Head Stud Help

[mikeroy420]

I am reassembling my sr20 and can't seem to get three of my head studs to bottom out. Two of them go almost the whole way in and the third only goes in about four turns. I have done this with my fingers and don't think I have cross threaded them because I can remove them, but if I have, any suggestions on how to fix this would be helpful.

Thanks

[Sileighty_85]

the block threads are dirty probably need tho chase them with a Tap to clean them out

[mikeroy420]

I blasted them with a whole can of parts cleaner. I read that your not suppose to use a tap, is this true? Does anyone know the thread pitch, so I can get a thread chaser?

So if the threads are fubar, what's has to be done to fix it, perma-coil?

[mikeroy420]

the block threads are dirty probably need tho chase them with a Tap to clean them out

You were correct sir. Thank you for your help.