bmwe21.net forums

I took my car to a rolling road last week. I noticed they had a huge manual with various E21 vacuum and carb diagrams so took the opportunity to scan a few on my phone as I was waiting - I often see people on here asking how to hook up the vac hoses properly.

I'm going back again in a few weeks so if anyone has any specific requests let me know and I will have a look for the diagram. Jeroen - if you think this is better in the tech guide section feel free to move across.

Model specifications:


Zenith 2B4:


Zenith 1B3:


Solex 4A1:


Pierburg 2BE:

Thanks, I'll move this thread to Top Tech!