The NSX’s stock 155lph fuel pump reportedly maxes out around 400whp which will not suffice for our turbocharged 500whp+ goal. We upgrade the factory pump with the new Walbro 416 E85 compatible fuel pump and visit our friends at Brown and Miller Racing Solutions for motorsport-grade alcohol approved fuel lines, fittings, and electrical wiring. We finish the build by taking our hanger to be PTFE coated by Calico coatings.
In Part 5, with only headers, exhaust, and some intake manifold work, our Project NSX produced an impressive 269whp which equates to ~315bhp from our naturally aspirated 3.0L C30A motor. With the turbo motor coming together and plans to almost double the power that we’ve already made, our stock 155lph fuel pump is not going to be up for the challenge.
Just like an open-wheel racecar or purpose built prototype, the NSX’s fuel cell is located low to the ground and between the driver and the engine. This is in an ideal location for center of gravity, center of mass, and has very little effect on the car’s balance as fuel is used.
While the NSX’s fuel tank is in an ideal location for performance, servicing anything pump related requires dropping the entire fuel cell which is not an easy task. Since we are not sure if the car will ever run on E85, we decided to build it right the first time and make everything compatible to run on both E85 and Alcohol just in case.
6 comments
This looks so clean! Can I get a parts number list for the fittings/lines/bulkhead connectors please? Thanks!
Thank you. Contact Brown & Miller Racing Solutions and tell them the dimensions of the shaft and barb of your fuel pump fitting (I can’t remember off-hand) and they will get you the correct part number. The wire bulkhead connector is ATL CFD-504.
Great solution.
Only issue is wire configuration: fuel vapour will travel up through the wire – wire can never be installed like this; a better solution is to connect each end independently to studs.
Those bulkhead wiring connectors have been used in professional motorsports for decades without issue.
This sort of bulkhead wiring has been done by OEM’s and in Professional motorsports for generations.
What made you decide to keep the factory return hard line? With all the work already done, did you consider making the return line bigger?