Given prawn runs 323's which are only marginally larger, i think the 312's can be made to work just fine.
It would be a different story if Prawn regularly ****** the 323's and had to fit 350's to keep the temps under control, but thats not the case is it?
Actually, my 323's are right on the limit of what they can take heat wise. I'm having to add cooling to them to keep them at their best.
I think that 312's are a good starting point.
They're sh*t!
I believe that on a much lighter car like a stripped A3 you'll be fine.
R-kelly believed he could fly, but like you, he was wrong
the reason your 312's work better is because the porsche calipers can deal with the heat far better
At the end of the day guys, what Bill and I say is right, speaking from experience, 312's are NOT up to track work.
It's not the mechanical stopping power that's the issue, as kev says the percentage difference isn't massive between 312's and 323's, and the hydraulic power isn't that different either, but the thin 25mm discs, and nasty iron single pot calipers just cannot cope with the heat build up at all, and they fade and fail within a few laps.
My 323's don't fade power wise, but they run ULTRA hot as can be seen from the colour of the discs, and pedal feel deteriorates towards the end of a 15 minute session. I'm mid way through adding brake cooling ducts to try and solve this without the expense of 2 piece 330mm discs.
To put it another way, if you're finding 312's with single pot calipers are OK for track use, then you're probably pretty damn slow.
Welly is a keen driver as we all know, 312's woudln't last 2 laps of Combe with him driving regardless of pad choice.
A set of brembos or R32 brakes (which you hate I know) would blow that out a fair bit. Unless he gets a bargain?
