 Fuel Pump Relocation/ Central Tunnel Lines, Stainless Steel Line diameter when FP relocated |
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| Str1974 |
 Jan 23 2019, 11:31 AM
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#1
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Member  Group: Members Posts: 90 Joined: 23-January 19 From: Dallas Member No.: 22,820 Region Association: Southwest Region  |
(IMG:style_emoticons/default/welcome.png) I purchased a 1974 914 1.8 a few months ago (no rust). Have been replacing rubber, bushings and hoses etc... I replaced the central tunnel plastic fuel lines with new stainless steel lines (one larger diameter/one smaller diameter) for a 1974 model with fuel pump at engine. While replacing the master cylinder and having the tank out, I decided to relocate the fuel pump to the front near the steering rack. My question is: do I have to replace the larger tunnel line with another 8 mm line, or can I relocate the pump to the front and keep the larger line in the tunnel?
I would hate to have to buy another SS fuel line kit to get the both 8 mm lines for 75-76 models, since I just had bought the pre 1974 lines if it was not critical to have both lines 8 mm going to engine, now that the pump is in front. I want to do it the correct way, but can't find info of the correct way for tunnel lines when a pump has been relocated. Any help would be greatly appreciated. |
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| saigon71 |
Jan 23 2019, 11:56 AM
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#2
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Senior Member Group: Members Posts: 1,998 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region 
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I went through this a couple years ago.
I left the larger stainless tank line in & simply used brass fittings to adapt to rubber hose sizes as needed up front. |
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| Str1974 |
Jan 23 2019, 12:08 PM
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#3
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Member Group: Members Posts: 90 Joined: 23-January 19 From: Dallas Member No.: 22,820 Region Association: Southwest Region |
QUOTE(saigon71 @ Jan 23 2019, 11:56 AM)  I went through this a couple years ago. I left the larger stainless tank line in & simply used brass fittings to adapt to rubber hose sizes as needed up front. It doesn't mess with the fuel pressure if the diameter is larger after the fuel pump? |
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| ChrisFoley |
Jan 23 2019, 01:34 PM
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#4
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I am Tangerine Racing Group: Members Posts: 7,924 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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Nothing wrong with leaving the larger supply line in the tunnel.
You need 3 adapters instead of one. In addition to the one at the firewall you need one between the tank and the filter, and one between the pump and tunnel line. |
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