SOHC.co.uk Forums > CB350/400
Fuel Tank Cleaning
Northy:
Spirit of Salts or brick acid , I use SOS cleans it so well you need to add in caustic soda to neutralise the acid or it gets covered in surface rust instantly . Once the caustic is out then rinse with water , add in petrol/ oil mix. Best bit its quick , couple of hours tops and cheap £3 for 500ml is more than enough for one tank.
kevski:
--- Quote from: Northy on March 22, 2019, 10:04:42 PM ---Spirit of Salts or brick acid , I use SOS cleans it so well you need to add in caustic soda to neutralise the acid or it gets covered in surface rust instantly . Once the caustic is out then rinse with water , add in petrol/ oil mix. Best bit its quick , couple of hours tops and cheap £3 for 500ml is more than enough for one tank.
--- End quote ---
By applying caustic to the acids you make it harder to rinse out quickly, D.I water is whats needed and plenty of it, if we had added caustic at this stage of the process on our plating line we would have so much contamination we would of failed every time.
Rob62:
--- Quote from: kevski on March 15, 2019, 07:02:06 AM ---The tank has to be the sacrificial anode, otherwise you are plating the rubbish to the tank.
--- End quote ---
http://www.secondchancegarage.com/public4/gas-tank-cleaning-1.cfm
mattsz:
Herein lies the problem for us newbies who need to de-rust a tank for the first time - so much conflicting info everywhere... :-\
kevski:
--- Quote from: mattsz on March 24, 2019, 12:38:59 AM ---Herein lies the problem for us newbies who need to de-rust a tank for the first time - so much conflicting info everywhere... :-\
--- End quote ---
No false info here, i am a former plater and metal chemist, the best way to do this at home is brick cleaner and a handful of pea shingle, seal tank, agitate, drain and rinse with loads of D.I water, the DI water is important, then dry quickly and swill with WD 40, i buy it in 5litre cans, no twatting around with aerosol cans, trying electrolysis is hit and miss at home due to lack of the correct equipment and knowledge.
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