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Author Topic: Clear polyurethane fuel line on EBAY 1/4 and 5/16 ID  (Read 3355 times)

September 29, 2020, 01:22:06 pm

thomas m

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Clear polyurethane fuel line on EBAY 1/4 and 5/16 ID
« on: September 29, 2020, 01:22:06 pm »
Currently on Ebay as of September 29, 2020.......
Polyurethane fuel line, 5 feet lengths, fair price

Ebay Item Numbers:  322726203918 for the 1/4 inch ID and   323261344212 for the 5/16 inch ID


Thomas, Original owner since new:
1991 MK2 Jetta Non-turbo 1.6 diesel, Engine Code ME, 5 speed 020 AWY 04120 transmission, Hydraulic Lifters,
320,000 miles
Location: Vancouver, WA
LOOKING FOR REBUILD OPTIONS IN PORTLAND, OR OR ON THE WEST COAST

Reply #1September 29, 2020, 11:39:00 pm

fatmobile

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Re: Clear polyurethane fuel line on EBAY 1/4 and 5/16 ID
« Reply #1 on: September 29, 2020, 11:39:00 pm »
 I had problems with some of the polyurethane tubing after a few years.
 Especially if it was sitting.
 It would crackle, like safety glass.
 I've been testing/using tygothane lately.
Tornado red, '91 Golf 4 door,
with a re-ringed, '84 quantum, turbo diesel, MD block

Reply #2October 02, 2020, 03:27:40 pm

thomas m

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Re: Clear polyurethane fuel line on EBAY 1/4 and 5/16 ID
« Reply #2 on: October 02, 2020, 03:27:40 pm »
I had problems with some of the polyurethane tubing after a few years.
 Especially if it was sitting.
 It would crackle, like safety glass.
 I've been testing/using tygothane lately.

Thanks for the tip. I will keep an eye on it and maybe try some Tygothane.
As far as I can tell from cruising the sites, Tygothane is a polyurethane plastic. There are more than one kind with different characteristics. It is a trade name mix of Tygon and polyurethane, hence "Tygothane".
Here is an excerpt from one of those site:

"TYGOTHANE® Precision Polyurethane Tubing
Tygothane® is TYGONs® prescision polyurethane tubing made from a tough ester-based polyurethane. It is ideal for applications that require tight dimensional tolerances. TYGOTHANE® C-210-A is designed for applications where tight tolerances must be held. It has excellent abrasion resistance as well as excellent resistant to oils, greases, and fuels. The temperature range of C-210-A allows the material to stay flexible in sub-zero environments. It also has high tear resistance and is FDA compliant making it viable for a wide variety of applications......."
Thomas, Original owner since new:
1991 MK2 Jetta Non-turbo 1.6 diesel, Engine Code ME, 5 speed 020 AWY 04120 transmission, Hydraulic Lifters,
320,000 miles
Location: Vancouver, WA
LOOKING FOR REBUILD OPTIONS IN PORTLAND, OR OR ON THE WEST COAST

Reply #3October 02, 2020, 07:01:34 pm

libbydiesel

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Re: Clear polyurethane fuel line on EBAY 1/4 and 5/16 ID
« Reply #3 on: October 02, 2020, 07:01:34 pm »
I've been using clear Versilon (previously called tygothane) tubing for supply, return and the jumpers between injectors on various vehicles for more than a decade. Great tubing. Resilient, flexible, ages really well, compatible with diesel or biodiesel. 1/8" ID 1/4" OD for the jumpers between injectors (https://www.mcmaster.com/5549K44/), 1/4" ID 1/2" OD for the line from filter to pump (https://www.mcmaster.com/5549K34/), and 5/16" ID 7/16" OD for the return line (https://www.mcmaster.com/5549K35/). The clear return line will let you immediately know if you are getting air into the system. Just look immediately after a cold start. The jumpers between injectors never purge the air out, but on shutdown you can immediately see if any are leaking in air and where (even if there isn't any diesel ever leaking out) as the bubbles will move toward the large return line. 

Reply #4November 24, 2020, 10:17:23 pm

fatmobile

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Re: Clear polyurethane fuel line on EBAY 1/4 and 5/16 ID
« Reply #4 on: November 24, 2020, 10:17:23 pm »
 I've been trying versilon/tygothane since Andrew suggested it.
 For the 1/4" ID stuff I got it with 3/8" OD instead and it works great.
 I'm familiar with that OD so I stayed with it.
 
Now I have to buy a 5/16" roll for the TDI stuff.
Tornado red, '91 Golf 4 door,
with a re-ringed, '84 quantum, turbo diesel, MD block

 

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