82 911SC fuel line at rear of tunnel

[SCadaddle]

Fellows,

Working on getting my engine back together and trying to sort out the smaller issues. One of which is the fuel line at the rear coming out of the tunnel. In the pic you can see the line on the right appears to be crimped (?) as it makes the bend upwards as well as the connection appears to be chafing on the torsion bar housing. Anybody have comment or pics as to how this is supposed to be situated?

Thanks!

[SCadaddle]

I'll add that the white plastic shopping bag backing up a large wad of steel wool at the shifter housing is "mouse-proofing" while the car is awaiting the engine build.

[SCadaddle]

The upper end of the fuel line where it is metal also appears to have been chafing on the top of the transmission. The braided line is completely worn out and will be replaced.

[Nickshu]

Interesting. I'm about to tackle this exact project on my 82. What you have in your photo looks nothing like what I have seen elsewhere. Those connections should be threaded connections where the plastic (tunnel) line has a metal male end pressed into it connected to a female end on the hard line. The appearance that it's crimped and also bent upwards is curious. My lines come out straight before connecting to the hard line.

[TibetanT]

I am no expert, but I just finished replacing both my return line and pressure line fuel lines running inside the tunnel, front to back this past Summer.

Those lines look like they have been bent...due to engine R/R.

Both of my fuel lines coming out of the tunnel were straight back to the metal lines running into the engine compartment.

Hope this helps.

[SCadaddle]

Photos from others would be greatly appreciated!

[kodioneill]

I have a 82 with the engine out I'll post some photos tomorrow.

[BoxsterGT]

This may help.........






It appears your hardlines have been moved or bent by some previous activity, as the Polyamid lines should be straight out the back, not kinked as in your photo. Since these metal fuel lines are now NLA, I have been making replacement hoses from the tunnel up to the fuel accumulator or filter, depending on the model & year.

I am happy to help if you need replacements.

Please, NO PMs. Send me an email and I will reply with photos.

Len

[frankc]

I believe the early SCs (up to 79) used the same tunnel lines as my '77 (e.g.; 911.356.066.07), and a picture of how my lines looked coming out of the tunnel can be found in the thread below. I noticed the lines from the tunnel to the engine are hard lines in your picture, but they are rubber on my car. Question - is there a hole in the trailing arm mount bracket for attaching a clamp for the two fuel lines (see picture in link)? The clamp can be seen in BoxterGT's picture as well.

Should I replace theses brake and fuel lines?

[BoxsterGT]

FrankC- First time I read your excellent thread on the tunnel lines. Nice report & photos.

Some time in 1979-1980 Porsche superceded these Polyamid lines from the Male Cone fittings to the Male Flare fittings (bullet shape) shown in photo above. At this time they also went to the metal feed & return hardlines up along the firewall.

They used these flare fittings & hardlines thru to 1989 and the end of production of the 3.2 models. Now discontinued, the design of these fittings really made it difficult to fit replacements.

I started making up these lines after I heard Porsche discontinued the firewall hardlines. Going back to the Male cone fittings made it so easy to connect & replace the rubber hoses when needed.



With the 964 models Porsche went to formed Polyamid (Black plastic) lines which are very durable and are very cost effective (cheap) to make.

For most if not all of the older models, I think it was a case of lack of demand and cost to make in small quantities.

Len