Plastic Tunnel Fuel Lines, I want to replace the 2 tunnel fuel lines in my 76 - 914 Options

[matchpoint]

I have my 76 - 914 engine and fuel tank out of my car during my frame off restoration. I want to replace the 2 plastic/nylon fuel lines in the tunnel with an OE product and not use the stainless or mild steal fuel line. I want to go back original and after 40 years of service I want to replace the plastic lines. Looks like everyone says go stainless but I want to go with the OE plastic.

Does anyone have a part number of a replacement plastic/nylon tubing of the same size as the OE plastic tubing. I think it is 7MM OD size. Auto Atlanta told me to just blow out the OE plastic lines and don't waste your time replacing. Looks like an easy replacement while the car is apart and all I need to know is a P/N of a plastic/nylon fuel tubing I can get @ NAPA.

Thanks

[JeffBowlsby]

We should not advocate for either the nylon or SS fuel lines, both can serve their function well and one is not necessarily better than the other. The lines are located in protected areas of the chassis so impact damage is not likely.

Nylon lines don't corrode, are seamless, and may insulate the fuel from heat soak better than metallic lines. OE nylon should be replaced if obviously embrittled or cracked - they are maintenance items. But it is not correct to generalize that all OE nylon lines are bad or unconditionally safety hazards, even at 40 yrs old. I would not go so far as to universally rip these out without careful examination of your specific lines. The original lines in my car, and many cars I see, are perfectly serviceable.

Which is more durable against battery acid - I don't know - the original issue causing the recall?

SS lines if of lower quality SS material can corrode, may be seamed and therefore subject to splitting especially when radiused, and may transfer heat better than non-metallic. Can you say vapor lock? We don't know the quality of materials of the aftermarket SS available on the market - could be good, or bad, we just do not know, but it is a concern.

Nylon lines can melt but not the SS lines, but consider that the system using either material includes rubber lines which are not fireproof so its a moot point.