rusnak

The plastic clamping pliers are great. A bit overpriced, but they're better than hose pinch thingies with the thumb screws.

Edward

FYI and potential heresy alert:

I've permanently blocked off the reservoir vent hose on both my SC and 993; done so for sooo long now I can't remember. No need to fuss with clamps as it's a waste of time and energy, IMHO. I personally don't see the need for a vent in this application. Even at the full mark, there is still so much room for expansion (like brake fluid is really going to expand that much!) in the reservoir, and if you're still OCD-concerned (needlessly), then fill to 3/4 full and rest easy. I've never, ever, had any mishap in over a 10+ years (coming on 20?), and even with both of them slogging it out on the track in brutal heat.

Clearly the engineers put the vent hose there for a reason, but I'm not seeing it. And the benefit of having it closed so I don't forget for that next time I bleed the brakes outweighs whatever non-negatives I've never experienced. Just my experience, FWIW.

Edward

theiceman

isn't the vent so the master cylinder can actually draw the fluid as it needs it ? how would it draw fluid if there were no vent ?

Edward

Good point, Ice. I had thought about that, but I figured that the reservoir really isn't perfectly air-tight sealed (as in absolutely impervious) and the infinitesimal amount of fluid drop that occurs due to brake pad wear is soooooo slow and gradual, there is no doubt that air will make its way into the reservoir to compensate for said fluid level drop. And when I had first done this those many moons ago, I remember monitoring my brake performance and fluid use carefully (at the track where any weakness or duress will show!!!). No diff whatsoever.

So let's just say that's my theory. In the nearly 20 years of both my SC/993, I've not had any issue with the vent tube closed shut. That's clearly not absolute proof, but close enough for me to continue to leave it as is.

Edward

theiceman

I think it practical terms you are no doubt correct Edward. But you know those Germans " it has a lid on it , why wouldn't it be sealed !! "