source for fuel vent line

[Rick Cabell]

On the euro early 911's, and some U.S. cars there is a fuel tank overflow box located underneath the front cowl on the drivers side. It's about 4-5 inches square. At the bottom there are 2 nipples. One is 9mm and the other 15MM. The 15 mm goes directly to the tank. the 9mm is the actual vent to outside.
The 9mm hose is available from the dealer, the 15mm is NLA. I am looking for the correct 15mm ID hose that is fuel vapor compliant.
I found a old post that said SM had it in stock. I called them and it was 16mm instead of 15mm they have, which would probably work. Then I asked if it was fuel vapor compliant. Silence on the phone. Then the salesperson said they would be willing to check with others and give me a answer and call back within 15-20 minutes. No call. So I assume they don't have it, or don't know.
You can go to Home Depot and buy what appears to be the real deal, but not fuel compliant. Being the 15 mm off the tank, a full tank will splash a little gas up the hose. Over a short time, the hose will start to melt. I googled the manufacture of the German dealer 9mm hose and they do have a U.S distributor. But, their online catalog showed hose only up to 10mm, and 100 meter rolls.
If anyone has some sensible thoughts, please share your source.

[edmayo]

We get it from Mcmaster Carr, it is fuel vapor rated, and is yellow in color. I know, not quite the correct amber, but at least not clear.

[Rick Cabell]

Thanks for the reply Ed. Yea, I saw that but was looking for more original if possible, which I don't think is going to happen, so I might go with that. Also, I think you have to go with inch size,as the metric only went to 10 mm.
And, if you read product description it says not compatible with ethanol based fuels. But, in this application where gas is rarely going in the tube, I think it will work fine.

[NickP]

Rick

I used the McMaster yellow vapor resistant tubing as Ed suggests. Better than the clear IMO. Lame iPhone photo:

[tom1394racing]

Rick

I purchased the tubing for my ‘70E project from McMaster Carr.

5187K75 Fuel and Lubricant Yellow PVC Tubing 1/2" ID, 5/8" OD, 1/16" Wall Thickness

5187K68 Fuel and Lubricant Yellow PVC Tubing 5/8" ID, 7/8" OD, 1/8" Wall Thickness

[Rick Cabell]

Nick's tank seems to have a 9mm nipple so he was able to use the hose with 1/16 wall. Tom , the 5/8 stuff has a wall thickness of 1/8. Looks very bulky and non original. Yes, it will work fine. My application is a vintage race car with no trunk carpet so when the hood opens the heavy hose sticks out like a sore thumb.
So Ed, knowing the correct hose is NLA, would you "ding" someone at a event you were judging ?

[neilk]

Rick

I purchased the tubing for my ‘70E project from McMaster Carr.

5187K75 Fuel and Lubricant Yellow PVC Tubing 1/2" ID, 5/8" OD, 1/16" Wall Thickness

5187K68 Fuel and Lubricant Yellow PVC Tubing 5/8" ID, 7/8" OD, 1/8" Wall Thickness

Rehashing this old conversation, the above SKUs have a disclaimed not to use with ethanol based fuels.

LINK

PVC Tubing for Fuels and Lubricants

Very Flexible
Compatible Tube Fittings: Barbed
Soft (Durometer 65A)
Temperature Range: -10° to 120° F
This economical tubing can be used intermittently with petroleum-based products without becoming hard or brittle. It is not for use with ethanol-based gasoline. Tubing is clear, so you can easily monitor flow.

Should we getting the Tygon tubing that doesn't have an ethanol disclaimer?

Formulation: F-4040-A
Very Flexible
Compatible Tube Fittings: Barbed
Soft (Durometer 55A)
Temperature Range: -30° to 160° F
Not only will this tubing stay flexible when used with gasoline and other petroleum-based products, it also withstands lower temperatures than other fuel and lubricant tubing. Tubing is semi-clear, so it gives you a limited view of what’s flowing through your line.
D OD Wall Thick.
1/2" 5/8" 1/16" 5552K28 3.21
5/8" 7/8" 1/8" 5552K31 6.60

I need to replace the hose that connects to my fuel tank so not sure which one to get.

Thanks,
Neil

[smedley]

The original stuff was generic metric clear polyethylene tubing...which is why over 10,20, 30 years it discolored and turned to stone!

I had a friend in the Netherlands go into a local hardware store there and purchase 4-5 meters of each size ( other places in the cars like windshield washer ) they sold and ship it to me. Even though it does not have a politically correct "vapor rating" it is as original and will probably last at least 4 or 5 years before needing replacement. Any hardware store in Europe sells all the needed sizes...make a new friend over there!

[mathieulecomte]

I used Mc Master Carr on my 912 fuel venting

[Brad Davis]

I stock the original stuff Mark mentioned. It is German and made by Cohline. Different sizes I have on hand are ID 6mm 7mm 9mm 12mm 14mm. For the SWB tank vent I use the 7mm. Let me know if I can help you with any of these sizes?

Thanks,

Brad