Looking to upgrade brakes on my 02Z. Current setup is stock rotors with Hawk HP+ pads on front, stock rear. Recently purchased C6Z51 DBA 2-piece rotors with brackets from a forum member. Plans are Carbotech XP8 front, and also upgrade the rear to DBA C6Z51 rotors/brackets with AX6 pads.

Does anyone have any experience with Wilwood AERO6 140-12629 front, 140-14026 rear? Would these actually be a worthwhile upgrade over the stock calipers ? Car is used for higher speed (80+) autox and some aggressive diving in Mexico on a regular basis.

 

First off what tire will be used? I really don't recommend XP8 front with AX6 rear. If its just Auto X I would suggest AX6 on all 4 corners. They will be fine in Mexico or If you want more heat rang I would go XP8 on all 4 at 160+ MPH pulls in Mexico. They will work fine at Auto X but you will need to drag the pedal before the line to build some heat in the XP8 to get them to optimum temp.


Carbotech™ AX6™

The AX6™ is specifically engineered for Autocross applications. A high torque brake compound delivering reliable and consistent performance over a very wide operating temperature range of 50°F to 1000°F + (10°C to 537°C+). The advanced compound matrix provides an excellent initial bite, high coefficient of friction at lower temperatures along with very progressive brake modulation and release characteristics. Many drivers use the AX6™ for street driving as well, even though Carbotech™ doesn't recommend street driving with AX6™ due to possible elevated levels of dust and noise. AX6™ is NOT recommended as a race compound in most applications.


Carbotech™ XP8™

A high torque brake compound with a wide operating temperature range of 200°F-1250°F+ (93°C to 676°C+). Carbotech™ XP8™ is the first of our racing compounds. Good initial bite at race temperatures, high coefficient of friction, excellent modulation and release characteristics. Extremely high fade resistance and very rotor friendly. Perfect for track day use with any tire and can still be driven safely to and from the track. Carbotech™ does NOT recommended XP8™ as a daily driven street pad due to elevated levels of dust and noise. Carbotech™ XP8™ is a great compound on the front & rear of most open wheel and sports racers.

 

[QUOTE=Adam@Amp'dAutosport.com;1596551869]First off what tire will be used? I really don't recommend XP8 front with AX6 rear. If its just Auto X I would suggest AX6 on all 4 corners. They will be fine in Mexico or If you want more heat rang I would go XP8 on all 4 at 160+ MPH pulls in Mexico. They will work fine at Auto X but you will need to drag the pedal before the line to build some heat in the XP8 to get them to optimum temp.

Looking at Hankook RS4. From my research I think those will be my best compromise (in my size) between performance and tread wear on the street. Thanks for the heads up on the mismatched pads. Do you think the AX6 pads will give the same or better initial bit as the HP+ with less fade?

 

Yes, the AX6 will have more bite and should not fade on the street or Auto X its good to 1000°F +.

 

These Caliper kits are a direct fit for 13.4/14.0" front and 13" (as well as 13.4" Z06 by special order) factory or stock spec oe replacement rotors.

The benefits will be a superior pedal feel and response as well as an overall better designed caliper- fixed mount, ss pistons and more robust body for flexing issues.

They can be fit with a variety of Wilwood and other aftermarket pads of your choice. You're not married to the Wilwood line.

However...a caliper change alone is not going to magically shorten your stopping distances by some great amount. Piston area in both kis is at or near factory spec meaning, while more responsive, it's not going to "grab" the rotor with any significant increase. *Pad coefficient aside.

This is true of all properly built big brake kits. The key would be more rotor mass more so than just the caliper change. More mass = more efficiency as well as more torque for the same given clamp effort. A lower duty cycle and lower temps help in the durability land.

Overall: a great buy for what they offer you. For well under 2G you can fit a better caliper, ss hoses, 14" front and 13.4" rear rotors and maximize the performance of stock spec rotors. For the buyer who is not comfortable with 3-4K in complete BBK purchases for budget or demand reasons this is making the stock system the best it's going to be.

 

^^^^
Thanks for the reply.

That`s exactly what I was looking for. What Wilwood pads would you recommend for my application, or would the Carbotech pads (do they make pads for the Wilwood calipers) be my best choice?

Todd, can you give me a price quote for the front calipers w/needed pads, and the rear calipers w/needed pads for 13.4 rotors? Shipping would be 44702

 

Carbotech does make pads for the Wilwood calipers.

 

Just wanted to make sure you realized that those larger 13.4" C6 Z51 front rotors will require an 18" rim to clear, even with the factory 2-piston sliding C5 or C6 calipers.

 

You are not married to the Wilwood pads. They ship with BP20: a performance minded, elevated temp street pad. However in addition to a number of Wilwood compounds you cna of course shop other suppliers such as Adam referencing the 6617 front and 7416 rear plate.

 

Both kits come as stated in the above post with BP20s.

Final to the door price with the necessary 13.4" rear work is $1731 in black or red. Other colors, nickel finish, thermlock pistons and race compound pads can all be had/substituted. The basics are on the webpage but to do the 13.4 stuff please call or pm me so we can send you the proper invoice for the purchase.

 

I do have 18" and 19" wheels.
Thanks for looking out

 

Thanks for the reply's.
I will get a hold of you for the proper 13.4 stuff.