In the process of removing my engine I lost one of my exhaust studs. Are they 10x1.25 thread? None of the other ones want to come out of the block, and I don't want to risk stripping one just so I can find out the size.

 

Thanks!

Yes it is M10X1.25.By the way Heli-coils work great to repair striped threads.

If you strip one you can also tap the block with a 7/16th's and use a 7/16ths stud for a replacement. I just did it to my EA82 a couple weeks ago and worked like a charm and simple. Saved me the $ on helicoil set and I already had the tap. Just my 2 cents