Hey Mike Mystery solved of no start after head replacement!
Posted: Fri Aug 17, 2012 1:37 pm
When I put the 85 M30 head into my 76 530i I also added the longer intake runners. Couldnt get the car to run and I was sure I had everything set up right. Turns out I had installed the new intake runner gaskets on the last three runners on top of the old gaskets! D'OH.This was causing enough of a vacuum leak to prevent me from fine tuning the timing and idle. Running good now. 