DekkerI upgraded mine using 2nd hand 928 S4 calipers for the fronts and 993 rear calipers. There are articles on Rennlist showing what's needed and what you can do. If you want to go brand new the Big Reds for the fronts but you'll need the larger discs, 330mm, as opposed to the smaller ones I used for mine which are the same as 964 RS.If yours is a C4 then you only need the front brakes upgrading. Upgrade to 924 S4 fronts on Sports 928 S4 discs• front calipers (require caliper adaptor)• 302 x 32mm cross-drilled front discs for 928 S4• 993/964 Carrera RS rear calipers (they are the same caliper)• 964 Carrera RS cross drilled rear discs• Recommended: 993 master cylinder for C2. For track use, RS upgrade for C4, Turbo• 55 bar bias valve This upgrade further enhances brake cooling with a larger disc. By themselves, the front calipers would increase front brake bias, however, this is balanced by fitting the 993 calipers with larger pistons in the rear. Discs now have holes and curved, directional, vanes in the front. This upgrade requires 17 inch wheels. Front2x44mm Seals3x36mm Seals Rear4x34mm Seals4x30mm SealsBrakes International 01706 662986 Josh Without pistons £63.95 2x 44mm kits (piston & seals) OPC Sutton Coldfield 1x 36mm kit (piston & seals) OPC Sutton Coldfield £69.61 2x caliper interconnect pipes & fittings £65mm ID Samco Silicone Hose for interconnects 1metre RaceBikeBitz £4.502x brake pipes & fittings £6 2x Adapter Brackets for fronts £50 Pro94x M12 x 1.5P x 35mm fine pitch Allen cap head bolts High Tensile Grade 12.9. Ballsgrinding.com £8.584x M12 x 1.75P x 80mm fine pitch Allen cap head bolts High Tensile Grade 12.9Kay's Fasteners £3.948x M12 washers for 928S4 calipers OPC Sutton Coldfield £2.50 55psi regulator valve OPC Sutton Coldfield £61.58 993 C2 rear calipers £150 PCGB member928S4 front calipers £130 Ebay 2x 964RS front discs Pro9 £350.402x 964 rear sports discs CarParts4Less.com £175.56 Total £1,102.62 964 C4 Textar rear pads928S4 Textar front pads Prices were for 2014/15
BungditinVery helpful advice guys. i guess I’m in the market for some 993 rear calipers cheers
mcgc0Options options... you can go mad (just for the sake of it) and throw silly money at something you'll 99.9% never use as designed. To be honest, I thought I could improve things years back but 2 different C4's later I realised I'd just be wasting my time and money (which is better spent on top tyres and long EU trip fuel to Le Mans!). As mentioned above I believe, the C4 and Turbo have the same calipers as 928 S4 (big blacks) and different to the C2, it also has a high pressure hydraulic brake boost pump - a charged circuit ready to drop anchors in a millisecond on your command. Plus it has a different master cyl diameter. All in all, I find the braking to be phenomenal and really do the job well - track days and when I've spent 7 hours/day fast driving the Scottish open highlands with full/fast on braking. Stuck to Textar pads (as recommended by a current PCGB Speed Championship buddy) and only get these from an OPC. High/track quality brake fluid is changed religiously every other year. If you are to change to different calipers then it's an all wheel consideration and not just rears - the bias will throw you off into the scenery ;) Let us know what you go with on the end...
Steve Brookes...the C4 did not have big blacks all round. Only on the rear. The C2 had 2 pots on the rear until MY92
mcgc0Steve Brookes...the C4 did not have big blacks all round. Only on the rear. The C2 had 2 pots on the rear until MY92 That's right Steve, apologies if it wasn't clear as I thought it was the rears we were referring to. Yes, later year C2's were upgraded. Also correct is the suggestion the 944 T's had same calipers - the final MY 944T's had a lot of juicy performance options as standard (inc M220 LSD etc). Still thrashing the Cayman R (or even still have it?) :)
timrichardson1Guys sorry to hijack the thread, my car is a C2 running 2 pots front/rear. I need to change pads and discs all round, what is the best option and where to source with our discount? Seems Textar pads are the way forward, can we go aftermarket on the discs? Thanks
timrichardson1Excellent thanks for the advice sir, it's a 'to do' job that I need to factor in prior to the next annual service in April. Going to have a go at it myself :-)
Steve BrookesType911 are a reliable supplier for the sebro discs for a 964. The front brakes are 4 pot and there's plenty of pad choice for those but for normal use I found textar to the best. The rear 2 pot brakes use very small pads and there's very little choice for those. It's either Porsche original or textar.
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