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threaded brass circle on my 1927 tank
#1
Dear Friends:  I am restoring a 1927 Austin 7 (the one with the gas tank behind the dash).   I need the threaded brass circle that fits on the top of the gas tank spout.  I did order a new gas cap from David Claiborne but it won't fit on the tank because of distoration and general abuse of the threaded brass ring on the top of the gas tank spout.  

Cant this threaded brass ring be purchased somewhere in the United Kingdom?  The specialists here are stumped by the thread pattern and think it might be of British pipe origin.  Help!  Pete Kneedler
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#2
Not sure if theses are interchageable with  the tank (my 1929  has a bayonet fitting) but might fit [Only registered and activated users can see the links Click here to register]

Later RM/RN tanks have a screw filler - might fit?
Rick

In deepest Norfolk
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#3
The simple answer is to make a new neck with the around same diameter but with a suitable American thread, braze it into the tank (usual precautions) - and then machine up a cap to fit.
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#4
Why not machine it to the same thread as original Tony? Any good turner can measure the tpi and diameter to achieve that.
Black Art Enthusiast 
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#5
If you have the threaded cap, a competent machinist will be able to determine the thread size and machine a new threaded section to fit (whilst taking the obvious precautions!)to the tank.

I’ve just had to do this with my Delage- had the cap, but not the thread to screw it on to so had a new piece turned up...and then had to make the rest of the tank for that to fit to!!
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#6
Must be someone here who knows what the original cap thread was surely?
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#7
(09-11-2019, 08:40 AM)Ian Williams Wrote: [Only registered and activated users can see the links Click here to register] that should give all the necessary tolerances, etc.?
I've no idea if the diameter is a "standard" or something made as a one-off by Austin - here you can see why it might be [Only registered and activated users can see the links Click here to register]
A modern replacement for the Zeus book is the [Only registered and activated users can see the links Click here to register] for the iPhone, though I've not tried that yet, it probably doesn't have [Only registered and activated users can see the links Click here to register] dimensions - and would hardly be as handy in the workshop. I wonder if [Only registered and activated users can see the links Click here to register]might help - or even [Only registered and activated users can see the links Click here to register] as a temporary fitting - or scroll down this page for[Only registered and activated users can see the links Click here to register]
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#8
hi 
Yes we can supply a threaded ring to fit your cap tel 01202  625242 and we will sort it out Austin reproduction parts 
              willie
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#9
Hi, Willie: How much will a new threaded ring to fit my gas cap cost? Pete

Hi, Willie: How much will a new threaded ring cost (for my new gas cap)?
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#10
Hi Pete,

In case you're not familiar with his company, here's a link to Willie McKenzie's website 'Austin Reproduction Parts Ltd' - his email address is at the top of the home page - cheaper than phoning him from the States !

[Only registered and activated users can see the links Click here to register]
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