Infiniti M56 horsepower prediction?

[GT-R]

What do you all predict the horsepower of the new 5.6L DI VVEL is going to be?

IIRC, I remember reading that the upcoming VQ37VHL with DI will get somewhere in the neighborhood of 350HP. That is about 94.6 HP/Liter.

The non DI Nismo 370Z VQ37VHL already makes 350HP.

The FX50's VK50VE makes around 78 HP/L without DI.

If the new 5.6 makes anywhere close to 80 HP/L or even a little more, that puts it close to the 450HP range. Imagine if it made closer to 90 HP/L!

Oh yeah, I forgot, the Nismo VK56DE for FIA GT1 racing makes 600 HP and 479 LB.FT, so it has huge potential.

One can dream right?

Welcome to the 400HP club Infiniti...

[j 4 lD]

5.6l 400+ HP 2011 Inifniti M56!

[itgogitrev]

Oh yeah, I forgot, the Nismo VK56DE for FIA GT1 racing makes 600 HP and 479 LB.FT, so it has huge potential.

Any engine that has multiple teardowns and runs on race gas doesn't count. That's like saying that I-4s are the isht because there were racing teams in the 80's that were getting over 1200hp out of them.

I'm thinking that they'll make it 370-380. This engine is kinda Nissan's lazy, low revving V8. I'm actually surprised they didn't just put in the VK50VE. That engine is already a good tune away from 400hp.

[humble226]

Originally Posted by itgogitrev

I'm thinking that they'll make it 370-380. This engine is kinda Nissan's lazy, low revving V8. I'm actually surprised they didn't just put in the VK50VE. That engine is already a good tune away from 400hp.

You're thinking of the old VK56DE in the Titan and QX56. The M56 will have the VK56VD with VVEL and direct injection. Clearly there is a reason they didn't go with the VK50VE from the FX50, probably because they knew they would get their asses handed to them by the upcoming 555i and other competition, and wanted to make certain they stayed ahead of the curve in performance.

I found a google reference that says 420 bhp, though I'm not sure if that is fact or fiction. Infiniti only said "more than 400hp", so the real question is how much more. The thing I'm really surprised by is no turbo version. This thing had better be well under 5.0secs 0-60.

[TNC 718]

Until the GT-R actually came out, Nissan kept saying "400+", and it ended up putting out 480. Nissan's probably gonna keep quiet about the HP number until the new 5-Series comes out. Nissan always wants to be ahead in the HP game.

[GT-R]

So, how does 429 HP sound?

I was lucky enough to participate in an early focus group last year and got to see full scale models of this car in person. At that time I owned an 07' G35x just so you can understand my opinion.

When I walked into the section of the room that had the cars in it, they had this car lined up against the Lexus GS, BMW 5-Series, and Mercedes-Benz E-Class. I literally stopped dead in my tracks when I saw the M. My first thought was it was a G on steroids. I love the G lines, they just ooze power and performance.

This car doesn't look bad from any angle. They made us comment from at least 6 different viewpoints around the car. It drips muscle and luxury from everywhere. The other cars just didn't hold candle to this model.

The one thing I can't stand about the older Infiniti's is the interior. Just doesn't stand up to the exterior styling. Having sat in an interior mock-up, it addressed just about all of my issues. Their attention to detail even went down to the level of the interior door handles. The signature clock is even mother of pearl. It oozes luxury inside.

The V8 will be about 429 HP if they hold true to what they told us on the V8 focus group. They even had a hybrid group so that might be coming down the road. There will be some really cool tech coming in as options that will rival the new toys on the E-Class.

The current Japanese car owners all went nuts, the Euro car owners were mixed. I have to say that when they come out with the AWD M56x I will probably be first in line.

[SIR NUPE A LOT]

No matter this will be my next car, simply for the interior!!!!

[PR G35S]

Please God, let Infiniti install this 5.6 V8 in the G sedan...

[BloodlineG]

that would be sickk.

[05G356MT]

Originally Posted by TNC 718

Until the GT-R actually came out, Nissan kept saying "400+", and it ended up putting out 480. Nissan's probably gonna keep quiet about the HP number until the new 5-Series comes out. Nissan always wants to be ahead in the HP game.

They're using the 4.4l V8 TT found in the 750i, 400hp 450tq. That's going to be tough with only 429hp especially with how BMW underrated their 3.0l TT engine.

[gt_performah]

I found this info posted by a member on another car site:

I work for Infiniti, the next generation M will NOT have the QX56/Titan engine, it’s actually going to have a bored and stroked version of the FX50 engine, so it’s going to have the Vvel and all of the other goodies that engine has.

It's not confirmed so take it for what it is.

[John English]

Originally Posted by gt_performah

I found this info posted by a member on another car site:



It's not confirmed so take it for what it is.

The 5.0L and 5.6L are both based on the 4.5L in the current M45. So you can't say "It's going to be a bored and stroked version of the 5.0" Since the 5.6 came first you could saay the 5.0 is a downsized version of the 5.6. You can read about the development of the current 5.6L here.

To quote from the white paper:

...this engine achieves top-level driving comfort in its class as a result of being derived from the VK45DE engine that was developed for use on a sporty luxury sedan.

[humble226]

Originally Posted by John English

The 5.0L and 5.6L are both based on the 4.5L in the current M45. So you can't say "It's going to be a bored and stroked version of the 5.0" Since the 5.6 came first you could saay the 5.0 is a downsized version of the 5.6. You can read about the development of the current 5.6L here.

To quote from the white paper:

This is about the VK56DE, the old Titan engine. The new one is the VK56VD.

[heyu]

i read somewhere that nissan/infiniti is going to create a m56 coupe to compete with 6 series...hp on the infiniti m56 is going to be place between bmw's 650i and m6. fx will be fx37/fx56 in the future.

[jonnylaw]

hp on the m56 will be 420.