Head Gasket Replacement DIY - Bimmerforums - The Ultimate BMW Forum

this link should tell you just about everything you need to know.....

I would also reccomend getting a bently manual and also check pelican parts for some good DIY.

getting to the headgasket should be all that hard.....but in my case i have a cracked head and 2 friend piston rings

Good luck and let me know if i can help in anyway