Big brakes, what rotors are ok? F355

I think I have the same kit as you, and it was the stock 550 front rotors
If it fits the stock wheels, it should fit The Challenge wheels.

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Eric 355 did that setup when he had a 355.
A search should show what he did

 

Actually now that the diy thread works check this out
https://www.ferrarichat.com/forum/threads/a-not-so-expensive-brake-upgrade-for-f355.258160/

 

There are some front big brake kit, but for example AP Racing does not make a rear kit.

Stoptech is probably the best solution to upgrade front and rear

The max size for the rotor possible is 355mm and it fits the Challenge wheels

 

I have a massive front rotor set up from stop tech at 14” drilled and slotted . The Calipers are brembo with an expansion block. On the rear they are brembo 355mm brembo with drilled rotors. I oscillate between Challenge wheels and stock wheel setups. I find the challenge wheel a noticeable performance upgrade but I like the stock look.

The big brake kit is a necessary mod and replaces the “girly man” brakes that the car comes with. Massive difference in performance with these.

EDIT: Make sure that you get rear rotors to accommodate the emergency brake. That is a must. I don’t like mods that adjust the cars functionality.

 

For the guys that upgraded brakes, did you also modify the stock Teves ABS system?

 

I have Stoptech Trophy front and rear. You don't need to change master cylinder,
Stoptech picks the caliper piston to take that in account.

 

Challenge cars has a sport calibrated abc ecu I think part number was 176516 vs the stock 148838, better check I could be chlorinating again

 

I do like the look of the big brakes but mine allready lock up the wheels so not sure why you need bigger ones other than the cool factor

 

Virtually any brakes can "lock up" the tires (or engage abs) when cold, the issue with is with heat and fade over continued use. Do a few laps on a track and you'll understand. Fade, overheating, boiling your fluid are not fun after a long straight.

 

Mine doesn’t “lock up”. But it feels so much more robust.

My stock brakes would get “wooden” when really pressing the system for long periods of time, just knowing the hyper braking power is there gives you confidence to press the car more without braking because you know the safety of “bear claw” braking is available at anytime to reel you back in. Plus the cool factor in how it looks is worth the price of admission by itself.

3 piston set ups for the 355 will require more pressure power support ie master cylinder upgrade etc... but if you stick to the 2piston front and back, your good to go with the stock support setup. The BBK is a must for the 355 enthusiast who is keeping the car and who wants to get the most out of it.

 

Yeah more pistons will require more pressure

Have some big lambo 8 pistons that Im thinking of going to with 19 wheels, I think I can butter their hips and slide them in

 

Err, not necessarily.

take 4 pistons with a combined area of x and then compare it to 8 pistons also with a combined area of x.
The pressure on the brake pedal (or caliper piston) will be the same.

But most often, more pistons equals more piston area and thereby LESS pressure applies the same retardation forces.

 

Correct, you might need the upgraded master cylinder to give more VOLUME to get the same pressure.

 

Pressure loss due to swell in the hyd play a factor al

Yeah we missed a setup on a hot rod with these big brakes, just touching the pedal went full brake, went with a bigger bore master and modulation is perfect now

 

So...Will these rotors work:
https://ceika-store.com/products/coert55?gclid=EAIaIQobChMIsp_5jsuf3gIVUQOGCh3SvQX4EAQYAyABEgJahPD_BwE

With these calipers and adapters?

https://www.paragon-products.com/Porsche-Big-Red-Caliper-p/10.0567.004.htm
https://www.paragon-products.com/Racers-Edge-Porsche-Suspension-p/re_mc-6000.htm

Or will they be offset 50mm due to not being the Big Black calipers?

That all comes in decently cheaper than the stoptech kit to where it might make sense to do, just want to make sure it all works (and what needs adjusting) before I start ordering parts.

 

I think those brackets may need a shim or something similar, cant remember

The thread posted a while back had what it takes

 

Yeah, I remember them needing a few washers to move the caliper out, I'll have to go do some digging. There may have also been a better bracket that worked without adjustment.

 

I forgot who made a few brackets I have 2 of them here I can measure something if you need it. I believe they were for big red calipers

 

My impression was that if you increased the number of pots in the caliper, you would need to change the master cylinder.
My Brembo set up is 2 pot per corner but the pots are much much bigger and the Calipers are huge compared to the originals. It seemed to take the master cylinder more time to "pressurize" also when installing. My dads 550 has a three pot Brembo set up. When I'm back in town, i will check out the master and see if it was upgraded and report back.

 

Maybe there is another calculation on clamping force, but I've always thought the volume was roughly the same with callipers with more pistons.
Example, 2 3in pistons have the same area as 4 2in pistons. or 8 1.3in pistons

 

Its all about how much pressure the master can put into the calipers. Put it in too fast you loose modulation just goes to full brake mode. Stock masters useally are the sweet spot