The weak spot of an engine is pistons. Their quality and reliability
are one big headache of every car mechanic. People owning motorcycles made
in Russia (“sovok” goods) are casting covetous glances at imported
vehicles. But at present the cause for envy exists no more: the medicine
against engines’ mortal disease called wear is already found by
specialists in tribology. They offered the method to minimize effect of
friction available for everybody: to apply “slippery” score-preventive
coatings on a friction pair. It remains only to select the most
appropriate substance.
Achievements of the science of friction – tribology – allow driving
back vicious wear of engine parts. Solid lubricants take up the
struggle.
We have compared two solid piston
lubricants: the new preparation “MC-2000” developed by the Russian company
VMPAUTO, Saint-Petersburg, and the special coating Molykote D-10 of the
company Dow Corning, Germany.
Summoned to the ring are …
Molykote is a dry score-preventive coating, which “shields” friction
surfaces by means of graphitization of metal. The agent shall
be applied by spraying to the degreased surface of the piston (skirt)
heated to the temperature 30 to 40°C. The layer shall then be dried up
during 2 hours at the temperature 160 – 180°C.