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Does anyone know what other models made by Porsche that brakes would bolt right onto my 964? For instance here is a set of Panamera brakes that are on my local market place.
The 964 has axial calipers front and rear (unless you have a Turbo or RS, in which case you have radial fronts).
All newer Porsches have radial calipers front and rear (i.e. the brake bolt runs parallel to the disc, not parallel to the axle).
So no, other calipers won't bolt right up to the 964.
There are ways to adapt the car for other calipers/rotors, but it's not necessarily easy. Never seen it done with Panamera brakes.
One restrictive factor to the size of caliper you can install is the size of disc that your wheel will allow. There are adapters available which allow you to up size the caliper and disk. Most are based around using Turbo or RS parts. In some cases brake manufacturers offer complete kits allowing larger disc and calipers. But, here again the size of wheel that you use may or may not work, you really need to do your homework to make everything fits. Key is not only the radius of the caliper but also the width of the caliper as the inside wheel clearance may not be great enough to clear the width of the caliper. This is particularly true of bolt together 3 piece wheels/
Why do you need more brake? I am running 993 RS front and rear on my RSR project and I have adequate braking when I had the 330 WHP engine in the car on track. I might need to up the front rotors a little with the 600whp engine. I do loose the rear handbrake with the rear RS calipers and rotors. A simple Big red upgrade with 993 rears is a lot brake and is adequate and essentially the same as what is on my 94 turbo with 450bhp. If you need more stopping power you can always play with brake pad compounds.
As Gus says the first issue is rotors
the only Porsche models w/ rotors that are 964 compatible are
968, 928, not even all 964 rotors are straight swaps, for instance 964t and 964 rears while they have the same diameter have different thicknesses
the biggest factory front for any of the above is 322x32 front and 299x28 rear(t) or 24(all other 964)
to retain the parking brake you would need at least a 330 mm rotor, though there is a 322x28 2 piece available for 993 rear and w/ the right hat could be used on a 964
fter market of course will have 350 and 380 fronts and 345 to 350 rears
another issue is the thickness, many of the late Porsches use 34mm thick rotors, the calipers for these will want greater than 32mm thickness. rotors.
Why do you need more brake? I am running 993 RS front and rear on my RSR project and I have adequate braking when I had the 330 WHP engine in the car on track. I might need to up the front rotors a little with the 600whp engine. I do loose the rear handbrake with the rear RS calipers and rotors. A simple Big red upgrade with 993 rears is a lot brake and is adequate and essentially the same as what is on my 94 turbo with 450bhp. If you need more stopping power you can always play with brake pad compounds.
More or less newer technology, potential lower weight, and also planning for future to replace instead of rebuild. I'll probably just keep an eye open for big reds off a 993. I didn't know if I could find a wrecked Early Boxster S and get those to fit. I appreciate the response.
If you want lighter and larger brakes Brembo has 2 options. Both have 2 piece rotors with aluminum hats and fit the stock parking brake. I went with the smaller front rotor as that is the lightest and still larger
than the Porsche RS offerings.
I know the rear rotor is very deep on an NA 964, but is the diameter of the parking brake actually any different from a 996 or 997?
The rear rotor on the turbo is much more "normal" in terms of offset and I wonder if that could be more easily swapped for a larger rotor.
More or less newer technology, potential lower weight, and also planning for future to replace instead of rebuild. I'll probably just keep an eye open for big reds off a 993. I didn't know if I could find a wrecked Early Boxster S and get those to fit. I appreciate the response.
The big red is a heavy setup but is more than adequate. I swapped out the brakes in my Cayman S to larger 350mm units. Interestingly the front rotor from the 981 is nearly identical to the front rotor used on the 964 turbo 3.6. The 986/7 units are actually smaller. The later brakes usually will need special wheels or caliper modifications to work on our cars.
These are the larger brakes I installed on the Cayman 350mm dia with IIRC 32 or 34mm thickness. These are from a 911GTS and have 6 pistons but are quite small compared to the 380mm units used on my GT4. I believe I could with minor modifications fit these to the 964 but not sure much would be gained other than heat dissipation. Stopping power improvement wasn't as much as expected even with a GT3 MC and vacuum pump installed. You would need a custom hat and rotor to make it work. I will be removing these from the cayman soon and will try to take pictures and post the differences between these and the big reds.
GTS front calipers on cayman with 350mm rotor. Might fit but would need the feeds and bleeds swapped & spacers to work. I will weigh and verify dimensions once I have them removed.
When you think about it the 917 used the same sized pad as the 964 C2/C4 and was able to stop a much lighter but far faster car.
The 993 3.8RSR used the standard 993RS brakes and could be optioned with larger dia rotors IIRC 350mm by using spacers to push the caliper out which will give you more stopping power if needed but will definitely need 18"wheels.
Doesn't show much but this is the front. of a 993RSR 3.8 using big reds and the larger 340 or 350 mm rotor. Bill might have the info on what was optional back then but I suspect that you will need to contact Spyerx and ask him what he used on his 964 if you need larger brakes.
One caveat as you go up in size prices for pads and everything associated goes up as well. These also usually require the removal of the caliper to change pads which adds strength to the unit but is a bigger PITA.
GL
The big brakes are definitely heavy. I've been doing some investigation into fitting 350mm PCCBs from a 996/997 under 18" wheels, as you could drop a lot of rotor weight that way.
The big brakes are definitely heavy. I've been doing some investigation into fitting 350mm PCCBs from a 996/997 under 18" wheels, as you could drop a lot of rotor weight that way.
Great brakes but IMO way to costly and I have seen far too many horror stories with the rotors. FYI I have a set of 18's I purchased second hand that were fitted to a 997 with 350mm rotors and they did rub a little.
12-16-2023, 10:17 PM
Other Porsche model brakes fit the 964???
