BMW M52-S52 Engine Repair Instruction

Repair manual for BMW 1998 M52/S52/M52TU. These are 6-cylinder engines of 2.5, 2.8 and 3.2 liters. These motors are driven by a distribution chain. They have double overhead camshafts (DOHC). The distribution is responsible for driving the intake camshaft, and it drives the exhaust camshaft through a secondary circuit. The operating order of the cylinders is 1-5-3-6-2-4.

1998 Bmw 323i Repair Manual M52-S52 Pictures of repair procedures and detailed instructions for the mechanics of the engines built into the vehicle. In addition, you will find manufacturer data and specifications for more precise repairs.

  • Brand: BMW 323i E36, BMW 323i E46, BMW 523i E39, BMW Z3,
  • Engine: M52/S52 M52B25 / M52TUB25
  • Fuel: Gasoline
  • Volume: 2.5 l 2.8 l 3.2 l
  • The operating order of the cylinders is: 1-5-3-6-2-4.
  • Years of production: 1995-2001
  • Cylinder block material: aluminum
  • Compression ratio: 10.5
  • Engine weight, kg: ~165
  • Engine oil: 0W-30, 0W-40, 5W-30, 5W-40, 10W-40,
  • How much oil is in the engine, l 6.5

1. M52B25 (1995 - 1999) - base engine. Compression ratio 10.5, power 170 hp. at 5500 rpm, torque 245 Nm at 3950 rpm.

2. M52TUB25 (1998 - 2001 onwards) - the VANOS variable valve timing system was modified and received a second exhaust phase shifter and became known as Double-VANOS. Cast iron liners appeared in the cylinder block, the connecting rod and piston group was changed, and different camshafts were installed. Compression ratio 10.5, power 170 hp. at 5500 rpm, torque 245 Nm at 3500 rpm.

Download free repair manual for BMW  M52-S52 M54/M56

Bmw 323i 1998 M52-S52 Engine Repair Instructions Download
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Contents of this mechanical manual for BMW 2.5L-2.8L-3.2L.

BMW auto mechanics manuals provide all the information on adjustment and repair of engines belonging to this group. In some cases, the manual provides diagnostic assistance using a troubleshooting table.


These BMW Engine Mechanical Manuals contain technical maintenance and repair information for each model listed on this page. Each car has a specific engine model. Although the same type of engine can be found in different BMW models.

To use this manual correctly, it is recommended that you read each part of it carefully. The repair manual is very complete and contains the specifications provided by the vehicle manufacturer. Failure to read this manual before performing a repair procedure may result in an error that may cause engine problems or even serious damage, resulting in high repair costs.

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