ok i just got a 1990 z32 na 2+2 and it drives fine at first as long as
you keep it moving,if you stop for too long or turn the car off and
try to drive it again the clutch starts to grab less and less and then
not at all and this is accompanied by a hot smell like something
burning  but no smoke anywhere.
allso after you drive it once you have to wait like one or 2 days or
else it wont grab at all.
i wondered if it might be the mainseal leaking oil on to the clutch
because i did notice a couple drops of oil under the car but not alot
so i dunno for sure.
what could this be?