Notice engine swaps and then there are engine swaps. Michael Tung has been documenting an example of the latter on his YouTube channel TungTied: a Datsun 280Z with a Mercedes-Benz M120 V12. It just reached an important milestone that you’ll seek to hear.
The swap was initially done about six years ago for a hill climb, but the car just recently got equal-length headers that make it sound like a supercar. That’s a fulfillment of this engine’s potential, as the 6.0-liter M120 served as the basis for the AMG-tuned engines used in the Pagani Zonda. An M120 also powered the one-off Isdera Commendatore 112i. Introduced in the 1990s, the M120 originally powered massive W140-series sedans and coupes as well as the R129 SL600, seeding the ground with potential donor cars that are uneconomical to fix.
As explained in a longer video posted a couple of years ago, this is actually the second M120 to go into this car. The original swap was done for a hill climb, during which the engine was terminally overheated. After a second engine was installed, the goal was to simply receive the car running and driving, with other work being gradually completed over time. The fresh exhaust system might not have been vital to making the Z drivable, but it’s safe to say that it levels up this build.
We did it! V12 m120 swapped Datsun finally sounds like an F1 car/Ferrari/SVJ/Zonda
The V12 is a tight fit in the 280Z’s engine bay, but this aluminum-block engine doesn’t weigh much more than the stock iron-block L-Series inline-six, helping to maintain good weight distribution even as producing a healthy amount of power (it was rated at about 400 horsepower in the W140 S-Class) before modifications. It’s connected to a Tremec T56 Magnum six-speed manual transmission.
The Rise of Unconventional Engine Swaps
The Datsun 280Z project highlights a growing trend: moving beyond the ubiquitous LS swap. While the Chevrolet small-block V8 remains popular for its affordability and readily available aftermarket support, enthusiasts are increasingly seeking unique and challenging engine swaps. This is driven by a desire for individuality, a pursuit of specific performance characteristics and a fascination with engineering ingenuity.
Why Ditch the LS?
The LS swap, while effective, has become somewhat predictable. The appeal of something different – a Mercedes V12, a BMW inline-six, or even a rotary engine – lies in the challenge and the resulting conversation piece. It’s about building something truly unique, a car that stands out from the crowd. The M120, with its roots in the Pagani Zonda and Isdera Commendatore 112i, offers a level of prestige and performance not typically associated with a Datsun 280Z.
The Engineering Challenges and Rewards
Undertaking an engine swap of this magnitude isn’t for the faint of heart. As demonstrated by Michael Tung and Jordan Easter, it requires significant engineering expertise, fabrication skills, and a willingness to overcome obstacles. Fitting a V12 into a 280Z’s engine bay, modifying the drivetrain, and ensuring proper cooling and electrical systems are all complex tasks. However, the rewards – a one-of-a-kind machine with exhilarating performance – are well worth the effort.
The Importance of Weight Distribution
A key consideration in any engine swap is weight distribution. The M120’s aluminum block helps mitigate the weight increase compared to the original L-Series engine, preserving the 280Z’s handling characteristics. This demonstrates a thoughtful approach to the build, prioritizing not just power but also overall balance and drivability.
The Future of Engine Swapping
The trend towards unconventional engine swaps is likely to continue, fueled by the growing availability of donor engines and the increasing sophistication of aftermarket components. We can expect to observe more projects pushing the boundaries of what’s possible, with enthusiasts exploring even more exotic and challenging engine combinations. The rise of online communities and social media platforms like YouTube (where TungTied documents their work) also plays a crucial role, providing a platform for sharing knowledge, inspiration, and technical expertise.
It’s great to see something more creative than an LS swap. And while there’s nothing like the sound of a small block V8, an uncorked M120 is something else entirely. Any car enthusiast within earshot of this Z will certainly appreciate the choice.
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