Hi All,
The cylinder head was resurfaced and the block decked at a full rebuild in 2019. Since then, the cylinder head has been removed twice for minor to moderate external oil and coolant leakage issues.
At the rebuild, I used a Elring head gasket which was then replaced with an OEM Volvo set. The last time I utilized copper spray to seal the deal. Both times new TTY head bolts were installed with the proper torque sequence.
Seems now I have a minor oil leak on the low rear corner of the cylinder head (#4 cylinder where they always seen to leak…), enough that after 100 miles of driving, motor oil drips off the lowest point on the bell housing. The turbulence while driving then throws the oil rearward where it coats the transmission pan and crossmember.
I’d like to get this B230FT sealed up so well I could park it on my living room carpet (Wife permitting).
Question is: Should I be looking at a different brand head gasket than those I’ve used? Perhaps something with more steel layers?
I really thought the Permatex Copper Spray would seal it up tight.
Thoughts and comments please.
Thanks everyone.

do a retorque and cross your fingers.

mercedes has the same issue with the 103/104 straight sixes. the block takes a dive in that corner and is lower than the rest of the block. take a machinst's straight edge and go diagonally from the drivers front to the pass side rear of the block to check. not having done a b21/230 in forever-nor seen 1 in the past 10 years-i'd be suprised THAT is your problem. everything else you did is fine.