m30b34

Here it is. Ready to install M30 B34 complete with everything needed. Clean motor with harness in good condition. Removed from a 1985 635csi. Included are pics of the motor with compression values per cylinder. I have a video of cranking to validate. Compression is a consistent 165/170psi per...

Hi all! I transplanted a M30b34 Ser#5550551 into a 1973 e9 CSA #2232522 and have not been able to get it to idle. It starts on the cold start valve OK, then will only run above 1300rpm with throttle partially open. It will only run briefly on the idle circuit between 750 and 900 rpm when...