1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

What have you done to your truck today?

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  #9076  
Old 01-30-2013, 11:09 AM
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Well, nothing today but over the past week, I've set up dual tanks in my 80 flareside haha. I should have a thread on my build soon (phone internet blows and I'm bout to move) almost looks factory. I do have an issue with fuel going between tanks though. From looking under trucks with with fuel injection, the lines spliced into one another so I wonder if I missed something or not.
 
  #9077  
Old 01-30-2013, 11:16 AM
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Your selector valve has to have a port for the return coming back from the regulator and ports for the returns to the tanks. And, the valve has to be working properly. They work off the pressure from the in-tank pump and they don't always line the inlet and return up properly. I've seen them draw from one tank and return to the other. Makes for interesting problems.
 
  #9078  
Old 01-30-2013, 11:48 AM
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Originally Posted by Gary Lewis
Your selector valve has to have a port for the return coming back from the regulator and ports for the returns to the tanks. And, the valve has to be working properly. They work off the pressure from the in-tank pump and they don't always line the inlet and return up properly. I've seen them draw from one tank and return to the other. Makes for interesting problems.
Quite interesting indeed. As I have it set up right now (and worked for about 30 min) the pressure lines from both tanks are connected via a Y fitting (pulled from a newer dual tank f150) as with the return lines all before the inline fuel filters and high pressue pump. I was copying what I did from what I saw on two newer fuel injected fords. All the bullnose I found were all mechanical with just a pressure line or single tank
 
  #9079  
Old 01-30-2013, 11:55 AM
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With the returns Y'd you'll be returning some gas to both tanks and will have an overflow problem at some point. As for the pressure, you will have to be running both in-tank pumps all the time. I would set it up the way it should be with the proper selector valve managing which tank is in use.
 
  #9080  
Old 01-30-2013, 02:31 PM
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Originally Posted by Rotarypowered
Quite interesting indeed. As I have it set up right now (and worked for about 30 min) the pressure lines from both tanks are connected via a Y fitting (pulled from a newer dual tank f150) as with the return lines all before the inline fuel filters and high pressue pump. I was copying what I did from what I saw on two newer fuel injected fords. All the bullnose I found were all mechanical with just a pressure line or single tank
For all browsing this thread, 1985-89 EFI trucks use 2 or three pumps, one or two low pressure in-tank pumps delivering to an automatic changeover valve that also doubles as a reservoir for the frame mounted high pressure pump. There are four or six lines to this changeover valve, four if a single tank, six if a dual tank.

Staring in 1990 Ford switched to high pressure in-tank pumps with shuttle valves in the pump modules, the gauges and senders also changed. These trucks have the two supply lines connected together and the two return lines connected together. These had a recall for fuel transfer between the tanks. It involved adding a check valve on the supply line at each tank. The item in the circle is the check valve on my rear tank.
 
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  #9081  
Old 01-31-2013, 02:04 PM
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82 f-250XLT 6.6 400 wiring problems

Originally Posted by Fordzilla80
I hope you used a tach cluster for another 80 truck or you're gonna have a few problems. lol.

Today I took a nice long look at my new Radio bezel, and realized that I really want to redo my headliner and have the seat re-upholstered so my interior will be complete. Oh yea, I need new carpet too.lol.
looking for some advice on wireing altanator and battery and regulator wondering if u had a pic or s
omething u could send thanks matt
 
  #9082  
Old 01-31-2013, 02:09 PM
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hi gary i have a question bout your 351m

Originally Posted by Gary Lewis
With the returns Y'd you'll be returning some gas to both tanks and will have an overflow problem at some point. As for the pressure, you will have to be running both in-tank pumps all the time. I would set it up the way it should be with the proper selector valve managing which tank is in use.
i have a 82 f250XLT and i was looking fore a diagram or some pics to help me rewire my altanator to my regulator and battery thanks matt
 
  #9083  
Old 02-02-2013, 11:43 PM
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Pulled the old seat out of my '84 XLT and vacuumed the carpet. Got it ready for the '92-96 tan bench with fold down arm rest in middle and lumbar support that I am using for a semi temporary seat until I can find a nice '80-86 seat. Still have to go pick it up at a buddys house.


I also pulled the carpet back and was pleased to find that it still looked new, no rust starting.

Can anyone tell me what the black panel along the back is? None of my other F150s have this.
 
  #9084  
Old 02-03-2013, 08:06 AM
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My assumption has been that it is a filler to make the floor behind the seat level further so it is more useful. But, I really don't know.
 
  #9085  
Old 02-03-2013, 09:05 AM
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I pulled the grill out again, cleaned it up and put a $5 swapmeet find ford oval on it. New ford oval has a '98 part number but fits the factory holes in the grill.
 
  #9086  
Old 02-03-2013, 09:33 AM
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Originally Posted by '86 F150
I pulled the grill out again, cleaned it up and put a $5 swapmeet find ford oval on it. New ford oval has a '98 part number but fits the factory holes in the grill.
Did nothing to the truck, but found a treasure in the street and modded my lunchbox.
 
  #9087  
Old 02-05-2013, 06:23 PM
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Fixing this thing, discovered the one inlet was broken off.
 
  #9088  
Old 02-05-2013, 06:28 PM
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That's the vapor recovery unit. Absorbs gas vapors when the engine is off and gives them back when running. Helps the environment and doesn't hurt performance at all.
 
  #9089  
Old 02-05-2013, 06:56 PM
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My buddy stopped over today, and swapped the seats out. Got my '92-96 style seat for the '84 now. I still would like to find a nice '80-86 style seat but this one will do for now. The interior is coming along. Need to do the door panels next.
 
  #9090  
Old 02-05-2013, 07:13 PM
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Originally Posted by Gary Lewis
My assumption has been that it is a filler to make the floor behind the seat level further so it is more useful. But, I really don't know.

It might be for the optional behind the seat Stowage Caddy and/or Rifle case.

I tried looking that piece up, but could not find anything similar to it.

So that's my best guess...
 


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