http://dieselplace.com/forum/uploads/Fast_Fill_Neck_000.jpg


Fast Fill Top piece ,ground strap and fill neck.





http://dieselplace.com/forum/uploads/Fast_Fill_Neck_001.jpg


View of vent near top of fill. I had gutted mine so it looked similar if not the same size minus the vent .





http://dieselplace.com/forum/uploads/Fast_Fill_Neck_002.jpg


Same piece but view looking from opposite fill side. Additional vent tube.





http://dieselplace.com/forum/uploads/Fast_Fill_Neck_005.jpg


Tank side piece with vent tube that extends into top of tank.





http://dieselplace.com/forum/uploads/Fast_Fill_Neck_007.jpg


Fuel fill cut. Caution should be taken you don't cut to much out. I followed instructions and wished I had left more in do to the fact there is plenty of room I found to push extra hose on the added pieces. I would of liked the option of shortening a little at a time after making only one cut.


http://dieselplace.com/forum/uploads/Fast_Fill_Neck_008.jpg


Fuel fill down view with hose attached.Also vent line.





http://dieselplace.com/forum/uploads/Fast_Fill_Neck_009.jpg


Completed union.Notice I had minimum clamping area.





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Coolhttp://www.dieselplace.com/forum/smileys/Rock On.gifSo I take it you didn't have to lower the tank? How long did it take?


Josh

Fills fast until you get to the point that the foam starts backing out - watch out! That last few gallons is a PITA as even with the slightest touch on the lever diesel still comes out of the nozzle fast.

Josh





I with my cab /bed configuration it was easy to get to the top of the tank to get to fill hose clamp. Evan still "if" your good with a knife I could see someone not even taking the hose off the tank to cut once marked. Took two hours screwing around and tieing everything back up neat.Like I said I had obsticles.Nicktane filter and lift pump which causes extra plumbing and wires.Plus all my lines for the Propane and switches.





Lakedaisy





Having a 34 gallon tank and no vent previously,only being able to use "small" nozzles on the first click as the big nozzles would just spit fuel bad from start to finish at even the first click ,it will be welcomed if the last few gallons will be a bear. I hope it works that well .





Mac

what was the f word score after 2 hours.....I say 138
http://www.dieselplace.com/forum/smileys/HiHi.gif ..great post gonna have to copy you once again

Propane? Thought you was runnin' #2 only. . .What does the dyno say with it on?

I said "f" a couple times at least ! http://www.dieselplace.com/forum/smileys/Approve.gif


The Propane is for sale . When I removed the Tank and PowerShot system. I have PICS up on Webshots I'll put a link in when the site is back up. If anyone is interested check the classifieds. I didn't remove all the lines and electrical hardware. I have the switches mounted in the center console and the wires run clear into the bed.


I'm gonna gut the hoses and perhaps order a wiring harness when it's sold and reuse switches for other things.


My numbers are all #2.





Mac

Got it. Here I thought you were holdin' back that last little bit of umph for when someone gets a jump on you.http://www.dieselplace.com/forum/smileys/Big Smile.gif


Dennis

Great job Mackin.

My kit was at the house when i got home. I will probably try to set it up this weekend. Thanks for the commentary & the pix.

I will say that it looks like TF sent a pretty good set of instructions, but I like your recommendation of cutting a little at a time on the rubber fill neck hose.

I will let you know how mine turns out. Hopfuly I can do as well as you.

PDS

well fill me in !!! where did you get it and how much and how does it work?

I purchased the Fuel Fill Retro kit direct.


http://www.transferflow.com/


I haven't tried it yet ,my tank is near full and I still get better then 11 MPG at 500 RWHP in a dooley mixed driving.


It will be next week some time unless I do alot of driving this weekend coming.





Mac

You know yours seems to look a bit difference than mine.. wondering if its been redesigned as i got my tank and fill neck back in early 2002...


nice job and thanks for the pics!http://www.dieselplace.com/forum/smileys/Thumbs Up.gif

Do the 2004 lly's already have it? I have filled up several times thru the big truck diesel pumps.

