With the engine in, I could start connecting up the fuel lines in the engine bay and routing them down to join up with the supply and return hardlines.
As I'm running fuel injection I needed a fuel pressure regulator to supply a constant 58psi to the injectors. I bought an Aeromotive A1000 High Flow regulator with -6 inlet ports to match my supply line from Summit Racing. This is a 3-port regulator and so is installed into the fuel supply line ahead of the fuel rail; there is then one port that supplies pressurised fuel to the fuel rail and the bottom port returns excess fuel back to the tank.
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| Aeromotive A1000 Fuel Regulator...shiny... |
The regulator ports needed some -6AN to ORB-6 adaptors fitting to allow connections to the braided fuel lines to be made. I removed the brass plug on the front and installed a fuel pressure gauge into the port using some PTFE tape to help with the sealing.
The regulator comes with a mount suitable for fixing to a flat bulkhead. However, I decided to fit mine as close to the engine as possible and mount it onto the tubular chassis bracing. This meant I needed to make up my own bracket. I designed a bracket in CAD and printed out a "flat sheet metal" template which I stuck to some 2mm sheet steel and used to cut, drill and bend bracket into shape.
I could then make up the fuel line between the regulator and the fuel rail; this was a short hose with a 90-degree -6AN fitting at the regulator end and a straight -6AN fitting to connect to the fuel rail connector. The fuel rail connector I bought was a 90-degree item, with the usual 3/8" GM push-fit connector to the fuel rail and a -6AN female fitting on the other end.
I made up two oversize lengths of braided line; one with a 45-degree -6AN fitting for the line which will come up from the supply hardline and one with a 90-degree fitting from the bottom of the regulator which will then run across the engine bay and down to the return hardline. I will finalise these connections once I know exactly how I am going to route the braided lines down to the hardline fixed to the chassis rails.
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| Paper template used to cut blank from 2mm steel sheet |
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| Using a 25mm diameter aluminium bar as a former for the curved section |
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| The final 90-degree bend formed |
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| 2No. M5 Rivnets fixed into bracing tube... |
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| ...and mount fixed in place with 2No. M5 button head screws |
I could then make up the fuel line between the regulator and the fuel rail; this was a short hose with a 90-degree -6AN fitting at the regulator end and a straight -6AN fitting to connect to the fuel rail connector. The fuel rail connector I bought was a 90-degree item, with the usual 3/8" GM push-fit connector to the fuel rail and a -6AN female fitting on the other end.
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| -6AN Fuel Rail connector purchased from Torques UK... |
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| ...is a simple push-fit onto the fuel rail |
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| Completed fuel line from the regulator to the fuel rail |
I made up two oversize lengths of braided line; one with a 45-degree -6AN fitting for the line which will come up from the supply hardline and one with a 90-degree fitting from the bottom of the regulator which will then run across the engine bay and down to the return hardline. I will finalise these connections once I know exactly how I am going to route the braided lines down to the hardline fixed to the chassis rails.
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| Fuel regulator and lines - sorted! |
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