Fuel Filler Neck Coversion - Defender Source
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  #1  
Old August 15th, 2014, 10:11 AM
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Fuel Filler Neck Coversion

I am swapping my '86 V8 3.5L engine to a 3.9L EFI, and would like to also swap the Fuel Filler Neck to the proper one for Unleaded Fuel with the restrictor.

My current fitted neck attaches to the body via 4 small bolts and nuts, and it looks like the replacement filler necks for the later vehicles attach differently via a round screw on grommet that essentially tightens the neck down (sandwiches) against the body panel. Furthermore, it looks like the cutout in the body panel n my rig is bigger than on the later vehicles.

My question is: Does anyone know what the P/N is for the filler neck that will work on my rig given the above (4 attachment holes, restrictor for unleaded, bigger hole), or failing that, can the newer proper adapter out of a NAS be adapted to fit on my rig?
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  #2  
Old August 15th, 2014, 10:14 AM
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The restrictor was originally created to stop people putting leaded gas in unleaded vehicles.
Suppose it can also stop diesel but I can't be sure about that.
Honestly, I'd stick with what you have.
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Old August 15th, 2014, 10:17 AM
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Fuel Filler Neck Coversion

The current filler doesn't really bother me, and I'm the only one that drives my truck, so no fear of making this mistake, but I would like to register the truck in California, and therein lies the problem. CARB requires the restricted neck and warning label as well!
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  #4  
Old August 15th, 2014, 02:23 PM
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VW did a recall on their diesels a couple of years ago, idiots were actually putting REG in their diesels (I guess since they are so quiet) & destroying the engine. So the VW fix was a filler neck with an even SMALLER hole for the diesel nozzle. The filler hole is actually smaller than the unleaded hole.

Imagine owning a diesel and NOT knowing it was a diesel ??
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Old August 15th, 2014, 02:42 PM
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Quote:
Originally Posted by samer0214 View Post
The current filler doesn't really bother me, and I'm the only one that drives my truck, so no fear of making this mistake, but I would like to register the truck in California, and therein lies the problem. CARB requires the restricted neck and warning label as well!
RDS Has the NAS style neck.
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Old August 15th, 2014, 02:44 PM
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The neck is available at many places, no problem, but the issue is fitment in an older 1986 D110, as the fitting seems different.
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Old August 15th, 2014, 02:54 PM
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Quote:
Originally Posted by Viton View Post
VW did a recall on their diesels a couple of years ago, idiots were actually putting REG in their diesels (I guess since they are so quiet) & destroying the engine. So the VW fix was a filler neck with an even SMALLER hole for the diesel nozzle. The filler hole is actually smaller than the unleaded hole. Imagine owning a diesel and NOT knowing it was a diesel ??
We were on a Harley D road trip with about 20 others. We had stopped in this small town in west Texas to fill up.
We hear someone say "John, that's diesel." We look over and he's laughing like its a joke. He looks down and we "Oh crap! This is diesel."
We had to wait for him to drain his tank.

------ Follow up post added August 15th, 2014 01:55 PM ------

Quote:
Originally Posted by samer0214 View Post
The current filler doesn't really bother me, and I'm the only one that drives my truck, so no fear of making this mistake, but I would like to register the truck in California, and therein lies the problem. CARB requires the restricted neck and warning label as well!
Why does California still have that regulation in effect when there is no more leaded rocket fuel?
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  #8  
Old August 15th, 2014, 03:25 PM
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Why does California still have that regulation in effect when there is no more leaded rocket fuel?

How I remember back when we had 5 Star petrol in the UK
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Old August 15th, 2014, 05:02 PM
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Believe me, that's the easy requirement. Just take a look at what CARB laws are like and I bet you'd wish you were living in the former Soviet Union!
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  #10  
Old August 15th, 2014, 06:33 PM
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Quote:
Originally Posted by Viton View Post
VW did a recall on their diesels a couple of years ago, idiots were actually putting REG in their diesels (I guess since they are so quiet) & destroying the engine. So the VW fix was a filler neck with an even SMALLER hole for the diesel nozzle. The filler hole is actually smaller than the unleaded hole.

Imagine owning a diesel and NOT knowing it was a diesel ??
They are still "fixing" diesels so that people can't fill it with regular. I broke the restricter on mine so i don't have to hold the damn diesel nozzle when i fill up.
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