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> What is the best way to connect the 9mm to 7mm gas lines?, Now with additional dumb questions at the end...
FourBlades
post Jun 29 2009, 06:00 PM
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I have seen different things discussed, like welding up some
pieces custom, using a plumber's nightmare of 2 different
barb fittings and a connector, the mythical fuel filter with 9mm
inlet and 7mm outlet. What is the best way to deal with this?

Thanks,

John
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dr914@autoatlanta.com
post Jun 29 2009, 06:03 PM
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QUOTE(FourBlades @ Jun 29 2009, 05:00 PM) *

I have seen different things discussed, like welding up some
pieces custom, using a plumber's nightmare of 2 different
barb fittings and a connector, the mythical fuel filter with 9mm
inlet and 7mm outlet. What is the best way to deal with this?

Thanks,

John


\
the seven/nine step hose
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tradisrad
post Jun 29 2009, 06:08 PM
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yep- a special hose
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Cap'n Krusty
post Jun 29 2009, 06:11 PM
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While the answer to life, the universe, and all that stuff is "42", the answer to your question is "914 356 525 00", and it's available from Porsche, as well as GPR at (800) 321-5432. The part you need is a 6" +/- piece of hose with one end larger than the other. This is a SAFE and easy way to get from the plastic line to the filter, and the new hose will last for years.

The Cap'n
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FourBlades
post Jun 29 2009, 06:16 PM
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OK, so what is the part number, and is it still available or is
there a repro?

(Thanks Captain, we must have been typing at the same time)

Thanks,

John
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championgt1
post Jun 29 2009, 11:47 PM
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I just bought one of these. it worked great. The cost is very inexpensive compared to the price of the factory style rubber hose.

http://www.tangerineracing.com/stainlessFuelLines.htm
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dangrouche
post Jun 30 2009, 06:40 PM
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i added one of these tubing adaptors and it makes you never have to worry about a step down hose that is expensive and hard to find. thanks Chris at CFR!
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Cap'n Krusty
post Jun 30 2009, 07:06 PM
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QUOTE(dangrouche @ Jun 30 2009, 05:40 PM) *

i added one of these tubing adaptors and it makes you never have to worry about a step down hose that is expensive and hard to find. thanks Chris at CFR!


So, how much was the tube? I reckon the only place to get that thing is from CFR, while the $20-25 hose is available at any Porsche dealer in the world, although they'll have to order it. And you won't need 2 pieces of hose and 4 hose clamps, either.

The Cap'n
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dangrouche
post Jul 1 2009, 12:57 AM
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QUOTE(Cap'n Krusty @ Jun 30 2009, 06:06 PM) *

QUOTE(dangrouche @ Jun 30 2009, 05:40 PM) *

i added one of these tubing adaptors and it makes you never have to worry about a step down hose that is expensive and hard to find. thanks Chris at CFR!


So, how much was the tube? I reckon the only place to get that thing is from CFR, while the $20-25 hose is available at any Porsche dealer in the world, although they'll have to order it. And you won't need 2 pieces of hose and 4 hose clamps, either.

The Cap'n

$10.95 delivered price, yes, have to use two bits of hose and four clamps to join it all together.
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FourBlades
post Jul 2 2009, 07:16 PM
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OK, so I am running carbs and want to locate my fuel pump and filter up front.

I figure I need one steppen hosen from the tank to the filter and another steppen
hosen from the pump to the fat tunnel line. Then, sigh, I need another steppen
hosen from the fat tunnel line to the short fuel line in the engine bay.

How long are the steppen hosens? Are they long enough to lift out my tank
so I can change the fuel filter? I also kind of like the idea of mounting the
filter and pump next to the spare tire so that they are easy to service. Are
they long enough for that?

Finally, is it safe to use brass barbed fittings like this with fuel lines?

Attached Image

I have a buncha 5/16 and 3/8 barbed fittings I could use to make adapters.

This would let me make the hoses the length I want. I would solder the
fittings to prevent leaks after reading all the posts about fuel and teflon
tape, etc. not mixing.

Sorry for all the dumb questions, just trying to figure this out.

Thanks,

John
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FourBlades
post Jul 3 2009, 02:06 PM
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roadster fan
post Jul 3 2009, 02:30 PM
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QUOTE(FourBlades @ Jul 2 2009, 06:16 PM) *


Attached Image

I have a buncha 5/16 and 3/8 barbed fittings I could use to make adapters.

This would let me make the hoses the length I want. I would solder the
fittings to prevent leaks after reading all the posts about fuel and teflon
tape, etc. not mixing.



I have a similiar setup on my early car with no problems in about 1.5 years. For $10.95 delivered I would go with CFR's piece but the brass fittings will work. Thanks Chris for all the great parts (IMG:style_emoticons/default/aktion035.gif)

Jim
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ChrisFoley
post Jul 3 2009, 03:22 PM
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QUOTE(FourBlades @ Jul 2 2009, 08:16 PM) *

I figure I need one steppen hosen from the tank to the filter and another steppen
hosen from the pump to the fat tunnel line. Then, sigh, I need another steppen
hosen from the fat tunnel line to the short fuel line in the engine bay.

How long are the steppen hosens? Are they long enough to lift out my tank
so I can change the fuel filter? I also kind of like the idea of mounting the
filter and pump next to the spare tire so that they are easy to service. Are
they long enough for that?

1) Get a filter that has 3/8" ends.
2) Change the fittings on the pump to 3/8".
3) In the engine comp. put a 3/8" fitting on the pressure regulator inlet and a 5/16" fitting on the outlet.
If you can do all 3 you won't need any step hoses or adapters.
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neil30076
post Jul 3 2009, 06:47 PM
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QUOTE(roadster fan @ Jul 3 2009, 01:30 PM) *

QUOTE(FourBlades @ Jul 2 2009, 06:16 PM) *


Attached Image

I have a buncha 5/16 and 3/8 barbed fittings I could use to make adapters.

This would let me make the hoses the length I want. I would solder the
fittings to prevent leaks after reading all the posts about fuel and teflon
tape, etc. not mixing.



I have a similiar setup on my early car with no problems in about 1.5 years. For $10.95 delivered I would go with CFR's piece but the brass fittings will work. Thanks Chris for all the great parts (IMG:style_emoticons/default/aktion035.gif)

Jim

Teflon tape NO, RectorSeal TPlus2 Teflon pipe seal from Home Depot is impervious to gasoline, and works great on a brass to brass connection.
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davesprinkle
post Jul 3 2009, 07:20 PM
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Pipe threads have no place in a fuel system.

The following emoticon added by my best girl:
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Porsche Rescue
post Jul 3 2009, 07:28 PM
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I also recently faced this issue. After being shamed by the Cap'n and others I decided to do it right. The factory tapered hose is about $25, which seems absurd, but then I remembered all the $ thrown at other parts of the car and it didn's seem so bad. I am sure the hose I replaced, which was still not leaking, was 39 years old. I figure I'll get my money's worth out of the new one and will know I did it right.
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FourBlades
post Jul 3 2009, 07:48 PM
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Thanks for all the info.

How long is the tapered hose?

If it is long enough to support my front fuel pump mount then it would
be a no brainer. If I have to splice in more tubing then it does not seem
as important.

John
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Porsche Rescue
post Jul 3 2009, 08:13 PM
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Not sure I understand what you mean by "front fuel pump mount" but factory tapered hose from plastic tunnel line to filter is 4 3/4" long.
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