mron0903

So I did a brake flush yesterday and after bleeding all the brakes and confirmed the pedal felt good and held pressure. I drove around and when I came back my LF caliper was leaking from both inner and outer bleeder screws. Now I am ASE certified in brakes and I've bleed plently of brakes, so I know how to and tighten down bleeder screws.

The spec for them are 97in-lbs and I defintely torqued them there but I had to tighten them even more to stop them from seeping. So after I redid the LF, this morning I noticed my RF outer screw doing the same thing..

Has anyone had any similar problems with bleeding their brembos?

I just don't want to sheer any screws in the brembos.

anyone had similar problems?

Wangspeed

iTrader: (2)

You shouldn't have to use this, but:

http://speedbleeder.zoovy.com/c=I3Kb...T/Sealant.html

Hopefully I won't have the same problem when I switch to track fluid.

mron0903

hmm... I shouldn't need that. This is the first time the screws have been cracked open.

I should note, what I mean by leaking is it's actually seeping through the threads.. I've never had a problem like this with any car i've bleed. Its frustrating!!

Wangspeed

iTrader: (2)

I wonder if it's the powder coating preventing it from sealing properly.

mron0903

not sure but the 97inlbs is not sealing it so I carefully tightened them up more and seems to be working now.. we'll see..

Wangspeed

iTrader: (2)

Well, I've been beating around VIR all day today, and I've been fighting the same problem. I don't have a torque wrench that goes down that low, but I'm shocked at how much I had to tighten these to make it stop. It's still not perfect, but the amount loss doesn't spill out of the little rubber cap.

Were you wringing the car out on track when it did this? It doesn't happen at street temps.

ninja44

iTrader: (1)

This is going back to bleeding the brembos on my bike......It's most likely not a leak but keep an eye on it. When you bleed the brakes the fluid is forced up through the threads a bit and it sits there. There should also be a bit of fluid inside the bleeder hole and because the weather is cooler right now it is pulling moisture from the air and that is what you are seeing. Shove a piece of paper towel inside the bleeder hole and get as much of the fluid out as you can.

Wangspeed

iTrader: (2)

Seems like an awful lot. It finally stopped after a day and a half on track. It isn't coming up through the threads, but up through the top.



I've never had this problem on other fixed calipers, including Brembos, and Alcons.

Wangspeed

iTrader: (2)

Had a chat with a certain race engineer on this forum, *cough* John *cough*, and he says it's what you're describing. It's just excess in the bleeder, not coming out. Shoot it w/ brake cleaner or compressed air.

Oh, gotta say something. Bravo to GM for using anodized calipers instead of painted. Our calipers, and the lettering, stay the same color, even after beating the **** out of them on track. Most turn ugly colors, and get nick named Brownbos.

ninja44

iTrader: (1)

Asians are always right :P Brake fluid is extremely hydroscopic and will pull moisture from anywhere it can. Sometimes brake cleaner is not enough and since the bleeder on the LNF caliper is pretty big I would use brake clean first and then shove a pointed piece of paper towel on the hole to get the rest of what's left. I went nuts when I first saw this on my bike thinking it was a faulty Brembo M/C that I just paid $500 for lol!

JT-KGY

I got my brakes flushed 2 weeks back.. just noticed the leaking...
Normal I guess?