Another Master Cylinder Reservoir headache thread, Hose fittings would have been nice, porsche Options

[betz]

I did a lot of searching but none really have quite the same issue I'm having.

So I installed a new master cylinder a while back, wrestled around with the reservoir flared fittings into the grommets, etc etc, finally got it in somehow.

FYI- this is a URO parts master cylinder. I am wary of URO parts not always being the best quality but the @UROpartsman seems to stand behind their products and makes revisions based on feedback so I trust it well enough.

So anyways, got it installed, but it was leaking just small little drops from the reservoir fitting towards the front of the car. Enough to drain the reservoir overnight. Did some searching and saw that many people forget the washers. But also see the Uro master cylinder has them pre-installed as of a recent revision.

I take the safe road and buy a couple of washers, right part number genuine porsche. Pull out my master cyl again, pull out the grommets, of course it already had washers in there. Since I got this far I replaced the washers anyways, and reinstall everything.

NOW, it doesn't drip drop. It's a constant stream, leaking like a sieve. Front fitting again, the back one if it leaks, doesn't leak nearly as much. I wrestle with the fittings even more and may have gotten it down to a profuse drop. But the fittings were pushed all the way into the cylinder as far as I could tell! No amount of wrestling got them any further. And I was pushing into it pretty hard. Seems like maybe the angle had an effect on how much it was leaking. But is it really to the point that you need to just get them in just perfect or else it will leak? Seems like normal driving could move it around. I would think it's just, if it's in it's in.

My solution for now is I guess I'll buy new grommets? I'm just wondering if there's any case that that the flare fitting is only partially seated, or did I just wrestle with it too much and somehow damage the grommets? How can I tell it's seated?

Anyways I got some Ate brand grommets on the way since that's the only thing I could think of causing the leak.

Would appreciate any insight, thanks.

[UROpartsman]

Exactly right, just noticed the bump, has to be a different casting.

You're also correct about that MC from A.A.; it looks like our first-gen cylinder, which was discontinued in late 2018. Sent you a PM about replacing it with the new version.

[betz]

Exactly right, just noticed the bump, has to be a different casting.

You're also correct about that MC from A.A.; it looks like our first-gen cylinder, which was discontinued in late 2018. Sent you a PM about replacing it with the new version.

I appreciate the offer, but I did just get this new MC in, so I don't really have a need for it. It sounds like the early Uro MC had some issues with the reservoir lines leaking which was apparently corrected in the latest revision.

And this sounds pretty in-line with what happened on my install of the 914rubber MC. I marked with silver sharpie where the lines should go up to, but no matter how much I struggled and gave the lines plenty of leverage, with the help of my Knipex pliers even, it would never settle past just below the silver line I made. I finally said, screw it, let's just see if it leaks. It was close enough to the silver line that it seemed like it could actually be in, not to mention both of the lines were consistent at the same level. And it wasn't like it went in easy in the first place.

Anyways, finished up all of the lines, filled up the brake reservoir about an hour ago, and so far no leaks! I will have to check again tomorrow, but, I don't see how I could possible get it more "in". I think during the first go around it might have actually been the grommet, since I had a similar experience. As it sits I can push the line down a little to the point the silver line is touching but it just settles back to the position in the pic. I'm thinking maybe it's in but the flared line pulls it up a little?

Clearly I wasn't as delicate with this procedure as most people- I caused some scratches from my efforts but you can see the fat silver line just above where the grommet is.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22593-1603763197.1.jpg)