Another Master Cylinder Reservoir headache thread, Hose fittings would have been nice, porsche |
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Another Master Cylinder Reservoir headache thread, Hose fittings would have been nice, porsche |
betz |
Oct 22 2020, 10:14 AM
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#1
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Member Group: Members Posts: 76 Joined: 22-October 18 From: San Leandro, CA Member No.: 22,593 Region Association: Northern California |
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. |
betz |
Oct 26 2020, 03:59 PM
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#2
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Member Group: Members Posts: 76 Joined: 22-October 18 From: San Leandro, CA Member No.: 22,593 Region Association: Northern California |
Through all my frustration, Mark at 914rubber was gracious enough to send me over one of his master cylinders for comparison, which I just received today.
So far I am impressed, it is clear the master is not just a rebranded Uro or Ate. While I do not have an Ate master for comparison, from the details you can tell it is unique from the Uro in casting and Ate from the rubber. The "F" and "R" for instance is in a different font, the internal channels under the washers have different routing, etc. The only immediate things I can see is better so far is that the machined surfaces are painted, which will most likely help with surface rust in the future, but probably not really have an effect on functionality. Also, the rubber grommet is closer in dimensions to the Ate grommet (same length at 0.695"), and the rubber boot for the brake lever input is a less plastic-y and a more pliable rubber. Also, pulling out the grommet to insert the washers it did not get torn up like the Uro grommet did. The washers almost didn't seem the right size at first, but after some light persuasion they went in almost like a press fit. Later tonight I will attempt finally to get this installed and hopefully be done with my master cylinder debacle, lol. Hopefully install goes a little more smoothly this time! Pics below of master comparisons. For grommets we have from left to right- Uro, 914rubber, and Ate. (IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22593-1603749543.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22593-1603749543.2.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22593-1603749543.3.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22593-1603749544.4.jpg) |
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