S brake conversion & caliper rebuild - 986 Forum - The Community for Porsche Boxster & Cayman Owners

ekam · 07-10-2010, 03:56 PM

High quality shot of the caliper and rotor.

chaudanova · 07-30-2010, 01:46 AM

Ekam, any updates on your brake project? Did you end up getting your front brake calipers installed on the rear?

ekam · 07-30-2010, 05:16 AM

Thanks for reminding me. I'm going to pickup the old front calipers tomorrow from the powder coating shop.

Next step is ordering the rest of the parts (caliper spring kit, screws, bleeder valves, pads & rotors).

After the front brake swap, braking is more confident. You can feel there's always room to spare.

chaudanova · 07-30-2010, 08:22 AM

Quote:

Originally Posted by ekam

Thanks for reminding me. I'm going to pickup the old front calipers tomorrow from the powder coating shop.

Next step is ordering the rest of the parts (caliper spring kit, screws, bleeder valves, pads & rotors).

After the front brake swap, braking is more confident. You can feel there's always room to spare.

haha, sounds good... Looking forward to seeing how the rest of your project unfolds.

So, as of right now with just the only change being the front S calipers, and new rotors/misc. setup, do you like the braking characteristics overall? I know some will say that it might upset the brake bias, etc... But would you say that it has been a solid improvement thus far, and have you experienced any downsides yet?

Thanks in advance..

ekam · 07-30-2010, 08:44 AM

It does require less effort on the brake pedal to slow down. That being said, my previous front rotors were toasted and the pads were on their way out.

I haven't been to the track yet so I can't say much about brake bias. If you look at the difference between the base vs S rear caliper/rotors, the S rear rotors are 300mm diameter and 22mm thick vs base 292mm and 20mm. I assume piston sizes are identical (since the base & S front calipers piston sizes are the same). Those .2" bigger S rotors won't make much of a difference if at all. The added thickness is mostly for cooling.

There's all kinds of arguments out there, but most car suspension & brakes are setup to have tendency to under-steer. Putting stronger rear brakes might correct that a bit.

ekam · 08-01-2010, 10:46 AM

I'm doing so more research on parts needed... apparently Brembo makes a special rotor for the base Boxster to use the S rear calipers. Problem is nobody knows where to get this mysterous part. Can't locate this on the Brembo catalogue webpage either as it only shows front rotors for the base boxster.

What brake upgrades do we have for base Boxster?
http://www.boxsterforum.com/forums/showpost.php?p=23054&postcount=3
http://www.6speedonline.com/forums/boxster-cayman/112389-brake-upgrade-2.html#post1578029