another dodgy thing i've seen and done IS
On a 22r hilux motor when your pulling the head off it, there is 1 or 2, 12 - 14mm bolts that go into the front timing chain/engine cover, a mate of mine and i were replacing the ''leaking'' head gasket and re,oved the head along with this chunk of front timing chaing cover that had been siliconed back together!!!!
Called the owner of the car and said dude it's f@$ked he said just silicone it back up and i'll sell the bloody thing, so as he said we put it back together, siliconed the hell outta the the front timing chain cover threw a new head gasket into it and he sent it on it's way.
Bloody P.O.S hilux