More petrol tank questions

[mrcrappy]

Morning all
Does anyone know how the petrol tanks are made? I have a broken fuel return connector which i was going to replace with a silver soldered brass tail but looking at the tank i am not sure if the main body to sides aren't formed round then sealed with solder, until i clear the paint and rust off it is hard to tell but i can see no evidence of weld.
Also on the wheel side of the passenger tank there is a blocked off pipe, what is it for? The plug came off it once and fuel flowed out!

Regards
Jon

[adam quantrill]

I've seen that too - maybe for draining the tanks at a convenient point? Might be best to jack up the drivers side before you do this to get it all out.

[Wedg1e]

The tanks are resistance welded together, with a small amount of soldering just above the uppermost pipes where the welder wouldn't fit.
The pipe you mention would normally be the low-pressure return from the fuel rail, feeding warm fuel back to the furthest point from the tank outlet.

[mrcrappy]

For some reason the broken connector photo worked but not the blanked connector.
I might give it a go at silver soldering, as you say it is low pressure and also its not constantly submerged (not at todays fuel prices!)

[v8s4me]

Wedg1e said:

The tanks are resistance welded together, .....

Not necessarily. Mine is silver soldered

[Wedg1e]

v8s4me said:

Wedg1e said:

The tanks are resistance welded together, .....

Not necessarily. Mine is silver soldered

All the way around? Well, it is a TVR

[v8s4me]

Wedg1e said:

....All the way around? Well, it is a TVR

Yep.



Much better than the plastic padding the previous owner put in it. No wonder the tank was empty when I went to view it.