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1965-70 Mustang Fuel Filler Necks modified to ELIMINATE Splash-Out

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Are you tired of dealing with the possibility of splash-out when filling your classic Mustang with fuel ??    I was certainly fed up with gas pump drama with my 1969 and searched the internet for solutions a few times over the years and basically found nothing.   

In the fear of splash-out onto my bumper, license plate, and the painted surfaces around & below the filler neck I would squat down with my ear near the pump nozzle and listen to the fuel going in.   Listening carefully, you can hear the sound change as the tank gets full and the goal was to release the lever in time to avoid splash-out.   This was always a nerve-wracking routine, especially if there were other noises (traffic, etc.) to distract concentration so I dreaded the experience at each fill up.   I've owned this car for 38 years and this problem has been a part of fueling since the late 80's when leaded gas disappeared.   The leaded nozzles were designed to shut-off in an open filler neck, so my guess is they were more sensitive than unleaded nozzles.   However a defective leaded nozzle could cause splash out too, so it was still a crap shoot even prior to unleaded gas becoming the only option.

Anyway, I finally found someone who installed an off-the-shelf "unleaded fuel insert" that was a viable solution (credit goes out to forum member Mach1 Driver).   His method however required major neck modification ... including cutting ... which was not appealing to me.   So I ordered a couple of the same inserts to play with hoping to come up with an easier solution.   After some brainstorming, I ended up adapting the insert to fit up the neck with minimal modification to the neck itself ... far simpler.  

 I've now had it in my car for over a year and it is by far the most functional mod I've ever done.    Like a modern car I can now just put the nozzle in, set the nozzle flow on the 1st or middle notch, let go, stand back, and wait for the nozzle to shut-off on it's own like it is supposed to do ... with ZERO SPLASH-OUT.

To be able to finally fuel up my classic Mustang  without any drama and "hands-free" is pure satisfaction.

I then realized there are 9 different 1965 thru 1970 Mustang Fuel Filler Neck variations available, so I bought a sample of each and figured out how to adapt the insert to each one.   There are both painted/powder coated and zinc plated necks and both styles are available for all years but 1970 ... which so far I've only found painted/powder-coated versions.

I sell both complete new necks with the insert installed as well as insert kits with instructions for your own installation.   If you want to do your own install I strongly recommend using a new neck, and I show all the necks that I know work on page 2 of my Price Sheet (page 2 of Tool List has even more details).

See attached PDF files for all the details including pricing and contact info.

 

 

Fuel Filler Insert Tool List-R4.pdf Fuel Filler Insert Instructions-R6.pdf

Fuel Filler Neck & Insert Kit Price list.pdf

Edited by stangs-R-me
Updated Price List

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Thanks to all you on this forum who bought insert kits from me in early 2018.  

I've since sold around a dozen complete necks to people who read the old thread and contacted me.  

Figured it was maybe time to actually "try" to sell these things, so I worked up a sales pitch and finally got around to posting it here as a brand new thread.

Thanks again,

Doug 

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SOLD! Well, not yet.. .look for an email soon though! I'll definitely be contacting you for one. I just put the tank back in ran lines etc and was digging up the old threads on the modification. I'll gladly hand over some $$ to save me the labor on this one. 

Nice work! The last time I filled the tank some guy was chatting me up about the car....total splash out. embarrassing.  

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FYI:

For those non-forum-members who find this thread, you will not be able to download the pdf's in the 1st post without becoming a member.

If you have a 69-70 Mustang or have a passion for these model years, by all means join this wonderful forum full of 69-70 owners & enthusiasts that are very knowledgeable and helpful.   if you have no real interest in the 69-70 model years you can instead send me an email at stangs.r.me@gmail.com and I will reply with the docs attached.

Thanks,

Doug

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Sold my remaining '67-68 and 1969 Painted Necks that were clearance so I removed them from the price list in the original post.  

I also added a note that if you have a 1969 with a 22 Gallon tank (either stock 1970 or an EFI Conversion Tank) you need to use the 1970 Neck.

 

Also, any of you that bought insert kits from me back in March-April 2018 (17 people / 21 inserts total) and the neck you planned to install it in is either a stock style '65-66 Neck, '65-66 or  '67-68 Conversion necks (that I realized later needed to be crimped down smaller due to different tubing used on these necks), I will do an EVEN EXCHANGE for the correct insert for your application.   Just ship it back to me pre-paid and I'll ship the one you need back pre-paid. 

Doug

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