550 k3 tank

[MikeM]

going to post up some photos of the  tank, very original tank but sat untouched for at least 2o years if not more

all there ,would like to keep original paint , has a few hairline cracks but overall not bad looking

So petrol inside what problems am i likely to come up against and cures

ie tank and petrol tap ?

thanks

[Trigger]

It is good to find out that you have petrol still inside the tank. It stops the rust build up. When you are ready to fit the tank, empty it out and remove the fuel tap. The tap will only need some WD40 and the o'rings replaced, Hopefully. Check what condition the petrol is in, look for any bits of rust.
If the tank shows signs of surface rust. This can be cleaned very easy. 

[MikeM]

sounds hopeful, i was worried the petrol would do same sort of damage its done to carbs, not sure on  inside yet but will post up some pics for you to see

thanks

[Trigger]

We Love pictures. 

[MikeM]

[Trigger]

Not a bad tank, will need a respray and you have a very good firm in your area. What does the inside look like ?.

[mickwinf]

its good to have the fuel flap lock, even though any key fits they are often missing.

[MikeM]

not had a look yet inside... whos this firm for painting then

[Trigger]

It is a company that has been going since 1919 in Northampton. Douglas Motor Services.

[MikeM]

cant say I have heard of them but I am about 30 miles away.....

In two minds about painting would like to keep one item original state put back on bike

I may polish and wax after I have a look in daylight inside the tank... no idea what its like on the inside

more pics tomorrow 

[LesterPiglet]

its good to have the fuel flap lock, even though any key fits they are often missing.

It's not a lock as such. Anything that fits the slot and turns will open it.

[MikeM]

bit like my old nova 2 pence piece would open the door 

[SteveD CB500K0]

... and the key from my 500/4 (or any key actually) would open the drivers door of my first Ford Escort...

[totty]

I once got in what I thought was my nova and wondered why the seat was in an odd position and something was hanging from the rear view mirror - my car was 3 or 4 spaces further down the row.

[MikeM]

so tank, any cheap n cheerful remedies for cleaning inside, from what I see just very mild surface rust, no holes found