Re: Polish aluminum engine

Posted by Packardbarry On 2014/1/17 9:35:48

Never have found that NAIL IN THE COFFIN but i think the Crankcase and Pan Assy were painted on the outside with ALUMINUM VARNISH. Seen many a NON-Packard crankcase and pan painted on the inside. Grape Vine is its GLYPTAL - a Varnish Paint. Theres many saying its for oil flow but on the alum crankcases i think they were going for sealing off the porous castings,especially the pan which is i think where most of those drip on the floor come from on an untreated pan/pores. Never have found signs of painting on the inside of PACKARD crankcase etc so makes sense they would do it on the outside which would also give them covering of the steel nuts and valve rocker castings. ALSO have a '30s Service Letter from LINCOLN specing out the Alum Varnish that is to be painted on the outside of their engine crankcases.