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VR30 twin turbo

Kyle from STILLEN was able to test drive the new 2023 Nissan Z and he taught the Z was absolutely amazing. His done exactly what anybody with the keys to the new Z would do. He has taken the Nissan Z through a canyon road near his home and it was an absolute blast to drive.

It handles extremely well, just hugging every single turn. No tire squeal, no drama. It just soaks it up and it just goes. Point and shoot steering, you get on the throttle and the rear end starts to come around.

2023 Nissan Z Test Drive | STILLEN

The Nissan Z has excellent power delivery from the VR30 V6 Twin Turbo 400 horsepower platform. It’s absolutely phenomenal to drive. You can definitely see the areas of enhancement that Nissan has made to the new Z.

STILLEN can’t wait to get there own Z and start to make some improvements. But again, these are improvements and modifications that are for the enthusiasts. They’re going to be for the enthusiasts who wants that extra power. The enthusiast that really wants to push it a little bit further and this car is going to respond so well to it. You can already tell that the new Z wants to go faster and wants to push harder.

From a styling perspective, Nissan has really hit a home run for the new Z. This is one of the best looking cars on the road. “I have to be honest, I didn’t love the original photos I saw. I didn’t think that the front end was really what I was looking for. As soon as I saw the Z in person for the first time, I knew I was wrong. The photos just don’t do it justice. This is a good looking car.” – Kyle.

The front end of the Z is designed to look like the older Datsun Z, similar to a 240 and a 260. Then you move around to the back of the Z and you get that 300ZX rear end immediately. The tail lights are a modern 300ZX tail lights, they’re absolutely fantastic. We can all agree that the rear tail lights are the best part of the design of the vehicle.

The katana down the roofline of the car is a very cool easter egg, but overall it’s just an amazing car. From a performance perspective, it handles incredibly well. You can tell that the power is there as soon as you put your foot down. It just scoots and gets going right away. This car wants to run, it wants to run hard, and you can already tell it’s going to be a lot of fun.

2023 Nissan Z Test Drive | STILLEN

Steve Millen History

In 1989 our company founder, Steve Millen, started working with Nissan. Nissan hired Steve to be the lead driver for their new sports car program. They were bringing in the 300ZX at the time. They were going to bring in two race cars; number 75 and number 76. It was a twin turbo V6 VG30 based engine and they took those cars to dozens of race wins, dozens of pole positions, two world championships, wins in Asia, Europe and America.

Steve Millen & team with the No. 75 Nissan 300ZX & No. 76 Nissan 300ZX After Winning the 1994 24 Hours of Le Mans

To this day, I believe Steve Millen still holds the record of being the only driver to win the 24 hours of Daytona, the 12 hours of Sebring, and the 24 hours of Le Mans in the same year. They had a crazy amount of success with that 300ZX racing program.

Steve really translated that success on the track into STILLEN’s road car program. He also worked very closely with Nissan, refining the 300ZX and giving them more power and developing all these parts through STILLEN.

Towards the end of the 300ZX in 1995, Nissan celebrated his relationship with them as well as the culmination of the Z. They built a special limited edition SMZ 300ZX. It was a Steve Millen design 300ZX. This was a car that you could also buy through your local dealership. They only made a little over 100 cars in North America and these cars were sold through the dealer network.

2023 Nissan Z Test Drive | STILLEN SMZ 300ZX

The dealers would call up STILLEN, and they would place their order for the cars. All the SMZ packages were the same. It was just the color of the vehicle that was different. The SMZ package came with different wheels, brakes, body work, and a little bit more power through an intake and exhaust. I think there was a computer reprogram and some interior enhancements too.

The SMZ package was a 300ZX that you could buy from the dealership with the factory warranty. That’s the type of relationship STILLEN has with Nissan. Working with Z’s goes through our blood, all the way back to the late 80’s and early 90’s.

2023 Nissan Z Test Drive | STILLEN SMZ 300ZX

When the 350Z came out it was very much the same. We didn’t do a SMZ package, but we did a whole catalog of parts for the 350Z. That catalog of parts included exterior styling, sway bars, intakes, exhaust systems, oil coolers, transmission coolers, supercharger systems, you name it. At one point, STILLEN had about 30 different products for 350Z. That really speaks to the STILLEN’s philosophy when it comes to the Nissan Z’s. The relationship that STILLEN has with the Z is strong.

2023 Nissan Z Test Drive | STILLEN 350Z

We don’t want to just do an intake or exhaust. A lot of the times when STILLEN brings other vehicles in for product development, that’s all we’re doing. We’re just doing an intake and an exhaust system, maybe a body kit.

2023 Nissan Z Test Drive | STILLEN 370Z

On the Z’s we tackle the entire car. It becomes a passion project for STILLEN because of that relationship and that connection that STILLEN has to the Z and to Nissan. We really want to refine it as best we can. So we’ll go front to back, top to bottom.

2023 Nissan Z Test Drive | STILLEN 370Z Parts

The Z’s are so special to us that we just want to give them as much attention and as much love as we can. That basically comes out by all the parts and all the enhancements that we make for the Z’s.

2023 NISSAN Z

2023 Nissan Z Test Drive | STILLEN DYNO Testing

We continue to work and develop new parts for the 2023 Nissan Z. The new STILLEN products are nearing their completion. Make sure to have your social media notifications on to be the first to hear about the new products. Hopefully your as excited as we are to bring the new products for the 2023 Nissan Z.

