E36 M3 3.0 S50 B30 Vanos Repair

E36 M3 3.0 S50 B30 Vanos Repair

E36 M3 Single Vanos

The Euro 3.0 M3 Vanos has a bigger reputation than the 3.2 Evo unit. However a bill for £2k plus is expected when a new unit is required. We have rebuilt and fitted a number of E36 M3 Signle Vanos units with excellent results.
  • A failing M3 Vanos can cause a rough idle and lack of power throughout the rev range.
  • The 'growling' noise is not always a sign of failure, however it’s not a sound a high-performance engine should make. This noise will come back without changing several key parts, and custom machine work. Not just a seal kit.
  • Once a Mr Vanos unit has been fitted, we fully expect it to last the life of the car.

The Vanos unit on the E36 M3 3.0 S50 is far less prone to any problems It is not immune though. The most common cause of problems is with the piston seals breaking up. Fixing this is all part of our reconditioning service.

Symptoms include rough idle, the infamous 'growling' noise and power loss below 4000rpm. This wont always appear on diagnostics as the Vanos has no direct electrical connection to the cars ECU.

BMW E36 M3 Single Vanos

Common Problems:

  • 1993 – 1995 Model
  • Power - 286 BHP
  • Piston Seal Failure
  • Intake Gear ‘Growling’
  • Solenoid / Seals Failure
  • Solenoid Cover Bolts Shearing

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What do we do??

The M3 Vanos is completely stripped down and cleaned thoroughly. The oil pump is rebuilt and all of the internal composite piston seals are replaced. Both solenoids are tested and then it is rebuilt using Viton O-rings and High Tensile Bolts.

The gears are modified to address the rattling.

We will sign off the unit as complete following a bench test of 1hour at 150psi.

E36 M3 Single Vanos
E36 M3 Single Vanos

Supply and Fit

We can either, recondition your unit after you have sent it to us, or supply and fit a reconditioned unit at your address.

This can be completed in one day and we are available 7 days a week for this service.

Mr Vanos offer valve clearance checks while your car is being repaired.

This will include the following:

  • Full Vanos test removal
  • New valve cover gaskets
  • Full Vanos and road testing after fitting
  • Fit Recon Vanos
  • New bolts and seals for Vanos to cylinder head
  • Cam timing reset

Special Offer

With every M3 Evolution Vanos fitted at our workshop you have the option for a half price Oil Service


If your Vanos is not serviceable there will be a surcharge payable. Any further Solenoids are also chargeable per pair.


If you would like to make an enquiry or require further information please contact us.