Project FI has begun
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
Project FI has begun
I have started the Arizona Speed EFI conversion on my 63'. First thing is to plumb a fuel return line. I decided to put it in the fuel filler neck. I bent a 3/8" steel line to go down to the bottom of the tank so it doesn't cause any splash (and air bubbles) in the tank.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
The filler neck is back on the tank with the return line plumbed in.
I used extreme pressure aeroquip 3/8" rubber line from the return tube in the filler neck, across the top of the tank, along the inside of the frame rail on the passenger side and out the hole in the rail in front of the back tire. I used steel line where it is exposed here.
I snaked the rubber line along the top of the frame rail beside the brake line. It will be well protected up there.
I installed a 10 micron Walbro filter for the pre-filtration prior to the electric pump.
I will be installing this high pressure Walbro in-line fuel pump at the other end of the steel line on top of the frame rail between where the battery sits and the firewall.
I used extreme pressure aeroquip 3/8" rubber line from the return tube in the filler neck, across the top of the tank, along the inside of the frame rail on the passenger side and out the hole in the rail in front of the back tire. I used steel line where it is exposed here.
I snaked the rubber line along the top of the frame rail beside the brake line. It will be well protected up there.
I installed a 10 micron Walbro filter for the pre-filtration prior to the electric pump.
I will be installing this high pressure Walbro in-line fuel pump at the other end of the steel line on top of the frame rail between where the battery sits and the firewall.
Pro
Joined: Oct 2001
Posts: 621
Likes: 1
The EFI unit looks very good on there. You can't beat EFI for driveability.
From what I have read, electric fuel pumps do not like to pull the fuel a long distance, and should be placed close to the fuel tank. Maybe this one is different, but I would ask Arizona speed if you proposed mounting point is OK - trying to help you avoid any problems.
From what I have read, electric fuel pumps do not like to pull the fuel a long distance, and should be placed close to the fuel tank. Maybe this one is different, but I would ask Arizona speed if you proposed mounting point is OK - trying to help you avoid any problems.
Le Mans Master
Joined: Nov 2009
Posts: 5,442
Likes: 64
From: 50 kilometers outside Oslo Norway
The fuel injection unit looks great and this is a thread that i will follow 
Are you installing one electric fuel pump on each line?
How far down in the tank did you put the teturn line? If you run the return line to far down in the tank do you think that it can disrupt the fuel level sender?
Is the filler neck made of steel?(i have a friend that is a master welder on both steel and aluminum)
Are you installing one electric fuel pump on each line?How far down in the tank did you put the teturn line? If you run the return line to far down in the tank do you think that it can disrupt the fuel level sender?
Is the filler neck made of steel?(i have a friend that is a master welder on both steel and aluminum)
Last edited by TheSaint; Oct 23, 2010 at 05:23 PM.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
Hi Saint, yes I think these Arizona Speed units look the most like an original Ram jet. I will even be able to use the stock FI air cleaner.
You only need one fuel pump on the feed line. It needs to be high volume and supply a minimum of 42 psi.
The return line is bent to go way over to the far side of the tank (opposite side of the fuel float and pick-up) about 2 inches from the bottom. Hopefully I won't get any float interference. I posted a pic of it at the top.
Yes, the filler neck is made of steel and I'm certain the tube could be brazed in. I am a crappy welder so I opted to try JB Weld. It did a great job and seems to be solid. If it doesn't hold I can pull it back out and get it brazed.
I will keep posting as the project progresses.
You only need one fuel pump on the feed line. It needs to be high volume and supply a minimum of 42 psi.
The return line is bent to go way over to the far side of the tank (opposite side of the fuel float and pick-up) about 2 inches from the bottom. Hopefully I won't get any float interference. I posted a pic of it at the top.
Yes, the filler neck is made of steel and I'm certain the tube could be brazed in. I am a crappy welder so I opted to try JB Weld. It did a great job and seems to be solid. If it doesn't hold I can pull it back out and get it brazed.
I will keep posting as the project progresses.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
The EFI unit looks very good on there. You can't beat EFI for driveability.
From what I have read, electric fuel pumps do not like to pull the fuel a long distance, and should be placed close to the fuel tank. Maybe this one is different, but I would ask Arizona speed if you proposed mounting point is OK - trying to help you avoid any problems.
