Helmut: 1983 BMW 320i

Poor m42 refuses to die. Thrust bearing is so bad that the flywheel started to eat into the oil pan. After it ate some of the oil pan material it stopped making weird noises and now it drives great.

There are some reports on the internets that stock unopened engines survived 20+ psi from some mid sized turbos and pushing 350-400 whp quite reliably.

I guess the engine is due for rebuild anyway.

I cranked the boost to 20ish and drove it for a bit. It pulls significantly better than on the lousy 12psi that i used to run. 3rd gear after 5k rpm is getting a bit scary. Also i spiked to 25ish and broke loose 3rd gear before i hit boost cut 😂

Do i crank the boost to 25 and find the limit of the stock head bolts or should i let it live for the rest of the season?