International Full Size Jeep Association
Home Forums Reader's Rigs Tech Library Trail Stories FSJ-List
International Full Size Jeep Association  

Go Back   International Full Size Jeep Association > Tire Kickin' > Diesel Swaps

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 07-13-2013, 09:25 PM
Logs0012's Avatar
Logs0012 Logs0012 is offline
258 I6
 
Join Date: Apr 02, 2008
Location: Versailles, KY
Posts: 357
Filler Neck

As I've quietly gone about my 4bt swap, I have put alot of thought into foreseeable changes that would have to be made and problems that might arise. Well, the time has finally come to drive my truck on the road for the first time in three years and I need fuel. For the past year the cummins has been getting fuel via fuel can so this problem never came to mind. So I pull up to the diesel pump and feel awesome, until I go to put the filler nozzle in and "clunk!" The freaking nozzle is to big for the filler neck.

After my short story there, what have y'all done so that you can fill up at the pump?
__________________
Thanks and Gig 'Em
Lincoln Tucker
Fightin' Texas Aggie Class of 2015

Logs0012@windstream.net

1970 J-2000, 4bt, NV4500, NP208 - Back on the road!

Coffee, Whiskey and Women... Always straight
Reply With Quote
  #2  
Old 07-13-2013, 11:41 PM
itselliot's Avatar
itselliot itselliot is offline
350 Buick
 
Join Date: Aug 28, 2010
Location: 49410
Posts: 1,039
fuel filler

Back when I did not want to run unleaded fuel and the difference in pump nozzle sizes dictated that leaded fuel would only be allowed in "older" filler necks because the spout was larger than the unleaded vehicles neck........

I stuffed a rag down the fuel filler hose and used a die grinder to open up the filler neck. Then used a magnet and vacuum cleaner to clean out the chips before removing the rag. Not saying that was a great idea just that is what I did when I had a similar issue and I was in my teens.........

Oh, and they raised the price of gas to take the lead out! That was AFTER raising the price of gas when they first introduced lead INTO the gas ,years earlier.
__________________
If the PM's are full,...try e mail!
hpschrot@hotmail.com
616 four 03 44 0 five
'78 J-20 401 Q/T not quite stock anymore....Frame off Resto Mod..Super Cab nearing completion. SOMEDAY
"90 GW 360/727/229/3:31s 2" lift (SOLD in 2015)
'78 CJ7 Built from Scratch over a 7 year span.
Reply With Quote
  #3  
Old 07-14-2013, 02:06 PM
joe joe is offline
 
Join Date: Apr 28, 2000
Location: PNWet, USA
Posts: 22,392
Is your tank, fill pipe original? I wouldn't think a 1970 would have a nozzle restricter plate in the pipe. Auto parts stores used to sell slip on adapters that fit over a leaded gas nozzle with the output end reduced to fit into an unleaded restricted hole. On other unleaded rigs with the restrictor plate I just used a 12" socket extension and a hammer and just knocked it out(actually knocked it in).It's just spot welded into the normal fill pipe. Shouldn't be an issue on a 70 truck though.
__________________
joe
"Don't mind me. I'm just here for the alibi"
Reply With Quote
  #4  
Old 07-16-2013, 09:22 AM
TrenchFoot's Avatar
TrenchFoot TrenchFoot is offline
Member
 
Join Date: May 13, 2011
Location: SnoValley, WA
Posts: 63
My '78 has the restrictor style filler so I picked up one from a 74 which is wide open, but surprisingly made of black plastic. Not sure what year they cut over but BJ's sells a tank for 70-77 that has a large diameter fill inlet, so that may pair up with the years of the larger fill neck.

But like Joe said, is your fill neck original to a '70?
__________________
'78 Wag, 401/TH400/QT pulling the rust down the road. Chevy 6.2L turbo diesel waiting in the wings...
Reply With Quote
  #5  
Old 07-18-2013, 04:22 PM
Logs0012's Avatar
Logs0012 Logs0012 is offline
258 I6
 
Join Date: Apr 02, 2008
Location: Versailles, KY
Posts: 357
Yes, it is an original '70
__________________
Thanks and Gig 'Em
Lincoln Tucker
Fightin' Texas Aggie Class of 2015

Logs0012@windstream.net

1970 J-2000, 4bt, NV4500, NP208 - Back on the road!

Coffee, Whiskey and Women... Always straight
Reply With Quote
  #6  
Old 07-20-2013, 02:57 PM
TrenchFoot's Avatar
TrenchFoot TrenchFoot is offline
Member
 
Join Date: May 13, 2011
Location: SnoValley, WA
Posts: 63
This is what I picked up for mine, out of a 74 wag. I'd prefer it was metal, but it's made pretty thick and solid.


