RichS 1986928

After reading horror stories about fuel leaks I'm ready to be proactive.
I've already got a fire extinguisher.

What Fuel lines are prone to failure?

Does anyone know where the best price is without sacrificing quality?

I'm attaching an image from another post to help identify where these line are.
Hope you don't mind, MGW-Fla. I have arrows to the lines I suspect.

Thanks in advance,
Rich

SeanR

Both are known for failure. Change them.

They are also in the '87 MY onward. The front one will rub on the oil fill neck and eventually work it's way out. There are a few ways to lessen the chances of that happening.

The rear one is one that most don't think about and is responsible for a lot of engine fires.

Shane

The yellow arrow shows where mine broke.

Two reasons why I think this happened:

1. It was 20 years old.
2. I had just mounted Andy Keels supercharger kit and it came with 87+ fuel rails which required me to move and flex that line forward to get it on the front fuel dampner.

The line split and happily sprayed fuel down the cam cover and onto the exhaust until my pride and joy was thoroughly toasted.




I replaced them all, but since I sorta started all this fuel line crap by burning my 928, they were All still available, so Helmut has brand new lines all around!!

sharkmeister85

That rear one is NLA from what I understand.
Glenn

byrdman454

You can check the archives and see that Roger has shown replacing the fuel lines is easy by using fuel injection hose and fuel injection hose clamps. When I went to do my '88 S4, I decided I wanted to have them crimped permanently like a hydraulic line, but the horse shoe shaped one became a problem. If you bent the line that much, it was pinching it off. This was not going to work. Lucky for me, the shop I went to can do anything hose or tube related. I ended up doing all my engine bay fuel lines (qty 4) in braided line. The inner plastic hose beneath the braid kept the hose shape. I also redid the lines on my '84 Euro but did them in rubber and not braid. If anyone is interested in the place, let me know. It is in a very, very small town and does alot of custom lines for hot rods. In my opinion, very reasonable prices. I think I got all 4 done in braid for just under $200.

RichS 1986928

Mike,
How is the metal braid holding up? Is it stainless?
I would definitely be interested in purchasing those 4 lines from the shop. Do they have
a template for the 4 1986 lines needed?

Podguy

I went to the parts store, bought some fuel injection hose of the correct size and some fuel injection hose clamps. US rubber is far superior to the German stuff. I used to replace the injection hose on the fire bomb 914s and their older cousins the VW square back (type III). Never had a problem with the FI hose.

The rear hose presents some special problems, but I was able to add a little extra hose to keep it form kinking. The alternative is to provide a plastic sleeve to keep its shape. The braided hoses look nice, but I did mine for a lot less than $200. Fuel lines are probably a maintenance must for the older cars.

byrdman454

I have had the braided stuff on my car for a couple months now. It has been holding up very well. I believe all braided lines are stainless.

This shop can make anything from braided brake lines, rebuild rubber A/C lines for 134A, rebuild trans lines, rebuild pwr steering lines, whatever. My euro is getting new A/C lines, and my S4 is getting it's transmission cooler lines rebuilt soon. This place does not have templates of anything. He will need you old lines, because the metal nozzle parts will have to be reused. He also needs them to be sure they are oriented to each other the same.

Here is the place's info. I am not affiliated with them at all. I found them through a guy I know that had lines made for his hot rod.

www.genestubesnhoses.com

Doing it yourself with FI lines and clamps is alot cheaper. I just wanted something a little more permanent and liked the look. I also wanted the protection from rubbing a hole in the hose like the front hose that runs under the oil fill. $200 is not that bad considering the one line from Porsche that comes from the passenger side to the front of the engine is over $150. Most of these are NLA anyway. Just thought I would share one more alternative with everyone.

ROG100

The fuel hoses on our cars are "PUSH FIT" only.
Replace with EFI hose and EFI clamps and you have a replacement that is 20 times better than the original Porsche part. Less than $8 per hose.
Do a search

RichS 1986928

Has anyone replaced the Rubber fuel lines with braided and done the job themselves?

I'm not sure how much the crimping tool costs but this may be the way to go.

Recommended supplier for braided hose, clamps and tools?

ROG100

A few thoughts on braided hoses.
1) they look good.
2) the braid is there as abrasive protection but also added strength to contain pressure pulses in Hydraulic lines - Ours are not pulsed in that way.
3) the braid can cut into the wall of the hose over time and reduce the strength of the hose.
4) because there is a braid manufactures reduce the performance characteristics of the hose.
5) the braid acts as an axial thrust restraint.

Personally the bad outweighs the good!

The EFI hose is designed just for that reason and not for hydraulics.
Go with the hose designed specifically for the job - you cant see then anyway so any cosmetics go out the window.

EFI hoses are SAER9 - designed specifically for EFI
Inner tube is Fluroelastomer Veneer
Reinforcement is Multi-Fiber Braids
Cover is ECO(Epichlorohydrin Copolymer)
Temp Range is -30F to +275F

ROG100

RichS
With respect read the info you are being given.

Namvet

Thanks for the photos and arrow locaters. Since i have an 84S , over 20 years old, I amgoing to look into replacement of fuel lines. I like the braided Aeroquip stuff. Never a problem with their products.

TY

ROG100

I guess I am wasting my time here!
Off to play with 928s

Shane

Not all is lost Roger, it has given me some good info! Thanks!!