93 240sx with S13 redtop sr20det swap

[GDUBSL33P3R]

serious oil leaking from a hole (about the size of dime, tad smaller maybe) on the bottom of the head in between the timing chain tensioner and the top of the block towards the front of the motor. its on the intake side if that description doesnt cut it, lol. seems like i'm just missing a piece. no threads in the hole though. dont know what to do. thought about just fillin it with sealant, but dont wanna **** anything up. any ideas or advice would be extremely appreciated. wanna get on the road again, haha. thanks

[5upra]

doesn't sound normal...I have rebuilt mine and I don't think there should be any hole there. pic may help here. doutb you will be able to seal with sealant...wouldn't want to tap it and put metal shavings in oil...this sounds like a new head is inline.