow down last night from high speed loads of noise and not much slowing down like brake fade then they were blue, do you no how to re set the base co on the l8 ecu tony from turbo systems explained it to me but i forgot now many thanks

 

What pads you using ?, to set the co is merely a matter of turning the co screw, but check base idle(speed) and fuel pressure are correct first.
What size are your discs ?
tabetha

 

discs are 335mm, what is the correct fuel pressure as its running a 044 pump is it the same as in the ford tsb?

 

Fuel pressure will most likely be std, but needs checking with the chip supplier as they may want a different one.
tabetha

 

thanks i have checked it and all is good have now sorted out emissions the closed loop wiring plug was shot,and had a bad earth on the engine

 

Good news, and unusually for a cossie no big bill to fix it!!
tabetha