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dap930 dap930 is offline
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Join Date: Dec 2011
Location: Virginia Beach, VA
Posts: 324
Garage
If you use the factory tunnel lines, the front of them have a 90* bend where barbs are installed to convert over to the rubber hose that goes to the tank return and to pump outlet. I am not sure if the factory replacement hoses are rated for ethanol.

To replace with new factory lines, you need to connect a pull line to the rear of the polymide line and then pull the old line out from the front which will draw your pull cord through the tunnel as the old line is removed. Then connect the rear of the new line to the pull cord and draw it through the tunnel from the rear using the pull cord. Be aware there rubber grommets both front and rear where the polymide lines enter and exit the tunnel. These must removed prior to starting the job and new ones will be required once the tunnel lines have been replaced. They can be a PITA to remove and install. Also, you will likely need to remove the passenger seat, the console to pull up the front carpet to expose the access holes in the tunnel, and the rear cover plate for the shifter coupling to assist with directing the tunnel lines through the tunnel as they can get hung up along the way. There are metal tabs at the front and rear of the tunnel that capture the tunnel lines that will need bent back to free the lines.
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-Dennis
1977 930 Slant, MS3 EFI, Carrera intake, Twin plug, Powerhaus headers, Magnaflow muffler, Garretson intercooler, GTX3071R
Old 01-10-2017, 07:01 AM
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