Fuel Reg Short Hose Solution

[gregwils]

I'm wrapping up my rebuild and am replacing the fuel lines. There are a variety of solutions. I sourced metric fittings from BAT for most of the hoses, but still had to deal with the short hose from the pressure regulator to the return fixture. The Porsche part is $30, plus a $100 Porsche tax ($130 total). A regular rubber fuel hose kinks or is stressed when installed, so need to do something innovative.

I was kicking the issue around with the local parts store guy (independently owned), and he suggested some copper tubing inside the fuel line. So that is what I did. It's basically a $6 solution that took about an hour to get it correct.

I don't see an issue with the tube, because the ID is about the same as the ID on the regulator and the return hose fixture so this is not a restriction. The tube reduces the stress or kinks on a specific location of the hose, so I think this will work fine.

Comments welcomed.

ID of copper (right) and return hose fixture.


Bending the copper to the correct radius and length (I shortened it a little after this photo)


Rubber hose with copper tube inserted preventing kinking.

[HunterVonWurst]

Nice work. Love these "shade-tree" solutions! The only downside I can see from this workaround is that you're giving up the flexibility that may be required between the two parts joined by the hose. (Not familiar with this hose, so just guessing here).

[BoxsterGT]

Nice work Greg.

After reading about your success, I tried doing this myself.

I make up & sell the other two replacement hoses for the 3.2, and this one was the only part I could not do.

At over $100 ea from Porsche there really was a need for a lower cost replacement.

After a few hours trying to duplicate what you have done, I realized I could not sell these at any kind of reasonable price. It just took too long to make one, let alone many.

A bit of research online on vulcanizing rubber and many attempts & failures with my wife's toaster oven, I am now able to make this hose.........



My price is $40 plus shipping.

I am also able to custom make Metric hoses & lines for a Porsche in both fuel & oil in almost any configuration or length needed.

Len at Autosportengineering dot com