Vacuum Lines

[Capecod 02/4S]

While replacing AOS I noticed cracks in some vacuum lines. Upon more careful inspection the cracks appear in rubber covering plastic only and probbaly are or were just fine as the car was running great. Should I rip these out and replace them while I have access?

Wondering if i may open a can of worms in doing so. Looking at what Pelican offers I only see various rubber options. Should I replace the hard preformed lines with flexible stuff or just leave them be?

[JFP in PA]

Originally Posted by Capecod 02/4S

While replacing AOS I noticed cracks in some vacuum lines. Upon more careful inspection the cracks appear in rubber covering plastic only and probbaly are or were just fine as the car was running great. Should I rip these out and replace them while I have access?

Wondering if i may open a can of worms in doing so. Looking at what Pelican offers I only see various rubber options. Should I replace the hard preformed lines with flexible stuff or just leave them be?

Sorry to keep correcting you, but that looks more like the car's fuel rail fuel hose to me:

[Capecod 02/4S]

Feel free to correct me all you want! I'm new to this car and have never seen the engine out of one so I am learning as I go. What your saying makes perfect sense. I saw what appeared to be plain rubber lines without any clamps and quickly jumped to the conclusion they were vacuum. Very glad I asked and didn't mess with them!

This freaking car is killing me. I just spent at least two hours trying to get the threads to catch on that rear allen screw on the back of the AOS. I'm to the point where i think i'll buy a few 1/4 in drive flexible extensions and have someone else turn them with a screw drive handle while I wiggle the allen socket around trying to get it to grab and prey it doesn't cross thread.

[JFP in PA]

The reason the rubber fuel line has no clamps is that Porsche uses one time use barb ends on the metal section; to remove you have to cut it off, then shorten the hose and reattach by pushing onto the barb.

[JFP in PA]

And here is something that might help with your Allan bolt alignment problem:



the shaft flexes to allow your to move the fastener a bit to get it started.

[Capecod 02/4S]

Thanks, i alreadt tried one like that but i think if i attach several of them and route it so that someone can spin it from behind the engine while i try to guide it from underneath the car hopefully i'll be able to get it back in. Tried for hours alone with multiple arrangements and got no where.

[Capecod 02/4S]

Turns out the problem on the rear allen screw on the AOS was that a small wiring harness was partially lodged under the AOS preventing the screw from making contact with the threads. It was only after I removed the new unit could I see this with a mirror!

[Capecod 02/4S]

Originally Posted by JFP in PA

And here is something that might help with your Allan bolt alignment problem:



the shaft flexes to allow your to move the fastener a bit to get it started.

Turns out there is a small wiring harness which a portion of was under the rear flange of the AOS so the allen head bolt couldn't catch the threads. Only found it after I removed the new AOS trying to figure out why the bolt wouldnt go in.