A gearhead friend of mine called and asked how the DeLorean was coming. I told him I blew headgaskets and a crank seal. He recommended that I check the PCV valve. Right. We know of course, that the PRV-6 doesn't use one as such. Brother Maynard, please quote from the Book of De Lorean won't you? Section D, Chapter 06:03 verses 4 a and b: ...and the Lord spake, saying "a plugged orifice in the cold start valve air tube or plugged hose that connects the oil fill cap to the air tube would cause excessive pressure build up withing the crankcase resulting in possible oil seal and/or gasket damage. Thou shalt not allow the oil fill cap to get clogged or plug it or the cold start valve air tube Lest thy blow thine engine to tiny bits". I did not understand this at the time, and while searching for vacuum leaks found that the oil fill cap was not connected to the cold start tube. I was tired and had a brain cramp thinking this could be the source of a vacuum leak and PLUGGED IT. So I blew my own engine up. I think. I was wondering WHY the crank seal would blow along with the head gasket. If anyone reading this has a different reason for why these things blew out and that I may not have been responsible drop me a line. Thanks, Rich #5335 -MD