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Early Fuel Cock for '54 Speedster
http://forum.porsche356registry.org/viewtopic.php?f=21&t=46012
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Author:  Rich Peters [ Sat May 05, 2018 5:01 pm ]
Post subject:  Early Fuel Cock for '54 Speedster

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'54 speedster fuel cock-1.jpg
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I'm looking for a fuel cock for our Speedster #200. It has the small tank outlet and the larger fuel line to the motor.
It is a VW part and this is the original one on the car. It has an embossed logo with the letters kaRco in it.
I've attached a photo, but this is my first time, so not sure it'll show up.

The one on the car now leaks, and yes, I know I can get some of the rebuild parts from Wolfsburg West.
However, I'd like to rebuild another and exchange the leaky one on the car.

Anyone have an old original one they'd sell?

Thanks,
Rich

Author:  Ned Gorski [ Wed May 16, 2018 8:32 am ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

The early ones are few and far between. the connector nut is a different size than the later ones. They don't leak very often as long as they are constantly cycled open and closed . its a simple procedure to rebuild my advice buy the correct pre a rebuild kit. remove the leaking fuel cock take it apart and clean, replace worn parts from rebuild kit and then reinstall its takes less than an hour . possibly two if its your first time and you take your time. there is really nothing to it. ... fyi the clamp is missing from your fuel hose ...
Regards Ned
55 Cab

Author:  Tom Tate [ Wed May 16, 2018 9:57 am ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

Rich,
You don't have an email address in your profile so I'll just post here that I have a few of those early versions if you want to practice rebuilding one.

Author:  Rich Peters [ Wed May 16, 2018 8:02 pm ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

I thought my email address was included in my profile.
Well, it is now.
Thanks Ned and Tom.

Rich

Author:  JohnLiles [ Fri May 18, 2018 3:28 am ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

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I had to remove the fuel cock from a 55 Continental , here are the pictures of it . As my car is an outlaw I do not need to keep the original parts together , so if you get stuck for a replacement let me know....it is in UK however and postage may be an issue !!

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Author:  Jan Kolm [ Sat May 19, 2018 10:01 am ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

Both are VW parts and both were used on pre-1956 VWs and Porsches. I'm not sure if the ones with 6mm outlets are correct for early 356s or pre-Oct '52 VWs (James and others can answer this)

However, the Karco unit is easier to rebuild, as they were produced into the 1970s and rebuild kits are available from multiple sources. NOS ones show up occasionally at swap meets, usually for crazy money.

The short-bowl units have corrosion issues, so this one is a true survivor. I don't know if the Karco parts are interchangeable, though. I don't believe these were produced beyond the 1950s. This particular fuel cock is unusual, in that it has a wing nut, not a knurled nut.

As Ned mentioned, these are not interchangeable with the larger 356A-B-C assemblies.

Another option is to use the 1956 and later VW unit without the bowl. These were used at least through 1967 on standard VWs. The valve only rotates 90-degrees though and "off" is at the 45 degree position.

Author:  Brad Ripley [ Sat May 19, 2018 11:33 pm ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

Rich, What is wrong with the petcock sold by Stoddard NLA http://www.stoddard.com/35656022.html

BTW, the name on those petcocks is Karcoma as in http://www.karcoma.com/en/company/aboutus/index.php

Author:  Alan Hall [ Sun May 20, 2018 10:10 am ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

Brad, the petcock that Stoddard sells has a 6mm outlet while the original 356 has an 8mm outlet. See: viewtopic.php?f=21&t=42328&hilit=6mm+outlet

Author:  Brad Ripley [ Sun May 20, 2018 9:57 pm ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

I did not know the wrong specification was being sold. I will look into a correction.

Author:  Rich Peters [ Mon May 21, 2018 4:02 pm ]
Post subject:  Re: Early Fuel Cock for '54 Speedster

Thanks Brad. I did purchase the petcock from Stoddard and ended up with the wrong one.
It's ok, I'll use it as a spare for another car in the future.

The reason I'm looking for an extra, when I removed the small wire spring that holds the part in place, it went flying!!
I can't find it anywhere! I cut the cork gasket to fit, reassembled the original one and use the thicker one supplied with the new Stoddard one.
Needed to cut it down a little and it was tough to install. Different diameter of wire between the two.

Oh well, long story but that's why I need a spare so I can rebuild or restore another one.

Allan, thanks for the thread, I didn't see it before. It will help in the rebuild.

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