We used the same Earls -8AN Male to ½” Tubing adapter for the ½” (-8AN) feed line, and for the stock return line, we used an Earls -6AN Male to 5/16” Tubing Adapter.
We attached the ½” (-8AN) Earl’s Super Stock fuel feed hose and 3/8” (-6AN) return hose to the hardlines and ran them up over the top of the subframe like the factory.
We ran the -8AN fuel feed line to the Deatschwerks DWFF110 Fuel Filter that we mounted on the back side of the subframe. This in-line filter is compatible with pump gas, race gas, MTBE, ethanol, methanol and diesel. It features a 10-micron 304 stainless steel mesh, and Viton o-rings in a T6061 anodized aluminum case that has a flow rating of 800lph at 5u. DW recommends a maximum service interval of 12 months or 12,000 miles. Mounting the filter here makes it very easy to service compared to the hard to reach factory fuel filter.
From the fuel filter, the -8AN Earl’s Super Stock Hose attaches to the fuel hangar that we made in Part-32, along with the -6AN return line from the main hardline.
This completes the fuel system of our FD and we should now be set with over 600whp of capability thanks to running (6) Deatschwerks 1,500cc injectors, DW fuel filter, -8AN fuel lines, and a plethora of Radium Engineering fuel components from Top Feed Fuel Rails to Regulators, Pulsation Dampers, and Low-Profile Swivel Fittings.
Stay tuned for the next installment!
7 comments
I am still here, consuming every FD update. This thing gets more awesome with every post!
Thank you 🙂
Great series. What’s the story with aluminium fuel hardline and ethanol-based fuel? My (limited) understanding is that aluminium needs to be anodised at minimum to protect it from the jungle juice.
Yes, ethanol can corrode aluminum, particularly when it contains water or in high-concentration blends The alcohol reacts with the metal to form aluminum alcoholate, causing white, chalky corrosion, pitting, and potential, severe damage to fuel systems.
Thank you. E85 is hygroscopic and will absorb water which can lead to aluminum corrosion only if it sits for long periods of time. Raw ethanol is generally safe for aluminum. Since we will not store or let the car sit with E85, running the aluminum hard lines will not be a problem. We will also be running drums of Ignite ethanol, so that further reduces this concern.
Very cool updates.
As part of the testing you’re doing for the single pump setup, how does the cost of making the larger aluminum fuel feed line compare to adding a 2nd fuel pump and using the stock feed line?
There are many solutions to a given problem. We wanted to find the maximum power the 415 LPH DW400 fuel pump can support on a rotary without fuel line restrictions. Once we reach that point, we will turn to a brushless single pump solution based on the layout of our fuel starvation solution in the previous article.