Brake Upgrade for my 88 - 911

MELO-911 · 05-06-2008, 10:19 PM

hey all

i am looking at upgrading my brake package. i have been looking at getting some 930 brake claipers but 1 they hard to find people selling and prices are high.
so my questions are

- would 964 or 933 brake package fit?
- big modification in installing if it can be done?
- if so would they improve the braking power?
- estimated cost

thanks heaps

Dan (almaden) · 05-06-2008, 10:40 PM

Boxster monoblocks.

rdrr · 05-06-2008, 10:50 PM

Rather than answer the question, I'll ask why? Are you having any specific problems with your brake setup? If not, there are probably better ways to spend your money.

I use my car (same brakes as yours) on the track (and street) without any problems. I did add some additional cooling using the 993 scoops, but that's it.

I hate to say it, but do a search on this topic - it's been discussed many times.

rdrr · 05-06-2008, 11:12 PM

Here's a few threads for you:
Upgrade brakes for my 87 911
Brake options for my 3.2
brake upgrade 911

MELO-911 · 05-07-2008, 12:06 AM

Thanks for that, like you said plenty on info. some reasons for wanting to move to bigger brake package is wanting to go on the track and also looking at adding 17's to the car.

questions answered and end of topic

thanks again

rdrr · 05-07-2008, 12:29 AM

No worries. I would recommend taking it to the track with what you have first - just put in some fresh brakefluid, possibly some track-oriented pads and make sure your rotors are in spec. As I mentioned I have been taking my car to the track for about two years without problems with stock rotors and calipers.

Have fun at the track!

KTL · 07:13 AM

Quote:

Originally Posted by rdrr

No worries. I would recommend taking it to the track with what you have first - just put in some fresh brakefluid, possibly some track-oriented pads and make sure your rotors are in spec. As I mentioned I have been taking my car to the track for about two years without problems with stock rotors and calipers.

Have fun at the track!

Agreed. But not possibly. DEFINITELY. Track pads are key to keeping your brakes from fading when using the stock brakes. Most people aren't willing to invest the modifications/effort to get ample cooling to the brakes, so pads are your only choice when dealing with the stock brakes. Removing the splash shields certainly helps too.

I've done the 993 and VCI (964) brakes on my car. As time goes by and my abilities improve, i'm leaning toward switching back to the stock brakes. The key is getting lots of cooling air to the brakes. Bumper ducts or 993 scoops are the way to go. Along with proper pads.

911st · 05-07-2008, 07:30 AM

Cool air is lighter than big brakes.

JeremyD · JeremyD's Garage

and depends on the track, the tire compound, the size of the tires, the weight of your car, the hp your car produces, the air you are able to funnel to cool the brakes and your driving style/ability.

any combination can put you on the other side of the brake puzzle.

RWebb · RWebb's Garage

Quote:

Originally Posted by 911st

Cool air is lighter than big brakes.

Now THAT is the best, most succinct way of putting it I have EVER seen.

Deserves to be carved in stone (or Titanium or composite ceramics or something).

KTL · 05-07-2008, 12:59 PM

Guys that are anti-brake upgrade need to see the numbers (unsprung) to see that the brake upgrade thing is not as big a hindrance as some suspect it to be. I'll find where I put these numbers and post them. You'd be surprised that the 993 vs. the stock brakes on a Carrera are not that much heavier- iron calipers are HEAVY.

Brakes are all about thermal mass. Cooling is a big part of it, but the thing you're cooling is the most important- THE ROTORS.

911st · 05-07-2008, 01:21 PM

Is $500 in cooling & $2000 in driving lessions faster than $2500 in big brakes?

(I know, I still like the doodads to.)

DYB · 05-07-2008, 04:51 PM

MELO-911

Nice car and great spot you are in down by the cott golf course.

You will find the brake question covered in every possible way on this board. Bottom line is that if you are starting out on the track the best value for money is racing brake fluid and racing pads. Get a set of R spec tyres and you will have alot of fun. Messing with the current setup by adding things like boxster fronts can have some hidden traps if you dont do your research. Unless you are adding lots of HP to you car the stock setup does a pretty good job.

You will find that the general consensus seems to be the stock setup stops well and the only real concern is degregation due to heat build up. Doing a brake upgrade right will cost quite a bit and your money is probably better spent elsewhere on other upgrades.

MELO-911 · 05-07-2008, 07:11 PM

thanks for the comments, have read them and ill probably go to a few track days and see how i go and when things get serious ill look at upgrades etc if need be.

all have good points and i have probably have more questions now on what i really want to achieve and how to achieve it. bit new to 'racing' and reading some posts thought i would do the brakes upgrade for both some bling seeing i would like to get those 17 replica fuchs on and also for wanting to get out and really drive the car.
speed limits here in perth are getting lower and lower even though we are making roads bigger (dual carriage ways)and also these new 'anti hoon' laws are starting to really be imposed. dont me wrong 110km on a 60km is bad especially around homes.

anyways thanks to you and i see how i go. one last question anyone know who is a distributor for the Rota Fox wheels here in Australia.

yeah was a nice day to take a pic

cheers

EarlySport · 05-07-2008, 07:40 PM

I am the distributor for Rota Fox in Australia. Availability is scarce now though. See www.911parts.com.au

Thanks,

KTL · 05-08-2008, 10:18 AM

Quote:

Originally Posted by 911st

Is $500 in cooling & $2000 in driving lessions faster than $2500 in big brakes?

(I know, I still like the doodads to.)

Depends on your abilities! And I can put together a brake upgrade a lot cheaper than t $2500!!

I agree with most that the brake upgrade thing is at times very overemphasized. Still, in the long run I think it pays off. With stock brakes on the Carrera, you bleed brakes very regularly (most just as a precaution, not because fluid boils constantly), you rebuild the calipers frequently, pads get used up pretty quick and so can rotors. It's almost like race car maintenance. With my brake changes, my pads wear VERY long, fluid flush happens maybe twice a season and that's with minimal cooling aids- front scoops and no splash shields. PF 97 race pads for my calipers (964) are actually cheaper than Carrera pads

That's not to say the brake changes are without fault. There's some little nuances of them that are bothersome, like tight clearances and pad overhang in my case. But on the whole I think it's worthwhile. Others obviously disagree. I get crap from my local buddies all the time about my brakes, like I wasted my money. Maybe. But i'm not the one always wasting brake fluid and eating up pads at a brakeneck (pun intended) pace.