Author Topic: petrol tank cleaning  (Read 167 times)

Offline RDfella

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petrol tank cleaning
« on: 20.01. 2020 12:34 »
Hi guys.
Am currently working on the petrol tank for the project ('62 GF tank I believe). Have cut out the bottom to a) remove a dent and b) create a recess for the front carburettor. Wanted to do the welding whilst it was dry and vapour-free (has been standing unused for 30 yrs). My next job is to clean the inside. Rust is very light, but it's coated with a varnish-like substance from old dried-out petrol. What have members found the best for removing this? Cellulose thinners? Drain cleaner? Seems to me something should dissolve it fairly easily.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Offline Del 60

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Re: petrol tank cleaning
« Reply #1 on: 22.01. 2020 21:19 »
I have had good results cleaning bike tanks with Apple cider vinegar, cheap to buy if brought from a horse feed outlet £12 / gallon

Offline Greybeard

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Re: petrol tank cleaning
« Reply #2 on: 23.01. 2020 09:43 »
Cider will probably remove light rust but it sounds like RDfella has a petrol based residue. I think cellulose thinners would shift it.