Fuel Line Update, Winter Project Options

[SteveL]

74 1.8 - I previously replaced the 3-port fuel pump with a 2-port pump, mounted to the engine firewall. I have since sent the 3-port pump in for rebuild and have it back.
I have been fighting fueling issues for a long time - fuel pressure drops to 0, engine bogs down/dies. Wait a couple minutes and starts again. I'm down to assuming that there must be a fuel line kink, or a fuel line collapsing somewhere.
SO - winter project - All New Fuel Lines.
I need some help from the collective brain trust please. Do I:

1: Move fuel pump to frunk by spare tire, stainless lines thru tunnel, new rubber lines everywhere else
2: Leave fuel pump on engine firewall, stainless lines thru tunnel, new rubber lines everywhere else
3: Revert back to stock setup with 3-port pump, stainless lines thru tunnel, new rubber lines everywhere else

To complete the above - what do I need to order for the stainless line update, and who is the best to order from? Are they all made by the same person, or are there differences? (and do I need the reducing stainless line from CFR?)

Thank you in advance for all the help - Steve

[jhynesrockmtn]

I would vote for 1. In my 1970, I've been running a 2 port for a few years. I used a mounting kit from Tangerine Racing that placed it near the steering rack. I also used his lines. He's really good to work with. I put it near the rack because some PO had mounted a pump to the rack itself with some zip ties so the wiring was there already. I don't think the 2 port is your issue unless it is old and not functioning.

If your fuel tank isn't in really good shape, sediment can settle when parked, then get kicked up when moving and clog the fuel sock in the tank. I had this issue and it would start fine, then once moving die.

[mepstein]

CFR/tangerine racing has everything you need and Chris is a great resource. Just call or email him and he’ll put together a kit to make it easy. He’s supported our cars for decades and is great to work with.

[914werke]

Here is an option. :0

https://914werke.com/shop/ols/products/fi-p...-relocation-kit

[Artfrombama]

74 1.8 - I previously replaced the 3-port fuel pump with a 2-port pump, mounted to the engine firewall. I have since sent the 3-port pump in for rebuild and have it back.
I have been fighting fueling issues for a long time - fuel pressure drops to 0, engine bogs down/dies. Wait a couple minutes and starts again. I'm down to assuming that there must be a fuel line kink, or a fuel line collapsing somewhere.
SO - winter project - All New Fuel Lines.
I need some help from the collective brain trust please. Do I:

1: Move fuel pump to frunk by spare tire, stainless lines thru tunnel, new rubber lines everywhere else
2: Leave fuel pump on engine firewall, stainless lines thru tunnel, new rubber lines everywhere else
3: Revert back to stock setup with 3-port pump, stainless lines thru tunnel, new rubber lines everywhere else

To complete the above - what do I need to order for the stainless line update, and who is the best to order from? Are they all made by the same person, or are there differences? (and do I need the reducing stainless line from CFR?)

Thank you in advance for all the help - Steve

I am far from an expert, but I also have a 74 and have had my share of fuel delivery problems. I did replace my OEM fuel lines with stainless, 4 pcs from Pelican. My three port pump was rebuilt when I bought the car and works great! One hot day my car wouldn't start, I thought the notorious 914 vapor lock but turned out to be a kinked fuel line underneath the tank.
I've never had a vapor lock problem with the stock pump in the factory location and I live in the Sunny South.
Your results may vary.
I have installed a fuel pressure gauge visible from outside the car "just in case".

[JamesM]

Pump in the front somewhere under the tank

Absolute must, Porsche /VW figured this out as the solution in 1975

Other things you should do, eliminate any pre pump filters and use a high pressure low micron post pump filter. VW figured this addition out later on in the 80s.

Start there.

[KSCarrera]

I have been fighting fueling issues for a long time - fuel pressure drops to 0, engine bogs down/dies. Wait a couple minutes and starts again.

That sounds like a lack of fuel tank venting - check the vent line isn't kinked or blocked. You could also try driving with the gas cap loosened a couple of turns to see if the problem reoccurs.