The Infiniti VR30 twin turbo might be one of the most hotly debated and anticipated engine design in years.  All the comments flying around the forums and blogs about a “cheap 600+ whp car” might make you wonder: is it wishful thinking, or an attainable goal?

For starters, the VR30 is not the same animal as the VG30 or a similar bulletproof iron block monsters of the 90’s. It’s also not a hand-built GTR motor already making 500+ hp.  Still, it’s all conjecture, and up until now Infiniti hasn’t released enough information to help separate fact from fantasy.

You may recall a few months ago we looked at the new VR30 Twin Turbo motor from an aftermarket perspective based on the information given at the time (An Aftermarket perspective on the new Nissan/Infiniti VR 3.0 Twin Turbo V6). Recently Infiniti released some “Technical Cinemagraphs” offering a closer look at this new engine. These Cinemagraphs give us a lot more information about the motor design and what we might be able to improve upon.

Twin Turbos and Two Outputs

As we already know, the VR30 will be a 3.0-liter V6 Twin-Turbo Engine with two output variations: one producing 300hp and the other a whopping 400hp. We covered the differences in the last blog post, so armed with fresh information we can look at areas we feel might yield results.

Intake Manifold and Intercoolers

Starting at the top with the most obvious (however not the cheapest) potential upgrade: the intake manifold. As you can see, the design of the intake manifold looks ideal for “packaging”. Looking at the diagram below you can see some of the restriction points as well as areas that are susceptible to turbulence. While this will work fine and is great for a the stock setup, it leaves room for potential improvement.

 

Take a look at the Nissan GTR Intake Manifold Design below. A larger plenum (which the OEM design doesn’t really have) helps take care of air starvation issue before the boost fully kicks in. The shape of the plenum creates less turbulence and feeds more directly into the runners. With this type of manifold, the runner lengths could also be optimized for performance. Coupled with the possibility of switching from an Air to Water to an Air to Air Intercooler setup (which would free up the space on top of the motor), a GTR-esque Intake Manifold would potentially yield serious gains.

GTR Intake Manifold_stillen

Intercooler Conundrum

We discussed an Air to Air Intercooler setup in the last article.  There are potentially limitations to the factory intercoolers as they were designed for a specific amount of power and boost. Also, with an increase in boost the almost 90° turn the air has to make could create another restriction point. If we can fit a front mount Air to Air Intercooler it could allow for a safer increase in boost and squeeze a lot more juice out of this new 3 liter.

You might say: “But STILLEN, what about the turbo lag from the increased distance between the turbo and throttle body?” While greater distance between the turbo and throttle bodies can increase the time it takes for the pressure to build, the effect is so negligible it’s not worth worrying about. The real difficulty lies with fitting all the plumbing in. We know what the Q50 engine bay looks like and an Air to Air Intercooler setup will prove very challenging. We hope that the Q60 gives us a little more space to work with. If not it should still be possible to upgrade the pump and heat exchanger for the Air to Water Setup, and/or upgrade the intercoolers themselves. However, because of the space restrictions, upgrading the actual intercoolers may be difficult.

High Flow Intakes

The next power grab opportunity is the intakes (everything pre-turbo). A visual analysis of the OEM design reveals an air flow path that can definitely be smoothed out. Understanding that Nissan/Infiniti had the parameters of the EPA to follow and NVH (Noise, Vibration, and Harshness) standards to meet, we know why they went with this design. Fortunately for us this leaves some room for improvement.

 

The air coming through the air boxes is forced through the restrictive panel filter, then takes a hard 90° turn over the Mass Air Flow Sensor (MAF) which is not ideal because of turbulence created by this design. It then executes yet another 90° turn before reaching the turbos. Simply reducing the number of turns in the system and creating a smoother path for the air as it passes over the MAF will allow for more accurate readings (helpful in tuning) as well as less restriction. The restriction can also contribute to a significant power loss. On other modern turbo powerplants, we have observed notable power gains by simply adding a high flow intake which can increase the boost (boost can be limited by restrictions on the intake side of both Turbo’s and Superchargers).

Exhaust & Turbos

Exhaust system modifications on turbo cars always generate power gains. Down pipes and cat-backs are already a given for the VR30 and will be available from STILLEN. Now we finally got a look at the cylinder head to turbo interface so we can see what might be done about turbo upgrades.

 

Looking at the design of the turbo flange, it appears that fabricating an adapter for aftermarket turbos should be pretty simple. Though we don’t know specs on the turbos yet, it won’t be difficult to sort out good upgrade options for those looking to make a lot more power. The only limiting factor might be space, but most upgrades shouldn’t pose an issue.

 

We still need more information about the engine internals before we can be more specific about turbo upgrades and increased boost. However, most Nissan/Infiniti Motors tend to be pretty hearty. The old VG30’s were capable of 550-600 whp with a healthy block and the VQ37’s held up to about 500 whp on stock internals (with Turbo Kits). It seems fairly safe to assume we be able to get this motor close to the 500 whp mark without reliability issues. The 600 whp mark that everyone is hoping for might be a possibility, but it will depend on the strength of the internals.

 

We will be getting a few VR30 equipped test vehicles delivered to STILLEN in the next few months. We can’t wait to get our hands on them and start doing some real world testing. Stay tuned for more articles and info on the VR30 as we continue to learn more about this motor!

 

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