Gas Filters For SC's

[Gunter]

HI: Even though the SC-years have the same size 3 Liter engine, there are different gas filters listed for 1978-83. And there is a huge price difference between them. Example: For my 1980 SC, Pelican lists US$32.70 but for 1981-83 it's only S20.80. It's the same size engine, CIS, etc.
My connections to the filter are flare nuts on each end which requires male/male nipples on each end of the filter. The most reasonably priced is the BOSCH # 0 450 905 021 here in Canada, but, it has female treads which would require a changeover of the male nipples from an old filter. How do any of you deal with this? What is your solution? For a price difference of $12.00 I would like to modify the set-up. I don't see any reason why there should be different filters when the SC-engines are all the same size.

[pbs911]

Been there done that. Just get the part number on your and match it up. Apoparently Porsche used whatever fuel ilter was on the shelf so you can't rely on a catalog. It is hardly worth the trouble of all the added conversion pieces for $12.00 IMHO.

[Gunter]

The $12.00 difference is not the issue. The filters were changed by Porsche in 1980 and I want to know how other people deal with this. The holding bracket has a certain diameter to clamp the filter in. The filter that's in there now is certainly not a BOSCH filter; it has no number and looks like some after-market thingy. So, what BOSCH number does anyone have on their '80 - 83 SC? Or, what are you using? Please..........

[sammyg2]

I ran into the same problem. I did the conversion to the more common and cheaper filter, not for the $12 difference in price, but only because I was having a heck of a time locating the correct filter.
A local independant Porsche shop had a few extra fittings laying around and adapted the more common filter so it would fit my car. I think the whole thing cost me about $30.

If I could have found the correct filter at the time I would have gladly paid the extra money for it, I mean how ofter do you have to change the fuel filter, once every three years or so max?

I still have the original filter in my garage, if I remember in the morning when I get home I'll get the number and post it.

My original filter had 13mm threaded holes on both ends, the only filters I could find had 13mm on one end and 12mm on the other.

[makaio]

They didn't only change it in 1980. They also changed it half way through 1978 production run. That's why PBS and I have different model filters, but same year car.

[47silver]

i think the fuel filter should be changed with the oil. cheap insurance

[sammyg2]

Changing a 911 fuel filter every three thousand miles is a total and complete waste of money IMO unless you live in an area where the gasoline quality is really, really bad. If it got to that point I would think about filtering the fuel before I put it in my car.

[47silver]

just concerned with the old gas tank not the gas quality as there are many horror stories of rust etc polluting the fuel distributor and such i guess that i have been jaded by reading them so to be safe and on some maintenance routine i thought it best to do when i did the oil. would every 6k be too much?

[sammyg2]

if the condition of the inside of the fuel tank is in question then that throws all other considerations out the window and you will have to do whatever it takes. Even changing filters more often than normal.

Reminds me of a story (oh boy, here he goes again):
in high school My main transportation was a VW bug. I decided to try this miracle fuel system cleaner even though the car was running fine. I was replacing fuel filters every day for weeks afterwards, seems that miracle cleaner cleaned all the paint, rust, crap, etc. off the inside of the tank and sent it through the pump. After that I swore I would never ever use a fuel system cleaner again, and I haven't