[thomschoon]

Originally Posted by Jase007

Thom:

Have you crunched any numbers on how much more pad swept area % and rotor thermal capacity you'll have now versus what was on the SC?

With the SC's weight the same (roughly) I wonder how much "less harder" [good english - here for you anal types that need to correct] this setup will have to work versus stock or what % of total brakes [if there was such a fuel guage that could continuously fiigure in severerity and frequency of use over a given period] you will now be using. Heat temp strips on the calipers at a DE will let you know ... as long as you drive the same before (SC setup) and after (993 setup).

Have you seen the new Rolls with a power reserve guage ... same thoughts about your 993 brakes ... capacity and spare capacity.

Good looking install. New Weltmeister sways tucked in there ...? 8)

Cheers,

Jase

The front rotors are 310mm X 32mm, versus 282.5 X 20mm stock
The rears are 309 X 28mm versus 290 X 20mm stock

The brake pad areas are:
front 125cm2 versus 76cm2
rear 86cm2 versus 53cm2

It should provide a lot more thermal reserve as well as bling effect , and you are correct on the sway bars. 8)

[}{arlequin]

that's a sweet setup... I always get brake envy... does this system fit under 15" wheels like the 930 system or is it too big b/c of the calipers?

[Marc A]

Only the old 930 set up, and the boxter monoblocks fit under 15" fuchs and cookie cutters. I have a feeling, but never tried, that the early 951 calipers fit as well, but I am not sure about this.

[Vicegrip]

Just remember that brakes that are bigger than needed will only make you SLOWER! They are the worst kind of weight both unsprung and rotating. Add cooling first. Cooling cost nothing in the "I wanna go faster" department.

Can you lock up the tires? If not change pads or rebuild. Do the brakes overheat on the track? If yes rebuild and do a total flush then add cooling if still happening. Adding bigger brakes to the above if existing conditions are not corectable will not make you any faster. (They might look good but this is not a looks kind of a gang now is it? )


Nag over.

[Jazzbass]

Originally Posted by Kurt Mickelwait

Just remember that brakes that are bigger than needed will only make you SLOWER!

Maybe, but they look soooooo cool.

[}{arlequin]

can the boxster caliper accomodate a 930 rotor?....

how about the 28mm x 299mm rotors off the '86 944 Turbo?

Marc, do you use the 19mm master or the Mercedes 23mm? I'm assuming the monoblocks are the front pair, right?

[thomschoon]

Originally Posted by Kurt Mickelwait

Just remember that brakes that are bigger than needed will only make you SLOWER! They are the worst kind of weight both unsprung and rotating. Add cooling first. Cooling cost nothing in the "I wanna go faster" department.

Can you lock up the tires? If not change pads or rebuild. Do the brakes overheat on the track? If yes rebuild and do a total flush then add cooling if still happening. Adding bigger brakes to the above if existing conditions are not corectable will not make you any faster. (They might look good but this is not a looks kind of a gang now is it? )


Nag over.

You have several valid points:
No I couldnt lock up the brakes even after a rebuild, new pads, etc, could also be the 9" wheels with the 255 tires offering up just a whee bit too much stick.

Do they overheat? the car will never see the track as that would send me back down the slippery slope into SCCA and poverty. But I guess it would give me some time to look for another wife as the current one (#2 & who is positive cash flow) would be gone. Been there done that

Bling effect - what the hell its a money pit anyways and I only get to visit it two days a week as it is so I might as well have fond memories

At some point the next owner may need all the upgrades

Enjoy the day
thom

[Vicegrip]

Sorry, did not mean to sound like a fuddy-duddy. I contracted bling-bling gland cancer many years ago from eating too many mushrooms at Led Zeppelin concerts and never fully recovered.

[BobNovas]

Thom - I find it hard to believe you can't lock up the wheels. Usually, the problem is brakes fading because of heat buildup leading to boiling the brake fluid, causing the brake fluid to go from the incompressable fluid state to the compressable gaseous state, leading to soft pedal and then pedal to the floor. With luck, you can usually pump some brakes on.

Brakes don't get hot when they're locked up, they got hot when the brakes are on and the wheels are turning, transforming kinetic energy into heat energy. Brakes can develop an enormous amount of horsepower, (energy over time), like upwards of 500 to maybe 800 HP. So if you can't lock at least some of your wheels up, you have a different problem. For example, if you lock the fronts but not the rears, then you have a bias problem with too much front brakes.

Like Kurt sez, cooling, cooling, cooling is key to heat dissapation.

[thomschoon]

The brakes were very low on my list of things to do until I had a panic stop on the 95 and almost didnt get it hauled down. The real issue was probaly that the brakes were not warmed up enough to grab properly but freeway driving is real world for me. So , I started looking around and got a couple reasonable deals and it moved up on the list. I agree there were other options, but then it also happened the day after my annual bonus hit the bank so my judgement was clouded by disposable income.

But I will also say that after I installed the Turbo M/C I took it for a drive and almost ate the steering wheel.