problem with a 240sx/header leaking

[Rafi_Boi]

Alright, so i had a question about a car i found for sale on craigslist. I wont go to much into details but it is a 1990 240sx hatchback with a 1996 s14 ka24de motor. Pretty clean inside and out, only problem was i was told a bolt broke on the head which causes the header to leak. I dont know much about this part of the car, still in the process of learning but is this a big problem. I did some research and couldnt find anything related to this. I did however find something about a stud being broken on the head. Not sure if thats the same thing or not. Is this an expensive fix, time consuming, maybe a do it yourself job? Please let me know
Thanks for your time.

[zerepdivad]

I had this issue on my old SOHC 240. One of the studs broke off taking the old header off. I just bolted the new one on with a new gasket and mine did not leak oddly enough. You may be able to do the same, they might have been cheap and re-used the exhaust manifold gasket. If you do that and it still leaks, best bet is to get an extractor and try and get the stud out to replace it.

[Warren39]

It could be the stud, put also the heater core. To replace the heater core is a big job on most cars, but I don't know on your 240sx