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Brake Upgrade for 3.6

Craig15 did you ever go any further with bigger brakes on your 997? HiSpec or otherwise? I'm also looking into options for my 996.1 and would appreciate hearing your thoughts if you went ahead.

Currently my favoured route is looking like 6 pot Cayenne or Panamera callipers mounted via custom brackets / spacers (But it's the custom bit that has me foxed at the moment. Quite a few people seem to have done it on a 'One off" basis!)

Any thoughts and advice gladly received!
 
Guys have a look on the 996 forum as the 996.2 and the 3.6 997 gen 1 share a lot of the same things from brakes to engine to suspension I think

Certainly brakes they are similar

One of the guys on there has done the 6 pot caliper conversion from the cayenne turbo with the grooved discs too from that car. It's a fairly cheap conversion I think with some custom brackets

If they can cope with a cayenne turbo then on a 911 epic!!

For a road car I would prefer to stick to Porsche braking systems as they have always been some of the best in the world. Shame the c2s brakes won't fit as that was one of the worlds best stopping cars at one point !!

Did you get the gt3 brake ducts in the end? I would do brake fluids , pads and braided lines

No Porsche brake lines are not braided on road cars and not even on GT or RS cars from memory. I changed them on my old gt3 and it helped with pedal feel and confidence and did not expand on track.
 
I believe both Poppopbangbang and MrCorn put together big brake conversions based on the Porsche Cayenne calipers and Cayenne / 997 Turbo discs. My understanding (Forgive me if I'm wrong) was that these needed custom brackets AND some fairly complex machining to the calipers themselves (To go from lug to radial mount)?

I believe the caliper machining was quite a specialised task.

I was wondering though... the later model Cayennes and Panameras were fitted with radial mounted 6 piston 'Wingmirror" calipers. Please excuse my ignorance but would using a set of these not mean that they could be bolted to the 996 hubs using a relatively simple adapter / spacer plate?

Ie (Round numbers) 16mm thick plate fixed to the 996 hubs then the radial mount Cayenne / Panamera calipers bolt onto the plates, with the mounting holes set so as to align the calipers with a set of 350 / 355mm Porsche Or Brembo discs?

I may be missing something obvious here (And please chime in if I am!) but this could possibly be a route for fitting 'Current generation" 6 piston calipers designed (By Porsche) to slow down their 2 tonne cars.... onto our little 1300kg go carts? I'm thinking the larger (27mm?) master cylinder would likely be needed and maybe relocate the front 318mm discs and calipers to the rear...

Again. I may be being overly simplistic here and if Poppopbangbang or MrCorn would like to offer their opinions I'd love to hear them!

I'm starting to think this could be a fun but manageable little 'Project"...
 
Im not technical enough to know if this is of use or the same can be done.
But last month my independent did a modification so i can run the bigger 380mm cup front brake discs
 
If the calipers are the same as on the 996 then in terms of calipers with adapters, you are struggling for the 6 pistons used on the 996 turbo and I think the 997.1 as the bolt spacing is similar to what you have, just a bit wider.

These are the two setups I have produced. One is a modified Cayenne turbo with bracket to take 997.1 350mm GT3 disks. The other is a 997.2 GT2 caliper with bracket for 380mm disks. Note the much wider bolt spacing on the later GT2 calipers. The rears can use a simple spacer.







I would run these with a 27mm master cylinder.

MC
 
MisterCorn said:
If the calipers are the same as on the 996 then in terms of calipers with adapters, you are struggling for the 6 pistons used on the 996 turbo and I think the 997.1 as the bolt spacing is similar to what you have, just a bit wider.

These are the two setups I have produced. One is a modified Cayenne turbo with bracket to take 997.1 350mm GT3 disks. The other is a 997.2 GT2 caliper with bracket for 380mm disks. Note the much wider bolt spacing on the later GT2 calipers. The rears can use a simple spacer.







I would run these with a 27mm master cylinder.

MC
Click to expand...

Hi MC
Are the bigger 997 calipers plug-and-play with the spacers onto a 996.2 C2? IF yes, would you be interested in producing some for sale? I'm sure a lot of people would be interested.
 
Yes they are, you can run the modified Cayenne ones on 18" wheels with 7mm spacers but the PCCB ones really need 19" wheels. I'll do a thread on them when I have the yellow ones on the car with wheels and tyres.

MC
 
Hi Dagerous

I bought HiSpec 6-pots with 370x32mm rotors with Ferrodo DS2500 pads in the end. I say in the end because it seemed like I was waiting for most of this year for HiSpec to deliver........ They said they would deliver in 4 weeks but they took 10 weeks. I had to send the discs back because they didn't fit the hubs. After I got the discs back I then discovered the caliper mounting brackets didn't position the caliper central to the disc, so they had to make new brackets. All in all an absolute useless company. I wouldn't advise anybody to use them. I paid £2300 for months of false promises and agony.

I had read horror stories back in 2002 when I was building my Westfield kitcar but I thought 'it'll be fine, just a few bad stories on the internet'. How wrong was I. Their customer service is atrocious. I designed more of the brake kit than they did.

(Sorry for the rant, you did ask.... :) )

Having said all that, I love the brake setup now. The car really hauls down and pedal feel is great. You can pin it to the apex with confidence. I wouldn't claim to know the in's and out's of other caliper manufacturers compared to HiSpec but I suspect any big disc setup (with appropriate size caliper pistons to master cylinder) with a decent pad would feel similar to what I have.

I also bought the GT2 plastic ducts. I'd be amazed if anybody could tell the difference between those and the standard Carrera ducts I removed but they were cheap and its cool to have a GT2 part on the car, haha.

If I was doing it again and I couldn't find a kit like what is being discussed above, after the heartache i had with HiSpec, I would quite happily pay £3340 for the Brembo GT 380mm kit.

Some pics to follow.

Hope this helps.

Craig
 
Some pics of my Hispec setup.
 

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