From what I have read, electric fuel pumps do not like to pull the fuel a long distance, and should be placed close to the fuel tank. Maybe this one is different, but I would ask Arizona speed if you proposed mounting point is OK - trying to help you avoid any problems.
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Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
The O2 sensor and the knock sensor have been installed. I will have to leave off the chrome "V" plug wire cover on the drivers side to accommodate the knock sensor which screws into the water jacket plug.
Racer
Joined: Sep 2008
Posts: 343
Likes: 50
From: Marietta GA
Thanks for the post an I too will be following. Just one comment. You may only have the system mocked up in the pics but I would consider changing your hose clamps to the modern Fuel Injection style hose clamps designed for the higher fuel pressures developed with EFI. Good luck with the conversion!
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
The hose clamps in the picture are on the return feed line where the pressure is minimal. The pressure line (where you see the filter) is aeroquip push on fittings and hose that doesn't require hose clamps at all (although I put some on anyways).
Le Mans Master
Joined: Nov 2009
Posts: 5,442
Likes: 64
From: 50 kilometers outside Oslo Norway
Just a thought but if you put some kind of fuel filter on the return pipe you made that goes to the bottom of your tank it might be better than just the pipe?
Thinking of disrupt of the fuel level sender
Just a thought
Thinking of disrupt of the fuel level sender
Just a thought
Race Director
Joined: Oct 2005
Posts: 12,464
Likes: 1,548
From: Camp Verde AZ
C1 of Year Finalist (performance mods) 2019
2017 C1 of Year Finalist
If that unit was supplied with a delphi MEFI ECU, keep in mind that you can always change it out for an Accel or FAST, or Mortec ECU and wiring harness if the MEFI doesn't tune as well as you would like it to.
I under stand they have a MEFI 5 out now, which may be better than the 4b that I tossed in the trash due to its lack of true sequential capability, and failure to go into closed loop.
Doug
I under stand they have a MEFI 5 out now, which may be better than the 4b that I tossed in the trash due to its lack of true sequential capability, and failure to go into closed loop.
Doug
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
It did come with the MEFI 4b. I upgraded from the narrowband O2 sensor to the racepak wideband O2 sensor and definately want to run it in a closed loop. I will keep that in mind if I have problems.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
I have mounted the fuse box, relays and ECU to this board. I will be attaching the board to the firewall way back under the fender across from the washer bottle. The two wires hanging down at the bottom go to ground and the wideband O2 sensor
This is the other end of the harness that hooks up to the MAP, IAC, Air temp, water temp, throttle position, knock sensor and the 8 injectors.
This is the other end of the harness that hooks up to the MAP, IAC, Air temp, water temp, throttle position, knock sensor and the 8 injectors.
Le Mans Master
Joined: Nov 2009
Posts: 5,442
Likes: 64
From: 50 kilometers outside Oslo Norway
Must say its a clean look. Not a bunch of wires everywhere
I have mounted the fuse box, relays and ECU to this board. I will be attaching the board to the firewall way back under the fender across from the washer bottle. The two wires hanging down at the bottom go to ground and the wideband O2 sensor
This is the other end of the harness that hooks up to the MAP, IAC, Air temp, water temp, throttle position, knock sensor and the 8 injectors.
This is the other end of the harness that hooks up to the MAP, IAC, Air temp, water temp, throttle position, knock sensor and the 8 injectors.
Thread Starter
Burning Brakes
Joined: Jan 2009
Posts: 922
Likes: 2
From: Delta BC
Well the aluminum vortec heads have finally arrived. We had to grind out the kidney shaped combustion chambers to accommodate the high domed pistons.
I filled the "accessory holes" on the ends.
I painted the heads orange to retain the stock flavor. Here they have the zinc primer.
Here they are on the block.
We'll put the rockers on tomorrow then mount the FI unit.
I filled the "accessory holes" on the ends.
I painted the heads orange to retain the stock flavor. Here they have the zinc primer.
Here they are on the block.
We'll put the rockers on tomorrow then mount the FI unit.
Last edited by Glasshole; Nov 20, 2010 at 08:35 PM.
