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1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1970 Mustang => Topic started by: RocketScientist on November 10, 2019, 09:57:52 PM

Title: Spring in 70 emissions gas filler neck
Post by: RocketScientist on November 10, 2019, 09:57:52 PM
My emissions gas filler neck has a giant spring in it and it runs the whole internal length of the neck and spirals to a point at the opening inside the gas tank. To me it looks to be an anti-splash device to reduce the gas from splashing back out of the neck. I have never seen it in pics of filler necks and I was wondering if it was meant to be an original part.
Brad
Title: Re: Spring in 70 emissions gas filler neck
Post by: J_Speegle on November 10, 2019, 11:12:16 PM
Not certain if it was original but doubt it. Instead these were very popular to keep people from siphoning fuel during the "Gas Shortage years.

Just have to use a small hose or push it into the tank  ::)  I under stand if your doing that sort of thing though it can get stuck (outer ring of the spring and the edge of the gas tank fuller neck) I understand 

Might be one of these stretched out but will look through pictures to see if I can find anything there showing one
Title: Re: Spring in 70 emissions gas filler neck
Post by: Bob Gaines on November 11, 2019, 01:02:11 AM
Not certain if it was original but doubt it. Instead these were very popular to keep people from siphoning fuel during the "Gas Shortage years.

Just have to use a small hose or push it into the tank  ::)  I under stand if your doing that sort of thing though it can get stuck (outer ring of the spring and the edge of the gas tank fuller neck) I understand 

Might be one of these stretched out but will look through pictures to see if I can find anything there showing one
+1
Title: Re: Spring in 70 emissions gas filler neck
Post by: bgp429 on November 11, 2019, 11:44:41 AM
Just looked at my 70 California emissions Boss with a borescope. Nothing in the filler neck.
Title: Re: Spring in 70 emissions gas filler neck
Post by: RocketScientist on November 11, 2019, 08:21:24 PM
Thanks everyone and i'll remove it and put it on the shelf and it can be an automotive curiosity! ;D
Title: Check out the Dec 2019 Mustang Monthly
Post by: ExportMach on November 13, 2019, 01:23:26 PM
There is a lengthy article by Mr Anghel with loads of pictures about the 1970 CA emissions system !!
Title: Re: Spring in 70 emissions gas filler neck
Post by: RocketScientist on November 13, 2019, 08:23:20 PM
That's what got me thinking that something wasn't right.  It seems my car has not enough of the right parts and too much of the wrong parts. ;D ;D