- Corvette Addict
- Posts: 928
- Joined: Apr 8th, 2010 4:35 pm
- Tell us about your Corvette: 1995 Targa Top Coupe, Stock 350/300 hp LT1 Automatic
1968 Full Custom Corvette Convertible, 454/425 hp, Turbo-Hydromatic 400 Transmission with shift kit and stall converter. 1965 High Performance Resto-Mod Coupe, 350 LT-1/390 hp Kiesler 5-Speed
- Location: Pinellas Park, Florida
You must measure the full depth of the tank where the pump is installed, subtract the height of the pump from that reading and cut the fuel tube to that length. Once the fuel tube is cut to length, you heat the end of the tube with a hot air gun to make it slightly plyable and insert the fuel pump into the tube. Then you cut the return line to the correct length, tie wrap them all together, plug in the fuel pump and the unit is ready to install in the tank. Here is the assembled pump.
The sending unit comes assembled and just needs to be installed in the tank. They make several styles, but only one (the most expensive one, naturally) will work correctly with the factory fuel gauge.
Once I am finished installing the rear lower valance bonding strips I can install the fuel tank. Until then, I am starting to work on the engine side. After removing the carburetor, I installed the fuel injection throttle body. The front hose will connect to the fuel filter and supply fuel to the throttle body. the rear hose gets connected to the stock fuel line and is the return to the fuel tank.
The reason I am using the stock fuel line as a return line and installing a new fuel hose for the supply is the return line is under very little pressure and the connection being a hose clap and nipple will not hold the full fuel pressure of the high pressure fuel pump. The supply hose requires AN-6 type fittings which cannot be reliably installed on the steel tubing and be guaranteed not to leak, at least not to my comfort level. Since I needed to install at least one additional line, I elected to make it the supply line with all high pressure fittings.
The hose is a nylon center hose with several layers of stainless steel braid to give it the strength it needs and is good for all types of fuel including gasoline and ethanol. I purchased a part that installs on my vise to put the hose fittings on the high pressure hose. It's pretty cool actually.
It mounts with little magnets to the vice jaws and holds the fitting and hose so you can insert the other fitting part and make the high pressure connector.
Installed in my vise with a fitting in the jaws.
First put the female part of the connector over the end of the hose.
Then insert the female connector and hose into the tool in the vise.
Next insert the male portion of the fitting and screw it fully into the female part of the fitting.
This creates a leakproof high pressure hose fitting that screws onto an AN fitting.
I also took the time while the carburetor was off to polish the aluminium intake manifold. Much easier with nothing there to get in the way.