It looks like there’s some Ferrari and Alfa Romeo DNA in Maserati’s Nettuno engine after all

For years, Maserati has been buying engines from Ferrari to power its cars. It wasn’t a bad arrangement at all, really, but that’s also why the recent news that it was building its own all-new engine – known as the Nettuno V-6 – in house was such a big deal. It’s finally starting to look like Maserati is staking its own independence from Maranello, but now, it looks like the Nettuno engine isn’t as all-new as Maserati led us all to believe.

What’s the Deal With Maserati’s Nettuno Engine?

Maserati's “All-New” MC20-Bound Nettuno V-6 Engine Is Shrouded in Lies and Deceit
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The shade cast across Maserati’s new twin-turbo Nettuno V-6 comes courtesy of Road & Track, who completed an in-depth investigation into how the engine is built.

As it turns out, there are several parts of the Nettuno’s engine that are an exact match for those found inside the Ferrari F154 V-8 and the Alfa Romeo 690T engines.

The latter of which you’d recognize as being found under the hood of the Giulia and Stelvio Quadrifoglio.

Maserati's “All-New” MC20-Bound Nettuno V-6 Engine Is Shrouded in Lies and Deceit
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According to R&T’s report, the Nettuno’s 90-degree angle is identical to that of the F154, just like the rear layout. Taking things a step further, the Nettuno has an 88mm bore and 82 mm stroke which, believe it or not, is identical to the F154 engine found inside none other than the Ferrari SF90 Stradale. It even has the same 8,000 rpm rev limit. The engine’s firing order – 1-6-3-4-2-5 – is identical to that of the 690T engine found in the Stelvio and Giulia. This is all on top of other similarities to the engine found in the Ferrari California T.

There Is At Least Something That Maserati Built For Itself

Maserati's “All-New” MC20-Bound Nettuno V-6 Engine Is Shrouded in Lies and Deceit
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While it seems as if the design of the block, the firing order, and the bore and stroke (no word on the pistons) are the same, Maserati seems to have built to top end itself.

The Nuttuno’s head is reportedly built inhouse and completely unique to it. It features an 11:1 compression, something you won’t find in any Ferrari. The head also has pre-chamber technology that’s derived from Formula One engines.
Maserati's “All-New” MC20-Bound Nettuno V-6 Engine Is Shrouded in Lies and Deceit
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With all of this in mind, it’s clear that Maserati has done some of its own work, but it’s hard to ignore the similarities between it and the F154 and 690T engines. It’s almost as if Maserati borrowed the engine block and worked its way up from there, keeping some things the same and focusing on building an all-new top end that it can call its own. If that’s the case, it’s not exactly an all-new engine, but we’re willing to say it’s pretty damn close.

Source: Road & Track

Robert Moore
Editor-in-Chief and Automotive Expert - robert@topsped.com
Robert has been an auto enthusiast his entire life. He started working cars at a young age, learning the basics from his father in the home garage on the weekends. As time went on, Robert became more and more interested in cars and convinced his father to teach him how to drive when he was just 13 years old. Robert continued working on cars in his free time and learned as much as he could about engines, transmissions, and car electrical systems, something that only fed his curiosity more and eventually led him to earn a bachelors degree in automotive technology with a primary focus on engine performance and transmission rebuilding.  Read More
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