For what it's worth . . . my VX engine has the head off currently, ready for the Coscast replacement head to go on Saturday.
Because of the engine to water pressures, the porosity issue meant that oil got into watrer, but not vice versa as a head gasket can.
I'm stuffing cylinders with rags and gaffering the entire top of the block on Friday to block the oil ways, before trimming out and then hosing out the water channels only.
As for the head, that went through my Miele dishwasher twice this week. Two tablets, at 65oC and it came out squeaky clean 😬
Just had to run two rinse cycles empty afterwards to rid a few black spots from spray arms and the bottom. Good job I'm still single at this point.
I had Googled the idea and found quite a few instances where people had done it to good effect.
As for any residual I missed and in hard to flkush pipes, then I'll fill the coling sytem up with water and antifreeze/coolant, run the car to temp, drive her a bit and then change it for fresh.
Giles
Beryl the Peril (HPC)
Edited by - gileshudson on 29 Apr 2010 13:57:54