Topic: Engine

How to Choose the Right Turbo

Article by: Author unknown Article applies to: all BMWs. I decided now would be the perfect time for everyone to learn how to properly read a Turbo Compressor map, and how to choose a proper turbo for your vehicle. Here we will show a compressor map for reference:   First […]

Bosch Injector Rebuild

Article by: Michael Oswald Article applies to: all BMW models with the low impedance Bosch injectors. Problem: After installing a Perfect Power SMT-6 piggyback computer, I wanted to install new / used Bosch 24# blue top injectors. The SMT-6 has already been set up for these injectors. So, I went […]

Fan Clutch

Article by: Johan Article applies to: all BMW models with a viscous clutch cooling fan. Problem: It’s very easy to spot a bad fan coupling. The engine temperature will rise when standing in traffic. On my 735i it went to about the 3/4 mark. Apparently the electrical fan on the […]

Fan Clutch Rehab

Article by: John Krawzcyk Article applies to: all BMW models with a viscous cooling fan clutch. These next few pages attempt to graphically demonstrate the Plumley Procedure for rehabbing Porsche 928 mechanical fan clutches. The one shown below is from my 1979 and it typical of the earlier model fan […]