__________________
'78 Wag, 401/TH400/QT pulling the rust down the road. Chevy 6.2L turbo diesel waiting in the wings...
Reply With Quote
  #7  
Old 07-23-2013, 03:48 PM
asphaltrockdweller's Avatar
asphaltrockdweller asphaltrockdweller is offline
350 Buick
 
Join Date: Jul 09, 2009
Posts: 1,165
Quote:
Originally Posted by TrenchFoot
This is what I picked up for mine, out of a 74 wag. I'd prefer it was metal, but it's made pretty thick and solid.



Take the whole filler there to a muffler shop, and have them make a metal fill tube to the same dimensions.
That is what I did for my 76, and it works great.
__________________
(Ristow) fram....that deserves a ratchet upside the head.
Reply With Quote
  #8  
Old 11-02-2013, 09:14 AM
dusty's Avatar
dusty dusty is offline
Gear Head
 
Join Date: Jul 20, 2006
Location: Left Coast, Right wing. Nor Cal
Posts: 744
look at my build thread if the pictures are still up. i used 70-75 ford pickup bed side mounted fill neck. vans of that era also had similar necks. any leaded setup will have the deep throat . you need the wide deep throat to prevent the foaming from occurring. i think 2 or 2-1/4” fuel hose was it my thread on the rear mounted scout 32 gallon tank swap i think also had some pictures of it and the hard 2-1/4” diameter tube over the frame rail also
__________________
Cherokee S Chief Widetrack W/ Cummins 4bta Diesel, 91 dodge intercooler, hy35/9, AC NV4500/D300 3.54's Ploks 4" BJ's w/ 33's, scout 33 gal fuel tank ( Sold, to a good fsj home)
The 608.9 hybrid dana 44 build

AMC 401 supporter

GO UM Montana Griz

"Dont worry the Coors light engineering department will be documenting this accordingly."
Reply With Quote
  #9  
Old 11-03-2013, 11:38 AM
jaber's Avatar
jaber jaber is offline
Dragin Az
 
Join Date: Oct 17, 2003
Location: Chino Valley, Arizona
Posts: 8,061
Quote:
Originally Posted by asphaltrockdweller
Take the whole filler there to a muffler shop, and have them make a metal fill tube to the same dimensions.
That is what I did for my 76, and it works great.

Did mine myself...
__________________
Jeff


46 cj2a

51 Willys p/u
'51 Willys Parkway Conversion
'74 CJ5
'75 J-20 Wrecker
'75 J-20 Cummins service bed
'77 J-10 p/u
'79 Cherokee
'88 Grand Wagoneer
http://s252.photobucket.com/albums/hh14/jeffaber/

Last edited by jaber : 11-03-2013 at 11:44 AM.
Reply With Quote
  #10  
Old 03-04-2014, 03:34 PM
fountain350's Avatar
fountain350 fountain350 is offline
230 Tornado
 
Join Date: Mar 25, 2011
Location: york,pa
Posts: 4
filler neck

It's probably more work but would give you a lot more capacity. I have a fuel tank with filler neck from a CJ-10A Tug which you could mount in the bed and connect to your stock tank. Next problem is that I am in York,Pa.
Jeff
__________________
CJ-10 owner
Reply With Quote
  #11  
Old 03-05-2014, 05:42 PM
joe joe is offline
 
Join Date: Apr 28, 2000
Location: PNWet, USA
Posts: 22,392
Don't know about your existing fill pipe issues regarding not accepting a dsl nozzle(a 1970 should) but if it won't and you're going to do a pipe swap anyway GO BIG and install a large tank vent and fill pipe vent. For dsl fill pipes/vents bigger really is better.
When pumping dsl fuel it foams up big time (the faster you pump, farther you splash dsl fuel the worse it gets). For a car/pu truck "I" would go with 2" min fill pipe and dedicated 1" tank vent. My Ford with 2 stock OEM tanks has factory fill pipes and venting and I pretty much fill one tank till the foam/back pressure/lack of proper breathing clicks off the nozzle. I then fill the other tank till it clicks off, by then the first tank has settled down to slowly top off, then top off the other tank. My Chev OEM dual tanks don't seem to have the same issue at least not as much. Dunno why it's easier. Point being GO BIG for fill and vent pipes. As large as you can fit.
Also be aware all dsl nozzles don't have the cutesy pressure click off function so when filling stand aside or wear clothes you're willing to toss. Wonderful but nasty stuff dsl fuel is.
__________________
joe
"Don't mind me. I'm just here for the alibi"
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone make a new gas filler neck? Etcetera General FSJ Tech 13 05-13-2012 04:50 PM
Fuel Filler Neck Design catch2otwo General FSJ Tech 11 08-04-2011 02:15 PM
Pics please - earlier 70's Filler Neck Greg Taylor General FSJ Tech 3 12-07-2009 12:50 PM
fuel filler neck bigbird General FSJ Tech 2 05-18-2009 07:12 AM
filler neck help bwa General FSJ Tech 16 10-05-2005 09:40 AM


All times are GMT -6. The time now is 02:34 PM.


Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
corner corner