Ryan
> >Does anyone have any experience with cleaning metal using muratic acid?I
This can be frought with unseen risks.
> >up a solution of acid and putting the whole crank into it for a period of
Most definetly not! Any load or stress bearing part should go nowhere
near Muriatic (Hydroclauric) Acid. What happens is that the breakdown
of the acid results in hydrogen seeping into the part. This causes
"Hydrogen embrittlement" which cannot be seen and is hard to test for
other than sacrificial breakage testing. You would be happily driving
along, say up a hill one day and "whamo" broken crank.
> I'd be concerned about the acid etching the machined surfaces of the
> bearing points myself. Protecting the journal points would be
> important. Have you checked with a machine shop about this. It may be
> a good idea to get the crank magnafluxed while you have it out of the
> engine.
Yes, talk to someone who is knowledgable in these things don't
"wing it" yourself and mess around with unknown technology.
I have discovered to my cost that even something as supposedly kind as
Phosphoric Acid can do destructive things to steels containing other
than normal quanitities of carbon eg, spring steels.
-- Regards Doug++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Armoured Vehicles Collector _______ _/_(_o_)_\_ ____ _/|___|_|___|\_ /____\ / [___] [___] \ Douglas Greville _/[o]___\_ /\_ [o] [o] _/\ Broken Hill __/=_|____|_=\__ |w||___________||w| N.S.W. /__\__________/__\ |w|\u u/|w| Australia |w| \ / |w| |w| \_________/ |w| |w|$ \______/ $|w| [w] [w] [w] [w] M8 Ferret dgrev@ruralnet.net.au
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