Indeed, oiling the bolts as with any lubrication it is not meant to drown the poor bolts, just to get lubrication all over the bolt threads, sometimes wiping excessive oil lightly with paper is good. WD40 is not proper oil for lubrication there, motor oil should be used.volvodspec wrote:only a really; really tiny ammount of oil or you get a wrong setting too.
holes aren't all the way through the block so oil can seal the space under it and you'll create a sort of hydrau-lock when torquing the bolts.
if the head goes off to be skimmed, i'd do a pressurisationtest first; a crack in the head is a possibility, especcially with the condition the head was in in the first place.
Of course holes should be cleared before adding bolts, if there is coolant at bottom of hole, that too could cause some problems when tightening bolts, some things that for me at least are difficult to remember while doing the work, but that is probably because I do so little such stuff so I prefer to put things on list and check that I did remember to do all