We talkad about it here already: Will Alfa Romeo Ever Use Maserati’s Nettuno Technology?

I suggested someone should do an engine swap. 😁

 

you don't need an engine swap. I am curious about the tech specs of the Nettuno engine.
the guts, pistons, cylinders etc etc. when compared to our 90 degree V6 TT.
is it a question of tuning?? or have the internals been "upgraded".....
literally a side by side dissection of the engines to see the differences & similarities

 

While Maserati claims the engine is 100% Maserati, there has been a ton of speculation otherwise, from the displacement to the fact its 90 degrees just like the F154 and 690T, and it has the same firing order. Visibly as well they sure do look pretty similar.

It's likely a combo of some slight internal changes and tuning.

 

I'm not very well versed in engine technology, but the only differences between the two engines that i've heard about(so far) are:
-3L vs 2.9L
-Pre-chamber ignition stuff

IMHO, the MC20 started out as an Alfa Coupe (the test mule was a modified 4C), with the QV engine.

Thanks Michael Manley!/sarcasm

 

Different bore, different intake system, likely different heads. That’s just the obvious parts (if the published specs are to be believed). And that’s just what we “know”. I’d be hard pressed to call it a “ripped Alfa engine” let alone F154 based.

 

I’m at 720+. So far so good. Soooo far

 

Need those #s man!

 

I'm actually hoping Alfa will adopt the new GME T6 motor for the quad or a model below. It's a straight six engine going into new Dodge products based on the Giulia 4 cyl. I'll take a I6 over a V6 anyday.

2024 Dodge Challenger’s new engine revealed

An unofficial but reliable source told us which car might be the first to get the new straight-six engine—and it won’t shock you if you’re read the headline. The first car to get the 3-liter in-line six-cylinder dubbed GME T6 is likely to be the next-generation Dodge Challenger, as well as any...

www.stellpower.com

 

And what is the problem now with the F154 V6 2.9L 90 degrees 505hp QV engine?. What did I miss?.

 

“On 2 July 2020, Road & Track criticized the press release from Maseratithat claimed the engine is "100% Maserati". They claimed "it's not hard to see the connection to the Ferrari F154 engine and the Alfa Romeo 690T engine". Comparisons between the engine's 90-degree angle were the same as that found in the Ferrari engine, the rev limit of 8,000 rpm was also the same for the Ferrari SF90 Stradale. The firing order of "1-6-3-4-2-5" was identical to the F154-based V6 engine found in the Alfa Romeo Giulia and Alfa Romeo Stelvio.[16]”

Source:Maserati MC20 - Wikipedia

 

Nettuno is dry sump as well isn't it. But the blocks are VERY similar right down to the bolt holes.

 

here's the rub and there really isn't any way around it. with FI motors the initial response for more HP is to dial up the boost. which is like playing the game of perfection, when have you dialed up the boost too much & things start to grenade. but we are not talking about Subaru here, were are talking Alfa QV that was developed by Ferrari engineers under Mr. Krief. I don't consider helping the car breathe in and out better as internal modifications. I don't want to change cylinder heads, rods, etc.
I'm thinking if the intake system is upgraded?? from what it is, you add down-pipes & HFC and then a tune....the engine will be stout enough to get a 55-60 HP gain?? Once my extended warranty is over, I think I'm going to take the plunge...

 

here's the rub and there really isn't any way around it. with FI motors the initial response for more HP is to dial up the boost. which is like playing the game of perfection, when have you dialed up the boost too much & things start to grenade. but we are not talking about Subaru here, were are talking Alfa QV that was developed by Ferrari engineers under Mr. Krief. I don't consider helping the car breathe in and out better as internal modifications. I don't want to change cylinder heads, rods, etc.
I'm thinking if the intake system is upgraded?? from what it is, you add down-pipes & HFC and then a tune....the engine will be stout enough to get a 55-60 HP gain?? Once my extended warranty is over, I think I'm going to take the plunge...

I'm with you, my factory warranty comes to an end June and then it'll be get serious time.

 

Here's a little read i found interested in the the nettuno vs 690T.

Maserati's All-New Twin-Turbo V-6 Actually Shares Parts with Ferrari and Alfa

The new Nettuno V-6 has a unique head, but also has obvious links to other FCA products.

www.roadandtrack.com

 

I would say the engine is good for about 750bhp and 700btq. The internals not that strong. Rods are thin.

 

The GTA conrod's appear to have a different part number. Assuming they are different and stronger as we have been told, have you considering running them, or are you running some other conrod in your build?

 

They look good in red... Are they owned by the same person?

 

Yes. He an American James Bond villian like you. Haha. His garage is sick. Mc20 dozens of lambo. Ferrari. R8. Lotus. Great collection. He said the Alfa is best sedan ever drove. He loves his

 

If there was actual Aftermarket rods that made a difference I would of used them between the 6-8th time I removed engine out of 10 times
Total. This engine is maxed out currently and there is no progress in site because there is no money in it.

 

The platform is still relatively new, Alfa has never really been in the tuning scene historically, lot of people still on factory and extended warranties so not really tearing down their motors. What you really need is a bigger tuner like a Realstreet or AMS to go through the motor. Cept no one really building these cars for power. Bottom end is robust with sleeves from the factory and studs. Main problem i see spacing/plumbing for aftermarket turbos

 

Too little too late. This would have had to happen about 2019-2020. It’s too late. Many QV owners have moved on to other brands. 3,000 total sold in US. In 8 years. Maybe 35% would do ecu tuning. Maybe 1% would upgrade turbos at $15k. I suspect less than 3-4 people total would do full rebuilds at a minimal cost of $25k-$30k It’s just not a good platform for big power. I threw a rod at just 640wtq. Exited the party. Turbo restrictions. Fuel issues up top. Full engine out just to swap turbos is a major hurdle most don’t want to address. Half QV owners scared to change belt out for $1500

 

Check this link, it explains what makes the Nettuno so special. The thermal efficiency of 45% is extremely impressive for a production gasoline engine.
Maserati Nettuno: il V6 che nobilita la MC20
Usage of Google Translate, Deepl or some other translation tool of your choice is recommended.