captain_anchovy;102824 wroteDunno if its my imagination but i think there are quite a few cars for sale cheap with "needs new head gasket".
Doubt that's new cars though.
In that thinking, every time you have the head off, you would essentially need to pretension no?
Which would mean new cam/rocker cover gaskets etc every time.
And if you're a whiteblock owner that's quite frequently. ;p