Pcplod

Working on my heater valve, and found out the old one was still working. Had the new one from Roger so I decided to go ahead and just replace it. So far, so good.

Started to check out the vacuum lines and tried to pull off the main line coming out of the brake booster. Needless to say, it snapped right off in my fingers! Immediately followed by new words for my daughter's vocabulary!

I am thinking that this is surely a part that just pulls out and the new one pops in, because in PET I see that it lists a rubber grommet in the brake booster, but I can't see where it lists what goes into the grommet... Anybody know what that part is called and if Roger or one of the others will have one??

I included a pic for clarification. Thanks for the help.

SQLGuy

Looks like it's called a Check Valve: 928 355 660 03

Edit: BTW, I remember breaking one on my '85 just brushing against it while doing some other work. Those things get to be very brittle after a while.

brutus

You have to consider that pretty much all the plastic and rubber under the hood has been cooked to death by now. Result is most anything you pull on, move, or even touch has been waiting for years for an excuse to fall apart. None of that stuff was designed to be used for 20 years.

ROG100

We sell lots of those - replace the valve and grommet.
In the mail on Monday

Pcplod

Thanks everyone!! I just spent 15 minutes on the phone with Roger and he not only assured me that the parts will be in the mail on Monday, but also gave me a quick primer on how to beat the heat out of my HVAC system!!

We sure do have some great people on this forum!! Can't wait to meet lots of them in two weeks!!

SQLGuy

Which annoys the he!! out of me. If they used metal instead of that cheap plastic, these things would last 100 years. I might be a bit less annoyed if we were talking about commonly used commodity parts that would be easily available in the aftermarket; but when you're talking about stuff available only OE, and Porsche stops making them (ala the coolant level sensor)... And they're still doing this stuff, like with the plastic coolant pipes in the Cayennes!

Anyway, rant over, and I expect this part is easily available from the usual sources.

brutus

Porsche has no interest or desire to have these cars last 100 years. They wish to get sales up to 200,000 units per year. So four door sedans, trucks, reskined V W s are part of their future not just collector cars.
Porsche would be quite content to see all the 928s off the road and everyone here buying one of their new cars or their late model lease returns.

Pcplod

Ummm...News Flash for Porsche. I can't afford one of their new cars (or probably even one of their late model lease returns)!!

Speedtoys

Metal..and the car would weigh 5000lbs.

And like a later poster said..theyre not meant to last 100yrs and be used.

destructo_low

I broke the smaller check valve nipple last weekend that comes off that connection. Maybe it's just an '83/'83 model thing.

I actually have a couple of vacuum connectors left off my car that I saved when I replaced my lines.

I will send you the connector, or you can use needle nose to crush the broken nipple and dig the pieces out with a mechanic's pick.

MGW-Fla

Yeah about 4 1/2 yrs ago when I did a refresh of my vacuum hoses I was naive in thinkin that they would be flexible & just come apart easily from the connectors. That hard plastic was much more of a pain than I anticipated. I had to cut some of the connectors with a razor to get them apart. And more than one hose snapped at the connector. All ended up well, but it sure took me much longer just to replace those little hoses & connectors than I thought.

btw, Speedtoys, your avatar is Awesome! I typically find while driving that I simply CANNOT sit behind a Prius for very long, for some reason it just starts to irritate me too much!

SQLGuy

I don't think weight is the concern. Audi put a metal HCV in the 5000, which was a normal sedan. Porsche put a plastic one in a car meant to run at 160+MPH. The plastic one has been known to disintegrate during track events, putting other drivers at risk. I'll take the penalty of a few extra ounces for the safety factor.

In the Cayennes you have the option of installing metal coolant tubes (a Porsche item) after your plastic ones have failed. Only about $1200 for the replacement...

There are a lot of places in our cars where it's obvious that Porsche went out of their way to ensure reliability and longevity. Alusil is one example; the quality of brakes they put into the 928's, and into their current cars, is another.

One of my other passions is watches. A higher end watch is really designed to last generations. I know Porsche is going to take the easy way on a lot of these little parts, but I still kind of wish they didn't. A Porsche is not basic transportation any more than a Patek Philippe is the required basic level of timekeeping. PP's sales don't suffer because of their longevity, and I rather doubt that Porsche needs to rely on a mechanically enforced planned obsolescence either. Most people that buy new Porsches repeatedly would buy their next new one even more enthusiastically if they knew their old one would hold more resale value due to the brand's longevity.

dr bob

Recent MBA's running car companies now seem to be short on passion and history. The reasons we buy and love the better cars is because they really are better in more ways than price. The sellers want to sell a car that makes it through the extended warranty period without falling apart, then immediately needs to be replaced with new. Whole car, not just parts.

IcemanG17

25+ year old car is going to have lots of little issues......rubber bits dry out and leak-fail.....

Its a constant battle staying on top of this little things....but worth it, a well running 928 is something special