[urq] Gas tank repair

[Chris Miller]

Pull the urq tank from the car.  The fuel line runs from the bottom driver's
side front of the tank to the small square sump.  Pull the level sender and
shine a bright flashlight down towards the sump.  There is a small slot,
probably a foot long by 1/2" wide.  You might see the sock on the end of the
pipe through the slot.  There are photos of a coupe GT tank here:
http://forums.quattroworld.com/4000/msgs/68637.phtml
My tank has deposits basically clogging up the sump area so I may have to do
a similar cut it open then braze it closed again operation.  

After cleaning and degreasing, most fire departments will use a combustible
gas meter to check to see if the tank is safe to cut and weld on.  A good
welder won't touch it until he has that paper.

Chris

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of Keith
Sent: Friday, February 22, 2013 4:38 PM
To: Chris
Cc: urq at audifans.com
Subject: Re: [urq] Gas tank repair

It should be sufficient to braze or solder a patch on a tank, shouldn't it?.

Less harsh than welding to thin metal of possibly already dubious integrity?
Regards
Keith

'87 WR

-----Original Message-----
From: Chris
Sent: Friday, February 22, 2013 9:32 PM
Cc: <urq at audifans.com>
Subject: Re: [urq] Gas tank repair

Gas fumes being sucked into a device that has a constant high voltage arc
seems like a bad idea. If you don't have access to nitrogen then fill it
with water and then empty. That will safely push out all the bad fumes. When
the water is emptied then the only thing that would enter is nice fresh air.

Then maybe use the vacuum to help dry it.

On Feb 22, 2013, at 15:06, "Patrick Carlier" <p.carlier at pandora.be> wrote:

>
> I'de prefer fuel fumes over CO :)
> CO is higly toxic , one breath could kill you .
>
> Think you mean Nitrogen gas to
> push the fuel vapour and the air out of the tank .
> That's what we used when welding diesel tanks .
>
> Another way , the poor mans way , would be to connect a vacuum cleaner 
> to the fill opening , and suck the vapours out .
> Let it run for helf an hour and it should be good .
>
> Pat
>
>
>
>
>
> ----- Original Message ----- From: "Keith" <spotatashleys at hotmail.com>
> To: "AF" <afinn1 at gmail.com>; <urq at audifans.com>
> Sent: Friday, February 22, 2013 8:39 PM
> Subject: Re: [urq] Gas tank repair
>
>
>> Andrew
>> I'm almost certain their is a mesh on the outflow pipe within the tank. 
>> The most effective repair is to remove it and then a soldered or 
>> braised patch (but fill the tank with CO or CO2 or water to purge the 
>> fuel fumes but the latter leaves a drying out problem after) . If the 
>> tank needs more than this then you are best getting a new Aluminium 
>> one made. A friend of mine did this for less than the cost of a new 
>> OEM tank (if you could find one) and also for peace of mind/longevity.
Looks good too.
>> Hope this helps.
>>
>> Regards
>> Keith
>>
>> '87 WR in cold Worcestershire (i.e too cold for me to venture in to 
>> the garage - must get a heater!)
>>
>> -----Original Message----- From: AF
>> Sent: Friday, February 22, 2013 7:32 PM
>> To: urq at audifans.com
>> Subject: [urq] Gas tank repair
>>
>> Folks can I use the better quality lining systems on my fuel tank or 
>> is there a mesh screen in the base of the urq tank that will clog 
>> when I pour in the sealant? Thanks.
>>
>> Andrew Finney
>> 1985 urq
>>
>> Sent from the road
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