Hello,

My MK2F gas tank is leaky and I'm in need for a fix. I found a parts car that I want several things from, but it's carbed. Is there any difference, as the online shops im looking at are offering two different options? And if there are, is it possible to overcome them?

carb cars have 2 pipes at the front lower edge , 2f ones do not

 

you could use a small length of hose to join them up and use that tank , or theyre not super expensive for a new tank from ebay

see the 2 small pipes

 

1 hour ago, steveo3002 said:

carb cars have 2 pipes at the front lower edge , 2f ones do not

 

you could use a small length of hose to join them up and use that tank , or theyre not super expensive for a new tank from ebay

Ah, so carbed ones have the extra piping, good to know. Im from northern / eastern europe, so ebay is not really an option as the shipping gets unreasonable and a new tank would cost about 120€ shipped locally (i imagine that those cheapo brand ones wouldnt line up at all), while I can get a whole scrapper (no paperwork on it) for 100€ excluding road expenses, that's why I was asking as it seems to be a great deal (is a twospoke wolfsburg wheel any type of rare?). I would remove the tank, probably clean it up before install, even weld if needed.

Edited 13 December, 20196 yr by GatisGirdenis

Take Great Care.

Petrol tanks and welding are a very dangerous mix!!!

The recommended method is to run low pressure steam through the tank for 24 hours prior to welding.

I know that some people fill the tank with water, leaving just the area to be welded without water, but even so, you could still end up with a volume of petrol vapour that is going to come into contact with the

red hot metal.

 

Petrol vapour + red hot metal = BOMB..

 

Think very carefully before you proceed.

 

Regards

7 hours ago, caretakerplus said:

Take Great Care.

Petrol tanks and welding are a very dangerous mix!!!

The recommended method is to run low pressure steam through the tank for 24 hours prior to welding.

I know that some people fill the tank with water, leaving just the area to be welded without water, but even so, you could still end up with a volume of petrol vapour that is going to come into contact with the

red hot metal.

 

Petrol vapour + red hot metal = BOMB..

 

Think very carefully before you proceed.

 

Regards

Im aware, but thanks, there are a few methods of cleaning out the tank, it would take a few days to do on my current one and as my mk2f is a daily for me, it is nice that now i already have the second tank, where I can take it slow and careful

https://www.ebay.co.uk/itm/PETROL-FUEL-TANK-VW-DERBY-09-84-12-84-POLO-86C-1-0-1-3-84-94/371142100118?hash=item5669cb0496:g:mBoAAOSwlnVd8-a7&shqty=1&isGTR=1#shpCntId

 

maybe its wrong but says £6 shipping to latvia 

12 hours ago, steveo3002 said:

https://www.ebay.co.uk/itm/PETROL-FUEL-TANK-VW-DERBY-09-84-12-84-POLO-86C-1-0-1-3-84-94/371142100118?hash=item5669cb0496:g:mBoAAOSwlnVd8-a7&shqty=1&isGTR=1#shpCntId

 

maybe its wrong but says £6 shipping to latvia 

Weird, but it does (£7, actually), cant imagine how they would ship it as the local online parts store only delivers to door (because of the size) and that costs about 10-20€. Do these tanks have fitment issues?

 

I bought the scrapper already anyways, gonna remove the tank over Christmas holidays, I think, and inspect it.

Any fluid suggestions for leak test? Will water be enough?

The fitment isn't perfect on the pattern tanks, but they tend to go on if you apply the right amount of expletives. I always end up bending the filler neck into the right place by sliding a broom handle down it. 

@YetiHow do you do the broom handle trick if there's a trap door for unleaded nozzle in the filler neck?

Ah,  maybe my new unfitted spare tank is an unsuitable for carb tank without the 2 lower pipes... suppose I'd better unwrap it.

 

 

For my car I used this

https://www.carbuilder.com/uk/gates-90-degree-45mm-id-fuel-fill-hose

for filler neck with double-wire clips.

Gates part number 24716.

https://www.gates.com/us/en/fluid-power/engine-hose/fuel-fill-hose/angled-fuel-fill-hose/p/4278-000000-000000/v/4278-06999

 

8 hours ago, GatisGirdenis said:

Any fluid suggestions for leak test? Will water be enough

 

Isopropyl alcohol? It will clean, pour out, then evaporate.

You could use water if you can thoroughly dry the tank, (for example in a warm place for a long time),  but it is hard to get the last liquid out because of the way the tubes join.

 

Water also helps cause phase separation in fuel containing ethanol, sinks to bottom and then speeds rust.

So it would not be my choice, though rain/road-spray may have got in through the holes that petrol dripped out of in filler neck.

And the isopropyl alcohol at max 3%? in petrol will mix with such water contamination in fuel and burn. 

 

 

 

 

Edited 17 December, 20196 yr by dvderlm

i find theyre alright for the money ...might need a bend depending on if the postman dropped it , but good value fix for a rusty tank if you paint it first 

I ordered a mK2 one this morning, email within couple of hours to say dispatched, these guys don't hang around.

Tank looks the same as the one Heritage list, except works out almost half the price once you take postage into account.

Mine is getting some metalwork done at the moment so get it fitted well by a pro