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Brake improvements/upgrades?

So I did the Porsche Experience at HQ down by the airport the other day. Drove 911's and a Spyder with three different instructors. Damn, they looked like high school kids to me and their job is driving the crap out of Porsches......niiiiiice! Beats running an amusement park ride like I did!

Anyway, the brakes on these vehicles are phenomenal! I mean just blew me away. Especially the ceramics.

What can I do to get my 930 to stop like that?
Old 05-13-2016, 12:22 PM
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I don't see the point with non-abs cars. I can press the pedal hard enough to lock up the tires on my 930, so other then fade resistance, how can it be improved?

Also, nearly everyone that tracks switches to steel rotors. Ceramics are way too expensive.
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Old 05-13-2016, 02:08 PM
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Start with wheels and tires... put the same low profile rubber footprint (as the newer vehicles you drove) and quality tires on a lightweight wheel. Report back...
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Old 05-13-2016, 09:29 PM
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I put 928 S4 calipers up front and moved the original front calipers to the rear. Huge improvement! Much more modern/progressive feel compared the to normal wooden feel.


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Old 05-14-2016, 02:14 AM
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Rufrob - I have the same set up as you - S4 calipers on the front and Turbo calipers on the rear
Awesome braking!
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Old 05-14-2016, 05:04 AM
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Anyone upgrading, can I have your old calipers? Upgrading an sc. Gimme a call to sell your old ones. 706-392-2580. Thx. Mark
Old 05-18-2016, 05:59 PM
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Are 928 calipers a simple bolt on or does it require machining and custom mounting/parts?
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Emery

1988 930 coupe - Silver Metallic
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Old 05-19-2016, 02:40 AM
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Needs an adapter
Old 05-19-2016, 09:55 AM
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Just my opinion, but I've never been disappointed with the on-track performance of my 930 brakes. Regarding ceramics, I was in the garage at Watkins Glen this past week and my neighbor had a new GT4 with ceramics and he was very disappointed with their on-track performance. He indicated that he would be switching back to steel rotors asap.

Regards, Dave
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1986 930 - K27-7200, Andial Intercooler, Tial Wastegate, Electronic Boost Controller, B&B headers, Bodart Zork, Leask Adjustable WUR, Full Elephant Racing Suspension w/Adustable Spring Plates and Von Shocks, Wevo Transmission Mounts, Fuel Safe Fuel Cell, Forgelines (9"/11"), Hargett Shifter, Innovate AFR, Cobra CF Seats, DAS Rollbar, Coleman Floating Rotors, Lightweight Interior, Forgeline 17" x 9"/11", 2800 lbs.
Old 05-20-2016, 08:17 AM
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I suspect the big difference is ABS vs not
Old 05-20-2016, 11:48 AM
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Before you upgrade calipers, change your fluid to Brembo LCF-600 and put on Pagid Yellow RS29's... wear your seatbelt...
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Old 05-20-2016, 11:59 AM
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For those replacing original 930 calipers with 928 whatever or 993TT calpipers keep in mind good condition 930 calipers are now worth a lot more $$ than the others.
Old 05-21-2016, 10:33 AM
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Quote:
Originally Posted by unclebilly View Post
Before you upgrade calipers, change your fluid to Brembo LCF-600 and put on Pagid Yellow RS29's... wear your seatbelt...
How are those for street use? squeal? dust? low temp stopping power?
Old 05-23-2016, 10:44 AM
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Originally Posted by unclebilly View Post
Before you upgrade calipers, change your fluid to Brembo LCF-600 and put on Pagid Yellow RS29's... wear your seatbelt...
All you need as mentioned!!...Pads and fluid.930's have awesome braking power for your level and several levels higher. These cars are designed for this. Do not upgrade anything until you max out your capabilities...Enjoy
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Old 05-26-2016, 04:56 PM
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Agreed that stock 930 brakes that are properly set up (like any/all Rawknees joke) are more than excellent - even on-track.

Bleed and re-bleed with the right fluid and run good pads and there's no reason to "upgrade". Careful to not go too aggressive with pads, you'll chew yer rotors bigtime.

I'm running Porterfield R4S which have proved to be a great combo of rotor-friendly / pad bite / warmup time / resistance to turning to goo (as does Rawknees within even the mere vicinity of dongs) / dust / price variables.

I'll add that running more than the *shameful* 205 front tire section width aids in braking capacity STUPENDOUSLY! With my setup and 255s up front my braking performance is now utterly redonkular.
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Paul... CT | '87 930 | '08 M3 6gang vert |
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| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |

Last edited by krasuskyp; 05-29-2016 at 10:31 AM..
Old 05-29-2016, 10:28 AM
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Quote:
Originally Posted by krasuskyp View Post
Agreed that stock 930 brakes that are properly set up (like any/all Rawknees joke) are more than excellent - even on-track.

Bleed and re-bleed with the right fluid and run good pads and there's no reason to "upgrade". Careful to not go too aggressive with pads, you'll chew yer rotors bigtime.

I'm running Porterfield R4S which have proved to be a great combo of rotor-friendly / pad bite / warmup time / resistance to turning to goo (as does Rawknees within even the mere vicinity of dongs) / dust / price variables.

I'll add that running more than the *shameful* 205 front tire section width aids in braking capacity STUPENDOUSLY! With my setup and 255s up front my braking performance is now utterly redonkular.
Are you running stock wheels? What tires/sizes?
Old 05-29-2016, 12:57 PM
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Quote:
Originally Posted by flightlead404 View Post
Are you running stock wheels? What tires/sizes?
Paul will supply specifics, butt in summary, he's running "dubs" (his wheel size a vain attempt to compensate for "something else")!

Last edited by Rawknees'Turbo; 05-29-2016 at 01:16 PM..
Old 05-29-2016, 01:13 PM
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Quote:
Originally Posted by flightlead404 View Post
How are those for street use? squeal? dust? low temp stopping power?
Phenomenal.

They work well cold, something Pagid blacks do not. No squeal. Not bad for dust.
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Old 05-29-2016, 06:50 PM
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Quote:
Originally Posted by Dave 86 930 Fl View Post
Just my opinion, but I've never been disappointed with the on-track performance of my 930 brakes. Regarding ceramics, I was in the garage at Watkins Glen this past week and my neighbor had a new GT4 with ceramics and he was very disappointed with their on-track performance. He indicated that he would be switching back to steel rotors asap.

Regards, Dave
Are you running ducts to the inside of your rotors? Just curious.

I am not generally concerned about stopping power but fade resistance. I'm thinking about running my car out at COTA later this season once it cools off. The big straight after turn 11 will yield 150+ in my car with a shut-down left hander at the end. Given the length of the track I am honestly concerned I will overheat the stock brakes. I am running new OEM rotors on good condition calipers with SS lines and Carbotech XP10's. I have great bite but again my concern is pointing more towards to fade resistance on the big tracks where I am going to see significant speed. Thoughts?

- Chris.
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Old 05-30-2016, 04:01 PM
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Quote:
Originally Posted by flightlead404 View Post
I suspect the big difference is ABS vs not
Yes ABS makes a huge difference. One of the reasons why a 964 can absolutely destroy a stock 930 in the circuit despite having simular power to weight and far less torque.

You may be in luck. I think Bosch has came out with an after market abs system for racecars and re-equipping older cars without. I can't remember the details but it was featured in race car engineering mag a couple of years ago.

If you are upgrading this may be the ticket for you to get the 930 closer to the modern pcars.
Old 05-31-2016, 01:55 AM
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