73.5 Fuel Filter

[BBShriver]

I'm looking at the fuel filter for 73.5 CIS 2.4 911T, and Pelican lists an "old" style "updated" style, and an "update kit", though the "old style" and "update kit" are NLA. So first question, is how do I tell whether I have the old or new style, and if I have the old style what do I do since both the filter and update are NLA?

[Fidalgo911S]

To answer your first question the '73.5 and '74 fuel filters have the threads on the top and a smooth input stem on the bottom.

This is a tough situation and not easily resolved. I think the best course of action is to call an auto dismantler and buy a used update kit. i.e. buy a fuel fliter system off of a 911SC with a common fuel filter. I looked into having a custom set-up made by someone who has the tools and expertise. But…while I was pursuing that, three old-style fuel filters came up for sale on e-bay and it seems everyone missed them as I was the only bidder and bought them for a song.

So when those run out I'll have a conversion kit made for the car or buy a SC set-up.

My .02

[B Goode]

There is another option if you are much of a do-it-yourselfer.

I have a 73.5 T as well, and I fabricated a custom bracket to hold a filter that I bought from Pelican (911-110-176-02-M14).

Unfortunately, I don't have any dimensions, but hopefully these photos will help:





I am a fan of using wrinkle finish paint, which unfortunately does not lend itself to seeing much definition in these photos. It is important to put breaks (bends) in the sheet metal bracket to add some rigidity.

I bought the outlet fitting (black in the photos), and the extra fuel hose that I needed from Earl's (auto plumbing supply). If you choose to do this, MAKE SURE THAT YOU USE HIGH PRESSURE FUEL HOSE, rated for fuel injection systems.

[B Goode]

Here is a photo of my setup in the engine compartment:



A keen eye will be able to tell that I don't have the upper fuel hose tightened down yet in the photo. That was resolved before I turned on the fuel pump.

It has been my intention to post all of this whenever I get my engine rebuild project finished, but I hate to see anyone suffer needlessly.

Disclaimer - If you don't feel confident in doing this, then don't do it. If you do, triple check all of your fittings and keep an eye on the filter setup after you get the car running. Always have a fire extinguisher around when you are working on this. Remember, IT IS FUEL - DON"T BE STUPID.

[Richard Burns]

Try using the same filter as B Goode. A simple fit is to use a hose clamp to hold it to the original bracket which is above left on his photo. The clamp will fit around the filter and the bracket. Your local Bosch dealer will be able to supply the filter.

[Jim Sims]

Parts in the upgrade kit are individually available from Porsche or at least last November they were. See the below thread.

need pics of fuel filter installation

[Sunroof]

I have a 1973.5T as well and the new filter can nest against the existing bracket with a clamp. No retrofitting is required at that location. When I remove my filter I usually disconnect one fitting from the accumulator, which makes it easier for filter replacment.

Bob

[HarryD]

I faced the same problem a few years ago. My solution is here: http://members.rennlist.com/harryd/1973fuelfilter.htm