Our customer Leo has installed our flywheel article 639 for the M52/M54 engine on his BMW E46 330i Touring.

Many people know it.....

You drive a somewhat older model of the BMW 3 Series, whether in everyday life, on nice sunny days or perhaps even in motorsport.

In our case, it's an E46 330i Touring that rolled off the production line in 2001. 

Of course, after 20-30 years, minor repairs here and there are inevitable and even the otherwise quite robust engines of the fun factor class M52/M54 have their aches and pains from time to time.

The big enemies are, as almost always, the odometer, corrosion and the ravages of time. This means that at some point, components that have already been replaced for the third time in another vehicle's life will be worn out. 

One example of this is the clutch. 200,000 kilometres and more down, it slips, it vibrates when starting off, gears are difficult or impossible to engage, the only thing that moves when loading up is the rev counter needle. The day is over. 

 "So what, we'll just replace it", some people would shout in between. Basically, it's not a worrying repair for this model, a mid-range car with a straight-six engine and rear-wheel drive.

At this point, motorsport enthusiasts, but also the more sporty Sunday rider, often ask themselves the question:

"Should I convert to a single mass flywheel right now?"

At least it won't break and it increases the driving pleasure and the responsiveness of the engine many times over due to the lower weight.  

So far, correct, but now comes the somewhat more complex part of this project.

The M52/M54 engine range was (unfortunately) never supplied with an EMS ex works. This means that there are few alternatives to high-quality components, and the risk that original clutch packs will no longer fit remains.

I faced exactly the same problem. Several times.

Now there is a flywheel from Epytec. I read the description and asked customer service whether the original clutch can still be used. The answer, "...if it doesn't fit and there are no installation marks (driving marks), I can send it back."

The price was very fair compared to other manufacturers (where the original clutch, which is readily available here, could not be used).

Ordered. Earliest possible delivery date - 30.08.23 *grumble* 08.07.23 - flywheel arrives. *joy* *unpacking*

At approx. 6kg, the EMS is about 8kg lighter than the OE DMF. The workmanship leaves nothing to be desired.

Schraubensatz für Schwungrad und Druckplatte liegen mit bei (Festigkeitsangabe 12.9).

The sensation of the day and ultimately the reason for writing this report:

The original clutch fits! *HEUREKA*

The fitting bolts of the EMS correspond to the bolt circle of the original pressure plate.

This achievement alone seems to be an insurmountable obstacle for other manufacturers