WTF? Wristband on master cyl.

[n2x4]

Ok,

I just picked up some 05 WRX calipers (I think I did ok - $110 shipped with pads).

Anyways, the guy tells me to "bleed the brakes and add a wristband over the master cylinder reservoir to keep moisture out"

Wristband over the master cyl? Is this guy for real? I don't get how that will keep moisture out. I get the idea but can't imagine that it would be that absorbent.

[Dynamic Entry]

ya weird, that reservoir is the best sealing/closing thing in the engine bay......

[cheno SLO]

JDM ya`ll

Looks great in any engine compartment

[Legacy777]

Are they fucking kidding......?

I challenge someone to tell me how moisture is going to not get past that "wristband" yet get past a rubber seal.....

[skid542]

The wristband is a vital component of the braking system. It's sole purpose is to provide an additional barrier to moisture. However, and this is the big one, it has to be a StopTich brand wristband. The StopTich wrist bands have a special compound in them that, when heated with the latent heat in the engine bay, cause them to swell slightly. This swelling causes the fiber weave to close up creating an air tight seal over the joint between the cap and the resevior. Without this seal, moisture will work its way into the system through a very chemically complex process called "reverse dot-mosis". Upgrading the brake fluid from a standard 3/4 DOT fluid up to a 5.55 DOT fluid will slow this process. It is important to note that it only slows the process, does not stop it.

This is why the wristband is so critical. Truthfully I am amazed that none of the other technical guru's have heard of this!!!

[555BCTurbo]

Now...I am not a ricer and I am by no means defending those stupid things...


But their actual purpose is:

In Japan, many of the race tracks require those things to absorb any excess brake fluid from heat expansion or extreme cornering that may leak, so that it does not end up on the track.

[Legacy777]

But their actual purpose is:

In Japan, many of the race tracks require those things to absorb any excess brake fluid from heat expansion or extreme cornering that may leak, so that it does not end up on the track.

This I could see.

[skid542]

Ah. Thanks Nick, I can buy that.

[AWD_addict]

At least it would keep the res cap less dusty in between JDM track sessions.

[n2x4]

Now...I am not a ricer and I am by no means defending those stupid things...


But their actual purpose is:

In Japan, many of the race tracks require those things to absorb any excess brake fluid from heat expansion or extreme cornering that may leak, so that it does not end up on the track.

Best answer I've heard. Lateral G's FTW!

[BAC5.2]

On motorcycles we used them to keep sunlight off of the clear reservoirs, as sunlight breaks down brake fluid.

Motorcycles are obviously faster than cars, so their secret must be the wristband.

[greg donovan]

On motorcycles we used them to keep sunlight off of the clear reservoirs, as sunlight breaks down brake fluid.

Motorcycles are obviously faster than cars, so their secret must be the wristband.

and you can see a motorcycles engine, so isiggest that the hood be removed to achieve maximum velocity.

[A1Fiddler]

On motorcycles we used them to keep sunlight off of the clear reservoirs, as sunlight breaks down brake fluid.

Motorcycles are obviously faster than cars, so their secret must be the wristband.

and you can see a motorcycles engine, so isiggest that the hood be removed to achieve maximum velocity.

Yes, and don't forget to remove 2 wheels when racing. Your best bet is the left front, and right rear.

[biggreen96]

will a slap wristband work? I have a few from back in the day.

[siouxbe]

during track days and really hard driving the 'wrist bands' are to prevent the hot brake fluid from expanding and leaking out all over the track, thus the terry cloth absorbs the fluid that may leak past the cap.

[555BCTurbo]

during track days and really hard driving the 'wrist bands' are to prevent the hot brake fluid from expanding and leaking out all over the track, thus the terry cloth absorbs the fluid that may leak past the cap.

You must not have read my response previously

[GodSquadMandrake]

On motorcycles we used them to keep sunlight off of the clear reservoirs, as sunlight breaks down brake fluid.

Motorcycles are obviously faster than cars, so their secret must be the wristband.

Yeah I've heard that before even though I change my brake fluid once a year anyhow and it shouldn't go bad in that short period of time. This just seems like a poser thing to me that serves no purpose...