Fuel pump relocation front or rear? Type? |
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Fuel pump relocation front or rear? Type? |
Joec |
Jul 22 2021, 11:40 AM
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#1
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Newbie Group: Members Posts: 16 Joined: 26-April 21 From: Delta, BC Member No.: 25,484 Region Association: None |
Brand new to the 914 world. My car, a 74 2.0 was parked for 25 years, bought as a roller. Now missing the fuel pump( among other stuff) looks like it was plumbed for a 2 port pump anyway as 1 line to the injectors with a return line only at the end of the run, no y connector. I plan to replace all of the fuel lines so now is the time to place the pump. Seems real easy to place on firewall as lots of room there. I have read countless articles but not much recent stuff and most are vague with instructions assuming I have full comprehension of the car, which I don't. It sounds like stainless lines in the tunnel are a must, what fuel pump is suggested? Front or rear?,modify and put in tank?? Suggestions or point me to a current article. Any help really appreciated.
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Joec |
Sep 21 2021, 04:12 PM
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#2
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Newbie Group: Members Posts: 16 Joined: 26-April 21 From: Delta, BC Member No.: 25,484 Region Association: None |
All ready to order new stainless fuel lines for the tunnel and after talking to Auto Atlanta they suggest not replacing the lines in the tunnel as they are not prone to failure. Any thoughts? I had planned on replacing all of the fuel lines.
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jcd914 |
Sep 21 2021, 05:59 PM
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#3
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
All ready to order new stainless fuel lines for the tunnel and after talking to Auto Atlanta they suggest not replacing the lines in the tunnel as they are not prone to failure. Any thoughts? I had planned on replacing all of the fuel lines. Not advise I would take. The tunnel lines do fail and then you are sitting in a car with fuel inside with you. Not someplace I want to be. They are almost 50 year old plastic not designed to hold the pressure of the Fuel Injection system, just the weight of the fuel in the tank. If you move the pump up front you are now running high pressure fuel through the plastic line. Does AA even sell the SS lines? Jim |
windforfun |
Sep 21 2021, 06:07 PM
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#4
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Senior Member Group: Members Posts: 1,835 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None |
All ready to order new stainless fuel lines for the tunnel and after talking to Auto Atlanta they suggest not replacing the lines in the tunnel as they are not prone to failure. Any thoughts? I had planned on replacing all of the fuel lines. Not advise I would take. The tunnel lines do fail and then you are sitting in a car with fuel inside with you. Not someplace I want to be. They are almost 50 year old plastic not designed to hold the pressure of the Fuel Injection system, just the weight of the fuel in the tank. If you move the pump up front you are now running high pressure fuel through the plastic line. Does AA even sell the SS lines? Jim Several older mechanics from Europe who have worked on 914s for many years have told me that the plastic fuel lines are bullet proof. Go figure. The added pressure may be an issue. BTW, it's advice, not advise. |
jcd914 |
Sep 21 2021, 07:44 PM
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#5
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
All ready to order new stainless fuel lines for the tunnel and after talking to Auto Atlanta they suggest not replacing the lines in the tunnel as they are not prone to failure. Any thoughts? I had planned on replacing all of the fuel lines. Not advise I would take. The tunnel lines do fail and then you are sitting in a car with fuel inside with you. Not someplace I want to be. They are almost 50 year old plastic not designed to hold the pressure of the Fuel Injection system, just the weight of the fuel in the tank. If you move the pump up front you are now running high pressure fuel through the plastic line. Does AA even sell the SS lines? Jim Several older mechanics from Europe who have worked on 914s for many years have told me that the plastic fuel lines are bullet proof. Go figure. The added pressure may be an issue. BTW, it's advice, not advise. I am an older mechanic, although I only worked professionally for 20 years (3 Porsche dealers,1 independent), short by some standards. I have seen personally several 914s, where those bullet proof plastic lines failed and leaked without the pressure of the relocated pump and I would not trust them. And 914s weren't even that old when I was working on them full time. Jim |
Steve |
Sep 22 2021, 02:55 PM
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#6
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914 Guru Group: Members Posts: 5,613 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
All ready to order new stainless fuel lines for the tunnel and after talking to Auto Atlanta they suggest not replacing the lines in the tunnel as they are not prone to failure. Any thoughts? I had planned on replacing all of the fuel lines. Not advise I would take. The tunnel lines do fail and then you are sitting in a car with fuel inside with you. Not someplace I want to be. They are almost 50 year old plastic not designed to hold the pressure of the Fuel Injection system, just the weight of the fuel in the tank. If you move the pump up front you are now running high pressure fuel through the plastic line. Does AA even sell the SS lines? Jim Several older mechanics from Europe who have worked on 914s for many years have told me that the plastic fuel lines are bullet proof. Go figure. The added pressure may be an issue. BTW, it's advice, not advise. I am an older mechanic, although I only worked professionally for 20 years (3 Porsche dealers,1 independent), short by some standards. I have seen personally several 914s, where those bullet proof plastic lines failed and leaked without the pressure of the relocated pump and I would not trust them. And 914s weren't even that old when I was working on them full time. Jim Back in the late 70's, i had a 71 that was victim of an engine fire. It was the lines in the engine compartment. Back then there was a campaign by Porsche to replace all of the engine compartment fuel lines on the stock injection. Those fabric covered lines are horrible. I also just pulled a tank on a 75 and the original fabric covered lines broke in half and made a mess. |
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