HELP! - Leaking Fuel Tank on S1
Discussion
Hi mate.
Thats not good....You will have to drop the O/S trailing arm...Move the exhaust and possibly the prop...Although I'm not sure about the last bit but definitely all the other...
You could try Douglas valley breakers or Bell hill garage to see if they have any but they are not cheap.
You would be better off removing and taking it to someone who can weld it up...And test it.
Douglas valley
https://www.google.co.uk/url?sa=t&rct=j&q=...
Bell Hill garage
https://www.google.co.uk/url?sa=t&rct=j&q=...
Thats not good....You will have to drop the O/S trailing arm...Move the exhaust and possibly the prop...Although I'm not sure about the last bit but definitely all the other...
You could try Douglas valley breakers or Bell hill garage to see if they have any but they are not cheap.
You would be better off removing and taking it to someone who can weld it up...And test it.
Douglas valley
https://www.google.co.uk/url?sa=t&rct=j&q=...
Bell Hill garage
https://www.google.co.uk/url?sa=t&rct=j&q=...
I've had a look at the tanks (thanks!) and I don't think they are the same. Mine are held on by four brackets whereas the eBay ones look like they are held on by straps.
I thing I've no alternative but to remove the tank and have it patched. The leak is on the lower outside seam so an old fashioned brazed patch would probably do the job. it's going to be a right bu
er to get out though.
I thing I've no alternative but to remove the tank and have it patched. The leak is on the lower outside seam so an old fashioned brazed patch would probably do the job. it's going to be a right bu

Mmmm...I would of thought they would of been the same...Those ones look like the same as i had on Delilah and she was a 1982 280i...Im pretty sure the guy i bought a spare tank from was from a 350i.
If you know someone who is competent at welding it and pressure testing then it might well be cheaper just more of a right PITA.
I know that the N/S on Delilah came out with some wiggling but the drivers was a real SOB,,,Definitely had to remove the trailing arm and exhaust...
If you know someone who is competent at welding it and pressure testing then it might well be cheaper just more of a right PITA.
I know that the N/S on Delilah came out with some wiggling but the drivers was a real SOB,,,Definitely had to remove the trailing arm and exhaust...

I welded a new plate into the top face of my n/s tank after I found a pin-prick hole: the tank had been empty and venting for nearly two years by then, mind...
http://www.wedgeneering.co.uk/TVR%20390SE%20p15.ht...
http://www.wedgeneering.co.uk/TVR%20390SE%20p15.ht...
v8s4me said:
I've had a look at the tanks (thanks!) and I don't think they are the same. Mine are held on by four brackets whereas the eBay ones look like they are held on by straps.
I thing I've no alternative but to remove the tank and have it patched. The leak is on the lower outside seam so an old fashioned brazed patch would probably do the job. it's going to be a right bu
er to get out though.
HiI thing I've no alternative but to remove the tank and have it patched. The leak is on the lower outside seam so an old fashioned brazed patch would probably do the job. it's going to be a right bu

The fuel tanks are usually held in place by four straps, so I would love to see a pic of the brackets yours have.
280i and 350i tanks are basicaliy the same, if there is any differences it will be extra return pipes on the 350i, simple to deal with a piece of the correct pipe fitted and a suitable plug/bung in the open end to seal it.
Andy
These are the upper brackets....

There are two similar ones lower down. Also my tank is welded along the seam where the two panels butt together whereas the edges on the tanks on eBay are folded.

There is a slight "ding" in the edge here so I'm assuming it was dropped on its edge when the chassis was being rebuilt and this caused a small fracture in the weld. This type of seam welding along the butt joint looks very neat but it's not as robust as a folded joint.

There are two similar ones lower down. Also my tank is welded along the seam where the two panels butt together whereas the edges on the tanks on eBay are folded.

There is a slight "ding" in the edge here so I'm assuming it was dropped on its edge when the chassis was being rebuilt and this caused a small fracture in the weld. This type of seam welding along the butt joint looks very neat but it's not as robust as a folded joint.
Hi Joe
Not sure they were bracketed like that?...Might be wrong?...Might be the guy putting all back togethers way of dealing with it instead of the straps.....May of dropped it whilst in his capable hands?...I know the guy who fitted mine dropped it without telling me...Okay it was only a tiny nick on the main filler collar but bloody hell ...When you have a spare week ill tell you about the fuel leaking dramas i had because of it...Some very scary!....It was really hard to see the indentation as it was on the top of the inner collar so looking down was hard to see it...
Are your tanks angled as in the pic?
Not sure they were bracketed like that?...Might be wrong?...Might be the guy putting all back togethers way of dealing with it instead of the straps.....May of dropped it whilst in his capable hands?...I know the guy who fitted mine dropped it without telling me...Okay it was only a tiny nick on the main filler collar but bloody hell ...When you have a spare week ill tell you about the fuel leaking dramas i had because of it...Some very scary!....It was really hard to see the indentation as it was on the top of the inner collar so looking down was hard to see it...
Are your tanks angled as in the pic?
mrzigazaga said:
..Are your tanks angled as in the pic?
The brackets look "factory" to me. The back of the tank is vertical, the front is sloped to match the body moulding and and the bottom slopes down slightly towards the front. This is a picture from the original TVR parts manual.
Look closely at the rear upper edge....brackets.
Edited by v8s4me on Saturday 24th September 00:24
Again I'm going to step in and say the early Tasmins did have tanks with integral brackets.
The later tanks are an easier design to fabricate and were resistance-welded along the joints, with some finishing (brazed, I think) where the welder couldn't access (e.g. adjacent to the outlet stubs). The stubs were fixed into the tank side plates and the plates then inserted into the previously-welded 'cylinder' of the tank and resistance welded (a pair of rollers clamp the metal together and feed it as current is applied, with no filler wire needed). It leaves a distinctive 'tyre track' pattern in the weld.
If you look closely at the straps on later tanks you'll find they're galvanised, as are the tanks. Unfortunately the seam welding boils off the zinc used in galvanising and water can then get at the bare steel.
In this pic you can see the weld track and also localised soldering/brazing at the top of the tank near the outlet stub:

The later tanks are an easier design to fabricate and were resistance-welded along the joints, with some finishing (brazed, I think) where the welder couldn't access (e.g. adjacent to the outlet stubs). The stubs were fixed into the tank side plates and the plates then inserted into the previously-welded 'cylinder' of the tank and resistance welded (a pair of rollers clamp the metal together and feed it as current is applied, with no filler wire needed). It leaves a distinctive 'tyre track' pattern in the weld.
If you look closely at the straps on later tanks you'll find they're galvanised, as are the tanks. Unfortunately the seam welding boils off the zinc used in galvanising and water can then get at the bare steel.
In this pic you can see the weld track and also localised soldering/brazing at the top of the tank near the outlet stub:

Hi Joe
Thanks for the pics, well that's the first time I have seen brackets like that on the fuel tanks of a wedge. Looking at the pic you do have some form of strap or the remains off on the tank.
It looks like your tank or tanks have been played with in the past. Personally I would get a replacement and the straps are just a strip of mild steel (Unless you have stainless ones made.)
Andy
Thanks for the pics, well that's the first time I have seen brackets like that on the fuel tanks of a wedge. Looking at the pic you do have some form of strap or the remains off on the tank.
It looks like your tank or tanks have been played with in the past. Personally I would get a replacement and the straps are just a strip of mild steel (Unless you have stainless ones made.)
Andy
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