Pps De Travestis How To Clean Alloy Cylinder Heads ?

How to clean alloy cylinder heads ? - pps de travestis

change in the process of dismantling the engine of my car on the piston ring and grinding valves, etc. How do I clean all the hardened black dirt from inside the cap and cannons? can not be a little too aggressive on the alloy. what worked for you?

PS I do not want things mud - it is washed with de fat, but hard varnish deposits.

PPC expert on the reconstruction of the flat 602cc air-cooled engine twice the Citroen 2CV? Some suggestions welcome.