Hi, any scuderia using castrol srf brake fluid? Any problem? My caliper is leaking brake fluid out on track day Thanks in advance Sent from my iPhone using FerrariChat
...unless he means its purging from the reservoir. Could be old/boiling/unsuitable/overfilled if that is the symptom.
It’s leaking from the caliper ‘s 2 outlet holes, I saw that the rebuild kit don’t have the new outlet valves, anyone know where to get a proper renew kit for it? Sent from my iPhone using FerrariChat
are you referring to the two bleed valves on the calipers? If so, have you double checked the valves are tightened down?
Superperformance stock the bleed screws @£4_64 each, if that is what is leaking, if the landing which these bleed screws tighten onto is the source of the leak you will have to make a grinding dolly to refurbish the sealing surface
It is 100% tightened, some pros did the job for me, from what I ask , because I did like 10 hot laps (5km track)in a row and the brake start to boil and the pedals are going down around 7/8th lap, then I went into the pit and saw that there are some liquid marks on my caliper, then I changed all my srf and flushed system and bleed it, then I went out for 3/4 laps and it was fine, brake became tighter again, however before we finish the day, I took it out and bang for like 8/9 laps and at around 7th lap, brakes are getting soft again, and I saw the liquid marks on caliper again Sent from my iPhone using FerrariChat
It is either coming out the bleed screws or the seals are leaking, which is it. i have a thread on here re CCM brakes, so look at that. I am fitting new pistons and seals due to some of the pistons being seized. Take the wheels off and see if any of the ccm discs are hard to turn, if the calipers are not letting off fully the brakes will overheat
Thanks will try that. don’t understand why I can’t post pics o the app. I am going to rebuild the kit, and does anyone know if stock disc can handle rsc3 Pagid pads Image Unavailable, Please Login Image Unavailable, Please Login
1-are you seeing fluid at the base of the threads meeting caliper? 2-are you see fluid on the caliper body where it looks like a witness trail in black? 3-are you sure the fluid volume you see on caliper or thread base more than the residual left in the bleed screw hole left after bleeding? Sometimes this boils out but the seal is fine. 4-are you sure your spongy pedal is from fluid loss vs. boiling fluid? 5-are you using stock OEM bleed screws in the caliper? 6-after the heat cycle and leak once car is cold are the bleed screws loose ot tight?
It’s because all the brake dust fill up the holes, it’s stock ccm brake disc, Sent from my iPhone using FerrariChat
The car is all stock, with hel ss brake lines and Pagid rsc3 pads, I think it’s boiling fluid, from I saw on the caliper diagram, the bleed screws don’t have seals in it, it’s like a fish eye bolt directly to caliper without any plastic in between, is that correct? Sent from my iPhone using FerrariChat
The bleed screws are metal to metal, the end of the bleed screw matches a landing in the caliper body. Never seen a ccm disc full of dust like that- do the discs turn freely when jacked up
Yes, they do turn freely, it happen whenever I track the car, even with stock pads, problem is the same, from what I have been told, it is that my brake fluid are boiling, I should cool down the car every 3-5 laps Sent from my iPhone using FerrariChat
I went to the factory for the driving course and we were not having your trouble, too heavy footed mate
Likely you have seized or sticking pistons in the calipers. I suggest they be checked. Racing Brake has a nice rebuild kit. I suggest the blue high temperature seals option. https://racingbrake.com/fa-61bsp/ Sent from my iPad using FerrariChat
You probably have seized pistons in the caliper, is this on the front or the back calipers. How many disks are hard to turn. Search for my thread about rebuilding the calipers- you will need to make up some tools to get the pistons out of the calipers. Hill Engineering do sets of pistons and seals to overhaul the calipers. Ferrari and Brembo do not do repair kits. This is what my pistons looked like Image Unavailable, Please Login I can send you details of the way to het the old pistons out as not an easy job
They pop out on their own . Just take caliper off the brake disk, rest it or tie it down somewhere around in the wheel well, and pressurize the system with 15psi (with your Motive bleeding brake kit) .. out they all come. If one is stubborn, just pull it out Yes, you will make a mess, and yes you need to stop the pressure quickly... but you have them out in no time. You will introduce air in the system, but it doesn't matter, you do have your Motive bleeding brake kit no?
Based on my experience, you will be lucky to get them out that way. Once you have one out you have lost the pressure and you need to fill the hole left with a blank. Took me all day to get the 6 pistons out of my front caliper. They are fairly easy to get out if no corrosion, but you will not pull them out in a month of sundays if corroded like mine- see pics on my previous post
Yeah, once it pops out, yes. but they will all slowly come out enough so you can grab them and pull them out with a big plyer and a rubber pad so you don't scratch them (or at least what I did). If the piston was not too badly corroded or damaged, I got away by sanding them off with 1500, 2000, 3000 sand paper, then polishing with metal polish. New seals.. like new braking system. Just what I did on my right side, but it wasn't too bad, barely marked. Same thing on my M3 ... sanded and just seals replaced. 3 track days later, she still runs like a champ.
