rite i have recently done the head gasket on my c20xe corsa, reason for that was it was reeking smoke at high rev's, i wasnt sure if the gasket had gone or not so had the head skimed and valve stem oil seals replaced,the valve seats seemed ok so never got re ground/cut, after re-fitting the head, i warmed the engine upt temp then let it sit for a hour or so then took it out for a run,everything was ok,a day later after changing the fuel pump i was out for a run and came across my m8s evo! so i passed him cuming of the dueller and as we went bk up just before i put it into 3rd she belched out a reek of smoke so got the car home it had used a tad of water and she was miss firing and eventualy wouldnt start,
i am having the head presure tested to eliminate any chance of crack's etc..
could worn valve guids cause smoking at high rev's???
done comp test and she was showing between 8 and 8 and a 1/2, is that ok??
any ideas as to why or what could have cosd it to have a re-ocuring problem???
burning oil under high load usually indicates botom end like rings / crank
for stem seals all it needs to do is idle and then when u rev it will blow out oil
i would check the coolant pressure after warming up - does it blow more oil when coolant system is pressurised !
i blew a head gasket on my nova gte and it did not lose oil or water, coolant system got very pressurised and the top hose expanded, started to blow oil under pressure, then ran oki once pressure released
check the usual parts like gunk in head and underneath cam cover, gunk in coolant tank, water on dispstick
your results are a bit low - should be around 12 - 13 bar
you using new bolts ?, are the bolts torquing correctly or bottoming out ?, is there any damage to cylinder walls ?