E30 swapped m50b25tu Overheating!!!

[E30Mckay]

Hello I just purchased a M50b25tu (with Vanos) swapped e30. Engine has 120,000 miles and has been recently overheating. Usually overheats when car is idling for more than 4 or 5 minutes. I currently have a small pin hole leak in my radiator and oil is leaking into the 6th cylinder. I just purchased a new radiator and valve cover gasket/spark plug. Hopefully those parts will fix this problem if not does any one have suggestions as to why the engine is overheating?
Thanks,
Mckay

[Appleseason]

What kind of fan setup do you have for the radiator. Just stock on the engine, or an aux fan?

[E30Mckay]

Yeah its just stock for the M50.

[e30davie]

If your radiator cant hold pressure due to that hole that wont help.

I'd fix known issues, then re-evaluate problem if it still persists.

[MrBurgundy]

Air in the system, stuck thermostat, shitty fan, blown head gasket, shitty fan switch, or you have a shit water pump.