Article by: Winston Fong Article applies to: All models with the M30 engine. Unbolt the oil filter lid. Editor’s Note: The early M30 engines had a different oil filter canister than what is shown here. Location of M20 filter canister is different from the M30 as well (located near the […]

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 […]

Article by: IceHaus Dave Applies to: All models with the M30 engine. Yesterday I was working with a good friend to get his Dad’s 5er in shape. One of the required maintenance items was a valve adjustment. So, I removed the valve cover and surprise! The oil sprayer bar was […]

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 […]

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 […]

Article by: RAkhmedov Applies to: All models with the M30 straight six engine. Lubrication is critical for any engine. Good condition of the oil pump is essential for provision of adequate lubrication. Negligence of timely oil changes affects oil pump as well as the rest of the system resulting in […]