Brake Upgrades for a 4 lug, what's available Options

[jmitro]

true. do you use brake cooling ducting?

[jd74914]

I have heard many horror stories about vented rotors cracking on track cars.
There certainly are those that do it, but would it be a benefit for your application?

Vented rotors cracking? Drilled rotors-most certainly, but vented are pretty robust. (IMG:style_emoticons/default/smile.gif)

[mepstein]

I have heard many horror stories about vented rotors cracking on track cars.
There certainly are those that do it, but would it be a benefit for your application?

Vented rotors cracking? Drilled rotors-most certainly, but vented are pretty robust. (IMG:style_emoticons/default/smile.gif)

Yea, its a problem with drilled rotors. Vented are on most everything. I cant imagine how heavy the rotors would be on the cars with BIG brakes if they were solid. Carbon fiber excluded.

[stugray]

I have heard many horror stories about vented rotors cracking on track cars.
There certainly are those that do it, but would it be a benefit for your application?

Vented rotors cracking? Drilled rotors-most certainly, but vented are pretty robust. (IMG:style_emoticons/default/smile.gif)

Sorry. Since he was talking about 4-lug upgrades and vented rotors, I thought 'drilled rotor'.

Yes if you have 911 style vented rotors, then they do not crack like stock (solid) drilled rotors.

[Racer]

bumping this thread as I'm contemplating my options for brakes (vented rotors??) on the car for occasional track use. Car will be close to stock weight, I weigh 175lb, and the engine will be 120hp.

I have brand new solid rotors with PMB 5lug conversion, rebuilt calipers, new pads, lines, proportioning valve, 19mm master cylinder.

I brake about as hard as I can from 110 MPH (with 215 Hoosiers) on just one of 10 corners at the track, and do that for 20 minutes without stopping.
I have only detected brake fade a few times

based on your experience, I'm thinking my desire for vented rotors is probably not necessary?

thoughts?

I'm using my stock Boge strut bodies; if I want vented rotors using Porsche calipers and 5lug, I'm assuming the only option is to convert to 911 front struts?

Occasional track use will come down to driver skill and the tracks involved. Going back, I had a 2056/4 with 4 lug stock brakes. Like most track diving geniuses, I knew the only way to go faster was to improve the car (since the drover was already perfect ; ) ) .. So after 2 years of saving my pennies I upgraded to 911 front end (3.2 Carrera brakes) and never had an ounce of brake fade thereafter. For me, I was running 4-5 events (10-14 track days/year).

Yes, the 5 bolt 911 brakes are the solution, hence the factory using them on the 914/6.

The stock brakes are fine for a stock car and can likely handle up to 110-120hp. Track driving is about HEAT management. If you want to avoid the $$ to change to 911 brakes, do what others have done:

1) Quality lines
2) Quality fluid
3) Great brake pads
4) AIR - Get lots of air to the front brakes
5) Learn to drive better (brake less, carry more speed).