Yes they improved the fill neck on the LLY... i believe the LB7 is worse than the older gm diesel too

Mackin,


Another stupid question: What is the minimum inner diameter of the fill neck? I wanted to compare with mine, the big pumps can fit mine, but a few I've tried have been pretty tight.


Thanks,
Dennis

Ok Guys,

Installed my fill neck kit this afternoon. Everything went pretty much as Makin described, but I wiil say that I do not believe that you really need to cut any sections out of the fueling hose. (i.e.: the 3 1/2" section per instructions). I think it would work just fine by just cutting the hose 1" back from the frame.

Mackin said that he almost did not have enought room cutting the fill hose per the TFI instructions (Mackin, if you cut the full 3 1/2" section out, I still don't know how you got it back together without leaks!!!) I decided that I would only cut 2 1/2" off the hose, saving an extra inch. Well, everything was still tight. I believe that if you just cut the hose, it can slide up & down on the sections far enough to eliminate any sagging.

Time spent was around 2 1/2 hrs. It took a little extra work to get to the top of the fuel tank with out dropping the tank.


baimpala,

I did not notice any major diff in the size of the fill necks, but the vent pipe (internal & external) was a good deal larger, so I would think that the enhanced venting is one of the major advantages to the TFI kit.

Thanks for posting the pix Mackin!

PDSEdited by: Aggie91

Dennis


Sorry for the delay but my gutted filler neck is I would say the same size as the TFI neck. The gutted stock was tight also not allowing any real natural "vent" as the TFI addresses with the external vent.


I'd imagine all three My gutted 01 and the TFI and yours on your truck are all identical in size.


Without measuring knowing that the stock fuel cap is retained in there is no taper to the supplied TFI filler neck.


Soon I will try it and check that vents ability sure looks good.





Mac

Aggie91





Glad to hear it worked out. I did cut my filler hose as instructed by TFI ,by the way they are really good instructions.


You only cut 2.5 inches out as any more would result in a trip to GM for a new filler hose as it is tight.


If I were or anyone else were to do it do what Aggie91 suggest. Cut 1" off the frame and install. There is plenty of extra space to push a couple inches of fuel line on.


I'd imagine you have the smaller tank ? This would help confirm installation is the same for both tanks.





Mac

Yup, I have the 24 gal tank. Everything worked great. All of the instructions worked out fine.

However, as stated, I would just cut the hose, NOT cut out a section.

Also, I re-read my post above & I what I meant to say was that I cut my hose an inch shorter than yours, so I could not see how you got your hose to work without buying a new one.

PDS

The instructions say to measure off frame IIRC 3.5" then 1" and cut out the 2.5" section and that's what i done did.


It was tight no doubt.Cutting 1" off the frame "only" sounds like the way to go.





Mac

Finished mine early this morning ~ very very early. More accurately very very late yesterday http://www.dieselplace.com/forum/smileys/Angry.gif


I've one of the newer Nicktanes and space was very cramped. I found it necessary to drop it down so I could position the TFI. I pulled, pulled, and pulled the OEM filler out. Beginning to think it was an alien implant http://www.dieselplace.com/forum/smileys/Confused.gif


Couldn't get at it to make the 1" mark so did the 3.5" and after removal placed and cut back 2.5". Had me worried ~ but think we did get a lift off finally. The mouth of the new'un seems like the same as the OEM ~ only difference is in venting method near as I can tell. The instructions direct using the 'furnished zip tie to secure the diff vent tube' but I couldn't find it in the kit.


I only problem I had w/the OEM was the puking/foaming or rather, the venting anyway. The large nozzles seemed to fit well enuff. My truck is a 02.


If I were to do this again ~ I'd cut 1'' not a 2.5" section out. Any thots re recycling or alt use for the removed filler?

Another option.


I'm going to try to use an older 6.2/6.5 style filler neck which looks almost identical to the TF upper piece and looks like it would just bolt in. This gives the required vent nipple. I just have to pick up the neck and see if it actually fits...


I recently added a SuperTank so I have 2 1/2" (?) and one 3/8" barbs which can be used for venting. These will be tied together and then into the filler neck. Other vent options would be needed for the stock tank. Maybe a sealed bulkhead fitting? Probably worth the TF money though just to avoid the hassle in that case. But looks to me like the TF setup would be less than ideal the way it vents...


