Jump to content
rwcstang

Fuel Neck Filler Mods?

Recommended Posts

Hi Doug.

I just put 3 tack welds around the outside. If I did it again I would probably drill 3 holes through the filler and plug weld it to the insert. That may look a bit neater .

Share this post


Link to post
Share on other sites
On 4/30/2018 at 9:18 AM, Shep69 said:

Hi Doug.

I just put 3 tack welds around the outside. If I did it again I would probably drill 3 holes through the filler and plug weld it to the insert. That may look a bit neater .

That's how I envisioned doing it too and also wondered whether holes should be drilled first.   I'll have to bring a neck to my buddy that does a lot of TIG welding to see how he would do it.   To avoid re-plating or painting I was thinking a 1-2" wide band of heat shrink tubing around the area may be a way to pretty it back up and protect the bare steel where the plating or paint burned away.

Doug   

Share this post


Link to post
Share on other sites
16 hours ago, Mike65 said:

Performed the filler neck mod on my 69 Coupe. Thanks for the instructions Doug.

Good to hear.   How close are you to getting your car on the road ??   From your build thread and other posts it sound like you are getting close !!    

I finally got my car out of storage this past weekend ... now I just got to burn the full tank of fuel in it so I can officially try the MOD out myself.   

Weather for next weekend by me does not look too promising at the moment though ... Thursday-Saturday Rain / Storms !!

Doug

Share this post


Link to post
Share on other sites
3 hours ago, stangs-R-me said:

Good to hear.   How close are you to getting your car on the road ??   From your build thread and other posts it sound like you are getting close !!    

I finally got my car out of storage this past weekend ... now I just got to burn the full tank of fuel in it so I can officially try the MOD out myself.   

Weather for next weekend by me does not look too promising at the moment though ... Thursday-Saturday Rain / Storms !!

Doug

I am hoping to have it running by November this year. Money is the deciding factor. I still have to get the Fitech EFI, fuel tank w/EFI pump,  run fuel lines, install engine, install trans,  do all the electrical hook ups on the engine & trans, & add fluids. That is enough to keep me busy.

Share this post


Link to post
Share on other sites

Just a quick chime in, a user from another mustang forum turned me onto this thread and I signed up on this forum specifically to contact Doug to purchase a filler neck.  I put a 22 gallon tank out of a '70 into my '67 coupe.  I bought the conversion neck with the insert already installed and basically ready to simply install.  Night and day better!!!  The neck slid right into place at both ends and installed just as expected.  I've been to the pump twice already since receiving it on Sat afternoon and both times, I put the nozzle in, locked it in at full throttle and stood back hoping for the best and both times it clicked off as it would on any modern vehicle without a drop of gas spilled!  Just to check I pulled the trigger both times and it put maybe another 1/4 gallon and then clicked back off.  Definitely full!  Just wanted to chime in that I had zero issues purchasing from Doug and the neck seems to have solved my typical puddle under the back of my Mustang while filling at the pump issue!

 

Thanks,

Khris

Share this post


Link to post
Share on other sites

Just out of curiosity did it solve the spill-over issue too (when driving away)? I know if the pump doesn't stop soon enough when I drive away fuel actually spills out the back.

Share this post


Link to post
Share on other sites

I added a vent line (tapping into the rubber connection between the filler neck and the tank) to help vent it,  and its made filling up sooooo much better (especially in CA with those pesky pressure gas nozzle things) 

its just a bulkhead fitting to a carb hose, and a charcoal filter at the end. 

JYAFy3X.jpg?1

Share this post


Link to post
Share on other sites

I never have had an issue with mine spilling out the back when full on acceleration with my '67 coupe so I can't really comment on that but it seems like it would help.

My tank is vented from top of the tank as I have a drop in fuel pump setup for my EFI system that has a dedicated vent port on it.  Not sure if it'll flow full bore without that vent line in place or not...

Share this post


Link to post
Share on other sites

Well it took me a while, but I finally burned my full tank of gas from last fall down enough to go to the gas station and try this thing out first hand.   Certainly did not help that I had my driver's seat out for rebuilding until early May, then was out of town for 4 weekends between then and now.

So …. put unleaded nozzle in and locked it in at 2nd from max flow as I normally do on all my modern cars and stood back.  

Pumped in 13+ gallons and nozzle shut off like it does on a modern car with absolutely no drama … I.E. any splash or even the slightest amount of fuel past the insert that I could see.  

Had only driven 106 miles, so obviously was not as full on last fill up, and probably has not been for many years.   Always figured it got around 10 MPG's so it will be interesting to see what it really gets now that I've got consistent shut-off at the pump.

As much as I dreaded filling this car up (before yesterday), I can now say this has got to be one of ... if not THE MOST SATISFYING RESULT(s) of ANY MOD I've ever done to this car !!

Doug 

Share this post


Link to post
Share on other sites
On ‎6‎/‎14‎/‎2018 at 5:40 PM, lanky said:

Just out of curiosity did it solve the spill-over issue too (when driving away)? I know if the pump doesn't stop soon enough when I drive away fuel actually spills out the back.

I'm sure having the insert in there helps a bit, but having a new neck and cap is even more important.   I went one step further and tested the cap & neck for leakage with water prior to installing.   Obviously blew it out real good with compressed air afterward then let it air dry for a few days before actually installing.

As I filled it likely fuller than it had been in years, I hammered on it a bit between the gas station and home and did not see or smell any gas around or below the cap when I got back home.   So I'm really pleased with that as well.

Doug 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×