[s-cars] A4 head rebuild, Part 3

[Igor Kessel]

Kirby Smith wrote:
>
> One note: The proper way of cleaning Al heads is not with a base, but
> with Permatex Cold Parts cleaner: the active ingredient of which is
> chrysilic [Bob - help me with the spelling here] acid.  This acid has
> the property of eating carbon compounds, and has little effect on metal,
> so long as the metal is fully covered with it.  Otherwise, there is some
> staining at the acid/oil interface.

Kirby,
I never heard about that acid. That's very interesting.

BTW, if I had a standard parts cleaner with a closed cycle, even the
smll one, the life would be much easier. I will eventuall get one, but
for the time being I have to resort to this stone age technique.

--
Igor Kessel
two turbo quattros