Coyote99

I need some advice about the stock brakes on my '89 911. The Prototech Stage II engine upgrade in it puts out 550hp, so I clearly need to get better than stock brakes for track days. Suspension, tranny, clutch, etc. are already done.

So....help me out if you are savvy on my options. Thanks in advance.

Tom W

The easiest upgrade would be to 993 tt "big reds" or equivalent calipers and rotors up front and the 965 calipers and rotors in the back. You need an adapter due to the different mounting up front, but otherwise it's a simple change to get bigger pads and rotors. You can also add a 993 C2 master cylinder to help a bit with pedal feel.

Bob Brooks (viperbob) at Devek did this for my '92 and has a kit put together for the MC conversion (it needs adapters but otherwise fits fine). You can get him at 650-369-3383. Devek is a Rennlist sponsor.

Bill Verburg

Big Reds are a bolt on f/r. But the the 993 m/c is not, not on an '89 911 anyway. Use a stock 930 m/c it will be fine.

Steve Weiner-Rennsport Systems

As usual, Bill is right,......

I'd add that Big Reds have been discontinued by Brembo (the tooling finally wore out) and these have been replaced by the GTP line of brakes for these cars.

A930Rocket

Steve,

Speaking of the GTP brakes, where can I get replacement rotors that are slotted vs. the factory ones with cast holes? I'll need some in the not so distant future.

Jim

Steve Weiner-Rennsport Systems

Hi Jim:

GTP's use Porsche TT OEM rotors and there is not a slotted, direct replacement option on those. The front hats were specifically made for the less-costly 993 TT front rotor and the rear uses the TT OEM ones to retain the E-brake.

I do slotted rotors (Alcon) in that size but they are NOT cheap since they are full-floating and require different hats/hardware.

A930Rocket

LOL. I was afraid of that....

Looks like I'll stick with the 993TT rotors.

Thanks,
Jim

keith

what pads are you running at the track?

A930Rocket

I'm using Pagid Orange, but have tried the blacks as well. Seems like the Pagid blacks are never available for my calipers....

Might try a Pagid yellow pad next time.

930man

i ve bee using pagid yellow the really hold up well for DE events have a great bite not to bad on rotors

930man

A930 You in NC I thought ive seen the car at VIR? well the *** end of it At Mazda event as well as other events ... great driving by the way

A930Rocket

930man,

I'm in Charleston, SC. I've been at VIR quite a bit, incl the Mazda event. Had a good time, but had to leave early Sun with two sessions to go, as I was there the prior two days with the Audi/BMW/MB out of DC and was running out of tires. VIR has to be my favorite track with Road Atlanta right behind it.

Were you in the 997?

930man

yeah that was me slowing going around the track....

getting used to the 997. VIR is my Favorite i wish grand east were one hour sessions so u could come and go...lil more seat time. finally found some R compunds for the 997. they arent the exact spec size but what a difference over the PS2's i was running at the track

I am planning on heading to Atalnta in October with a group fo P owners for the PCA event if we can get in... will u be down there?

let me know. will be at the NASA event at Vir in AUG sept pca events

A930Rocket

I'm trying to make Road Atlanta MId July, but having just moved into our new house yesterday.... I'm not sure if I'll make it.

We'll also be at VIR in Sept with PCA, Oct with Synergy (old G&W group), and Nov with PCA.

altonj

I am runnung the GTP kit from Steve on my 84 at the track. They are fantastic brakes!

Jeff