280z broken exhaust manifold studs in head

[gus280z]

So, when i bought the car 5+ years ago i noticed that there was an alarming amount of red sealant around the where the rear exhaust stud is on the head. So i figured there was funny business happening here. Well today i went to advanced and picked up a gasket and figured i could fix this problem. Pulled the manifold and found the 2 studs broken in the head, the one right bellow the thermostat 1st and the one closest to the firewall (the one all red sealed )

 

After breaking 1 extractor I had to grind the broken piece of extractor off with a carbide bit.  

the rear stud came out fine but the front one was hell

 

photo uploader

 

 

 

 

 

 

 

 

 

After all that mess i was able to get the broken studs out and retap the holes :D more tomorrow 

 

 

[yellow zee]

I just went through the same thing last month. Not fun extracting those broken studs. Nissan sell beefed up replacements to correct the issue with the first and sixth studs breakage.

[yellow zee]

Oh yeah, make sure you have the exhaust mani levelled as its most likely warped. Mine was bad.

[gus280z]

This it what it looked like after finally getting that old gasket material off and with new studs in place. 

Yellow Zee I did not check the exhaust manifold (its the stock one ) but i guess they can all warp. Fortunately there are no more leaks :D