saab 93 vector sport 2ltr turbo clouds of blue smoke

[scott9951]

right my mates got a 2003 saab 93 vector sport 2 ltr turbo.
he's a nice guy 2 nice infact. he lent his nephew the car for about a year.
1 day he gets a call saying the car is smoking.
picks the car up smoking was an understatement.
long story short.
cars covered about 50k
blue smoke bellowing out & pretty much 0 oil in car.
did a compression test wet & dry pretty much all the same.
tried a new turbo hoping that wud be ok.
smoke still billowing & wudnt clear.
not step was rebuilding the engine.
complete rebuild top & bottom.
bores etc had no marks, crank was perfect
so all shells etc renewed
turbo rechecked by place of purchase.

now car is back together and still smoking badly.

on startup it throws clouds of blue smoke out, same as when the turbo seals are shot.
after around 5 mins of holding revs at around 2k it clears.
car drives perfect boost's as it should sounds perfect.
you can drive around no smoke then stop at lights & huge clouds of blue smoke again.
once u start driving smoke will clear altho not everytime.
on boost no smoke at all.
coming off boost no smoke at all.
turn engine off restart & huge clouds of smoke again.
half the symptoms sound like valve seals and the other half like turbo seals.
also the car is eating oil big time.
any ideas?
sorry about the essay