I have a couple of hundred feet of this clear nylon lines and a few old lines, took the ends and rebuilt them.



made 5 lines total, I'll have spares and they will go in the for sale section.


Installed one line so far. This is a video of what it looks like compared to an old line. Looking good- no leaks!

CLICK TO PLAY!

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

All done!

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Very nice are those oetiker clamps they add a nice touch.

Aren't those moderate pressure lines? I'm wondering what this'll look like long term, but I'm very interested!

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- 1979 W123 240D 4-speed, 390k miles

Do people realize, you can still buy these brand new?

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my understanding is that the new ones were $$$$ ?

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1981 NA 300D 310k miles

Not to bad, seeing that it is something that would only need to be replaced every 30 years....or mainly for looks....on one sit...one is 18.50, 16.00 and 40.00....probably could be found cheaper...

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These nylon lines will handle over 400 psi pressure and 29" Hg vacuum. I've used them for at least 6 years on vegi cars where both veg and diesel run through them and they are still as clear as the day I installed them. I wonder how long it takes the OE Tecalan lines to turn yellow/ brown?

The injector return line on the filter tee was clear when installed a year and a half ago and as you can see has already turned brown. It is Tygon (Polyurethane) made by St Gobain from McMaster. It has seen only diesel. No plans to run my 85 300D on veg.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

I redid these lines with polyurethane and after about five year start to crack at the nipple, and I get little pulsating fountains of fuel spraying under hood. Quick roadside fix was to cut line at the nipple, remove old section from nipple, jamb the line back on nipple, tighten clamp and go. Of course, lost prime to the IP in process so a lot of cranking to get the air out.

Really curious if nylon works better over time. What are the specs / dimensions of the tubing you bought and from where (p/n)?

Nylon is not very elastic so I'm guessing those clamps are very necessary to keep tight fit to nipple. More on source of those too please. Special tool to apply them?

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Cheers!
Scott McPhee

1987 300D

When I replaced Mine I just used 1/4" Rubber Fuel Hose.
Being able to see through the line was not a big issue for Me.

To remove the Old hard Plactic Lines wrap Masking Tape around the jaws of a Vice Grips and grip the Banjo Bolt. Use a Butane Lighter or Candle to heat the plastic that is over the Banjo Nipples and at the same time pulling on then Line.

The Idea is to get it soft enough that the Line pulles cleanly off of the Nipple.

If it gets too hot the Line pulls away leaving the Platic on the Nipple and it is more difficult to get off.

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84 300D, 82 Volvo 244Gl Diesel

In my experience it takes 3-4 years before the OEM lines get to that funky semi-opaque brown look.

Looks like a nice set of line making fittings you have there. Lucky guy!

Rgds,
Chris W.
'95 E300D 420K with with brownish fuel lines

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Objects in closer are mirror than they appear.

I had similar experience with the polyurethane lines used as injector return lines where the ends get hard and crack and leak, making a mess. I am just using up what I have and will go back to the OE braided lines which are much tougher.

The nylon lines are not suitable for injector returns since they are very stiff and requires heat to soften during install and also during removal.

I bought a lifetime supply (200 ft of each 1/2", 3/8, 5/16, 1/4") 7 years ago and can't remember the name of the company who makes them. I probably have the receipts somewhere but finding it may be a problem. If you want to purchase a small qty from me, I maybe able to accommodate.

For anyone interested, I have a set of 3 lines in the for sales secion:

http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/355416-injection-pump-clear-nylon-banjo-line-set-3-a.html#post3334235

This is the only set I have since I have no more used lines to to scavenge the banjo ends to rebuild from so hurry if you'd like a set.

If you send me your old lines, I can rebuild and pressure test them and send them back to you.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Re materials, most newish gasoline cars (~10 yrs now) use nylon fuel hose, so it should survive a long time in diesel. In gas cars, it can develop cracks at the fittings after 10 yrs or so. Autozone and others sell nylon hose (black) and associated nylon fittings, but isn't cheap. Don't use clear polyethylene hose. When I have used it to siphon gas, it later gets hard and brittle.

Cars don't use clamps, even for 60 psi. You heat the hose in boiling water, slide it over the barbed fitting and it stays on once cool (hopefully). Using a clamp is a good idea though, even at the <15 psi of our engines and the safer diesel.

nice work!

They look great.

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1986 560 SEL
1960 Ranchero
1970 Cougar XR7
2002 Crown Vic Sport
1992 F150