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Discussion Starter · #1 ·
Hello community,

Not sure if this has been discussed (first post, go easy 😂)

Is it known on whether there have been any block changes in the VR30DDTT since the 2016 Red Sport that shares the same engine?

I’m referencing this, as there have been many instances where the VR30 has known to drink coolant as a ‘porous block’, which resulted in long-block and turbo failure, and for those not covered by warranty, had to fork out around 20-25k USD for a replacement.

Is it known if there were any revisions to mitigate this risk?

Thanks in advance
 

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Welcome to the forum @AusZ! Z1 motorsports made a post that explains some of the engine changes that they've picked out so far.

Have you thought about how you'd spec your Z?

http://instagr.am/p/CS9sMDKLI4v/
Behold the twin-turbo 3.0L engine and 6-speed manual transmission coming in the new Nissan Z. On the surface, the engine looks just like the one found in the Infiniti Q50 and Q60. Looking deeper though, you'll see that it is not quite the same. Let us expand on that a bit.

In the second and third images, you'll see one of the Z's turbos, and it is quite a bit different than the ones found in the Q. The overall shape is basically the same, however, it appears to be slightly larger, but maybe that's just wishful thinking. Each turbo now includes an electronically controlled bypass valve for boost relief that is located on the outlet side of the compressor. Optical sensors can be seen on both turbos and are used to control the electronic wastegates and display turbo speed on one of the Z's three console-mounted gauges.

As we move backward, you may notice that the 6-speed transmission isn't all that different than the 370Z's manual transmission although there are some very obvious changes. The shifter is quite a bit larger than earlier Z's, which is no surprise to us since Nissan has stated that the new Z's shift mechanism has been redesigned for a more positive feel. Although it isn't visible here we now know that the clutch hydraulics have been redesigned, moving the clutch slave cylinder back outside the transmission and solving the dreaded CSC problem that plagued the last generation Z. Lastly, it looks as if the rear portion of the casing has changed, likely because the cross-member or mount has changed.

Overall, we're pretty happy with these changes and we're excited to see how the car performs right out of the box.
 

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Discussion Starter · #3 ·
Welcome to the forum @AusZ! Z1 motorsports made a post that explains some of the engine changes that they've picked out so far.

Have you thought about how you'd spec your Z?


That’s good to know, I’ve been doing a fair bit of research on the VR, so just had some questions!

I am coming from a 600hp 2017 Focus RS, that suffered catastrophic engine failure prior to the build, hence my caution 😂

Given that, I have put the allocation deposit down for a 6MT Boulder Grey Z, and I think I’ll respect the warranty for a while at least. Just lower it on some Coilovers, a catback exhaust and probably some Bronze SSR Professor SP5 3P wheels to set it off.

How about yourself? ☺
 

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Knowing Nissan, yes any issues from the Infiniti Q's will be on the new Z.

Nissan NEVER admits error, and even quiet part revisions rarely seem to solve persistent issues.

The Gen 1 Titans had faulty exhaust manifolds, several revisions never solved it.

The Gen 2 Titans munch cylinder #7, Nissan won't reveal why....

The older Infiniti interior materials melt into a gooey mess, Nissan/Infiniti won't accept responsibility or share what went wrong with the manufacturing process.

Their CVTs are a disaster. They have finally begun to give up on the CVT.

When I had my VQ37 Q60 AWD in for service at an Infiniti dealer last month, there was a Q50RS with the engine/drivetrain out for turbo issues. According to my service advisor it is quite common issue on the VR30DDTT. And servicing a turbo(s) is effectively impossible with the engine in the car.

All that said, I am still excited to buy a new Z. With Ghosn gone, things are getting much better for Nissan products. I don't think a new Z will be any less reliable or tunable than any of it's few competitors.
To me, it's still a better proposition to own the new Z than modify an older one or buy a similar competing vehicle.
 

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Discussion Starter · #5 ·
Knowing Nissan, yes any issues from the Infiniti Q's will be on the new Z.

Nissan NEVER admits error, and even quiet part revisions rarely seem to solve persistent issues.

The Gen 1 Titans had faulty exhaust manifolds, several revisions never solved it.

The Gen 2 Titans munch cylinder #7, Nissan won't reveal why....

The older Infiniti interior materials melt into a gooey mess, Nissan/Infiniti won't accept responsibility or share what went wrong with the manufacturing process.

Their CVTs are a disaster. They have finally begun to give up on the CVT.

When I had my VQ37 Q60 AWD in for service at an Infiniti dealer last month, there was a Q50RS with the engine/drivetrain out for turbo issues. According to my service advisor it is quite common issue on the VR30DDTT. And servicing a turbo(s) is effectively impossible with the engine in the car.

All that said, I am still excited to buy a new Z. With Ghosn gone, things are getting much better for Nissan products. I don't think a new Z will be any less reliable or tunable than any of it's few competitors.
To me, it's still a better proposition to own the new Z than modify an older one or buy a similar competing vehicle.
I think they have solved the issue with the serpentine belts and turbos that plagued the Q50RS, as I heard that was due to the system not being able to vent properly - hence seems uncommon on the 2018+ models.

Sounds like the rare porous block issue will remain, but isn’t that common anwyay. I’m keen as to get my hands on the new Z despite this
 

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I think they have solved the issue with the serpentine belts and turbos that plagued the Q50RS, as I heard that was due to the system not being able to vent properly - hence seems uncommon on the 2018+ models.

Sounds like the rare porous block issue will remain, but isn’t that common anwyay. I’m keen as to get my hands on the new Z despite this
Serpentine belt issue can be solved, there's an alignment procedure for that.

I still think there will be turbo issues.

I often hear people say "I think they solved the issue" when talking about a newer car. Give it a year or 2 and everyone realizes nothing was solved
 

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That’s good to know, I’ve been doing a fair bit of research on the VR, so just had some questions!

I am coming from a 600hp 2017 Focus RS, that suffered catastrophic engine failure prior to the build, hence my caution 😂

Given that, I have put the allocation deposit down for a 6MT Boulder Grey Z, and I think I’ll respect the warranty for a while at least. Just lower it on some Coilovers, a catback exhaust and probably some Bronze SSR Professor SP5 3P wheels to set it off.

How about yourself? ☺
Wow that's some serious horsepower for your RS! What kind of work did you do to it?

I'm leaning to a 6MT in Gun Metallic but you could ask me next week and I'm sure I'd change my mind on the color :LOL:
 

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I think they have solved the issue with the serpentine belts and turbos that plagued the Q50RS, as I heard that was due to the system not being able to vent properly - hence seems uncommon on the 2018+ models.

Sounds like the rare porous block issue will remain, but isn’t that common anwyay. I’m keen as to get my hands on the new Z despite this
I believe there was a service bulletin Infiniti released for the drive belt a few years ago.
 
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