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Jrod

Welding Small Holes

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Jrod

I went to remove the 10mm nut that holds the bracket for the brake line under the car and there was a snap, not the actual stud but it snapped free from the car.

 

weld001cm3.jpg

 

The way I was looking at this is cutting one from another car then welding a square in, Is this an issue as it's quite close to the seatbelt mounting point?

 

Also as in the picture there is a rust hole and another are where it has rusted. I've cleaned it all up and primered it for the time being as I'm not really sure what to do about it? Could I just fill the small hole with weld then use body filler on the other bit? It has eaten away a layer of metal but there is styill another one, was worried if I weld in a small plate that they will rust from the inside?

 

Also anyone got any tips on draining the fuel tank as it's half full at the moment. Don't really want to have to take it off but there ya go. :(

 

Was actually the last Job i had to do before MOT, so close yet so far.... :)

 

P.S anyone breaking a car can cut me out that stud with a square of metal say 10cmx10cm surrounding it?

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inferno

I cant see exactly where that bit is on the car... but if you cut the rusted area out and fully weld a new peice in there will be no issues for the mot. underseal both sides afterwards to ensure it doesnt rust again.

 

personally id tke the tank off if its in the way. just draining it is a nono unless u run exaust gasses through it afterwards or half fill with water, the vapour is the explosive danger, not the petrol itself.

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Jrod

Its under the rear seats.

 

I'm going to remove the tank aswell but to do so I need to drain it.

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boombang

Isn't there a drain plug at the bottom down the front of the tank?

 

Just undo that and have a bucket ready.

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mossy

Its hard to see the size of hole, but if its a clean hole ie no corrosion then it can be welded simply with a mig.

Place a plate a ally at least 5mm thick against the back of the hole, you may need a second pair of hands. Then you can weld up the hole starting from the outside in. Once hole is filled you can then clean it up with an angle grinder and paint. This method works well and you can then redrill and weld a nut on so you can reattach the bracket.

 

Hope this helps

Al.

Edited by mossy

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hengti

i did exactly the same to mine as i was dismantling it last week

 

to repair it, i'd cut a square of steel and drill a suitably sized hole in the middle of it: use a new bolt (you may as well use a fairly meaty one - no point replacing it with a weedy bolt that'll rust up and possibly snap if you have to take it apart in future); weld the bolt head to the square; weld the patch into the car.

 

if using a bigger bolt, you'd likely have to enlarge the hole in the brake hose bracket too.

 

make sure you test fit everything before welding it up to be sure there are no alignment problems.

 

then paint/waxoyl etc.

 

deffo take the tank out too!

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jackherer
Its under the rear seats.

 

I'm going to remove the tank aswell but to do so I need to drain it.

 

I dropped a 205 tank off yesterday with a load of petrol in, it didn't cause me any problems so IMO you don't need to drain it unless its very full.

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