My only concern is for the foaming overflow reported with the TF. The factory addressed this in our trucks by using the inner "hose" that goes to the bottom of the tank. I wonder if a similar 1.25" (or so) hose could be adapted somehow into the TF or older necks and routed to the tank bottom to reduce foaming? I also don't recall it being an huge issue on the older trucks which accepted the large nozzles. Could it be lack of adequate venting in the TF? &lt;shrug&gt;

So Mackin,


Have you tried to fill your tank up yet?


The first time I tried it with a passenger vehicle fuel hose, it was puking back on the 1st notch!!! (really SLOW - NOT what I wanted!)


After some re-adjustments, it will now flow on the first notch of the "big truck" hoses. I still need to do some adjustments to the internal vent hose on my fill neck, but it looks like the optimal setting will be at the 1 or 2 o'clock position instead of the 3 o'clock position recommended in the 'srtuctions.


Let me know how yours turned out


PDS

I put the TFI neck on our truck last fall. You still have to be careful filling due to foaming but having the option of using the truck pumps while towing a 5th wheel on the road made it a must have for me. I cut the filler hose with a hack saw without removing from the tank. (wiped inner surface of hose to remove cuttings after)


Aggie - I think I set the vent hose between 1&amp;2 as you mentioned. Figured 3 would allow some fuel to block the vent.

You could also try using Aviation Snips to cut the hose.


I followed the instructions and it work fine and used the suggested measurements.


Coming home from the Outers Banks we stoped for fuel and guess what......no auto diesel pumps. Pulled around back and used the Big Rig pumps. That alone is worth having this upgrade.http://www.dieselplace.com/forum/smileys/Clap.gif


Let us know how you did on the first fill. FYI when i do use the OTR pumps I only put it on the first click.

First fill up was with a traditional size nozzle and splash guard installed,my regular station I visit.


I was able to have it punched and had to top off less than a gallon to see clear diesel in the neck. http://www.dieselplace.com/forum/smileys/Clap.gif





I then Refilled up North standard size Nozzle but most definitely increased pump flow. I only was able ,or should I say dared to run it on the first click do to no splash guard. When it clicked off it splashed enough to get a bit of a wash.http://www.dieselplace.com/forum/smileys/Angry.gif


Added pumping volume did result in a slower top off do to the extra foam it was making.


Still need to get to an official Truck Pump,perhaps this week.





Mac

Here's what I found out.


Went to a Fast Fill lrg nozzle filling station.I found that If I punched it full it would kick out.I could fill on the second notch but it would perodically kick off.


Filling on the first click was not a problem.


Never spilled a drop.I wonder if it was mostly a foaming issue that caused the kick out of the nozzle?Foaming isn't an issue with big rig saddle tanks,what these high volume pumps were designed for.http://www.dieselplace.com/forum/smileys/Embarrased.gif


Nontheless I'm 99% Happy and the upgrade was worth it for me as I can now fill any where.





Mac Edited by: Mackin

I installed my TFI last night. All went well, I just made the cut, I didn't cut any out and seem to fit well. I was able t reach over the frame and unhook the filler hose from the tank fairly easy. All in all it took about an hour in the dark. I will get to test it this weekend, I hope all goes well. After my last trip where I had to hold the lever because I couldn't even use the first click, this should be nice. Thanks for all the advice you guys.

Hi it's me, the resdent GreenHorn


So my 05 already has a big filler neck, right?


I stopped at a local truck stop to put my first tank of fuel in and I pulled into the same stall the bigrigs use and WOW that pump was freakin JAMMIN and had a huge spout, fit right in. So I slowed it down to the first notch. Filled fine from there.


anyway I haven't found out for sure if the filler on my 05 is as big as this one you all are talking about, is it?

Yep, if it fit the 'big' pump from a OTR fuel station, you're all set.

Cool Thanks!


Have a GREAT weekend, this site ROCKS by the way!


Thanks for putting up with my dumbass questions.


Burt

The only dumba$$ question is the one not asked.



Dennis

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