Any rumors/schedules of DI coming to Z or GT-R powerplants?
 

Curious. Anyone hear anything?

I've heard of those "mysterious" blanked out ports in Ford's mighty 5.0 that suggests DI coming to that motor soon. :eek:

I'm still slightly surprised Nissan hasn't introduced DI in their VQ powerplant, given how venerable the engine is. Even more surprising is the GT-R's lack thereof, but that could be a function of cost.

It's too new. I haven't heard anything about it coming to the VQ. Like you though, I am surprised the GT-R didn't take a shot at it, especially with the compatibility of FI and DI.

The G37 is scheduled to get DI in 2012 (might be under the 2013 model) which hopefully translates to the Z.

how will that help?? better gas miles??

Yes, infiniti is installing Di...as of 2009, lol. Never happened.

Moving On
 

Nissan may be using a Benz powerplant in the next generation Z, 2-3 years from now, so why do much more developmental work on the current VQ series motor.

I read they'll be using Daimler's chassis' and putting their own engines in (next.gen. G sedan).

i sure hope not. that will make the g and possibly the z fat, bloated, soft, and become more of a touring cruiser and less of a sporty car.

Traditionally, yes, but consider what the Mustang GT traditionally handled like.

I read opposite. Nissan developed chassis with engine from Mercedes for G series. That sounds more realistic. Doubt Merc is willing to share their bigger Chasiss with Renualt/Nissan. But stranger things have come true.

I have read about compact Infiniti sharing A series chassis with Mercedes.

I havent seen anything about DI for 2013 for Infinitis. Perhaps I have missed something?

If we dont see a mid cycle update in VQ makes me wonder if they are planning whole new platform that will use Mercedes produced v6?

With Infiniti planning Mercedes motors in 2014 is rest of Nissan right behind them?

Will Nissan just let 370 Z stand with current VQ until perhaps a new Mercedes motor is built? Is Nissan also in line for Mercedes motors?

Or will Nissan use Z as platform for hybrid in 2014?

Seems to me brakes have been applied at Nissan on VQ development?

Read this its very intersting discussion amongst Mercedes and Renualt

http://blog.alliance-renault-nissan....ler-091411.pdf

I don't want DI unless they figure out how to keep the valves clean. The Audi and BMW DI engines get caked with oil and carbon junk on the valves, a big problem that they fail to address properly. That's why I won't buy one. Go ask the rs4 and S5 guys about their 70k cars with carbon junked valves. Needs to be done every 15k miles or so for cleaning. No thanks. Port injection works just fine.

Other Di engines don't have this problem, I think ford solved the issue.

Yeah no problems with my Mazdaspeed 6 with Direct Injection. Nearly 80K miles on that motor with no carbon build up etc.

Done properly it can work.

Yes, I believe the benefits of DI would outweigh the (seemingly) surmountable technical issues that are plaguing some current versions on the street right now. I have heard of the Audi powerplant issues, but that's pretty much it. Many other high-performance OEM makers are doing DI with apparently no issues.

Good to hear it may be coming to the G/Z, but still confounded by the lack of DI in the GT-R (or plans thereof). Understand the R&D costs on that engine were significant, but am curious on the design decision not to include.

C'mon, just Seafoam it every 5K miles :roflpuke2:

I wouldn't judge all direct injection engines based on Audi's or BMW's. Sounds like a minor design flaw.

It sounds like the sharing between Nissan and Daimler will focus on Infiniti's products, but everyone will benefit.

If everything is true about Mercedes, Renault and Nissan sharing development of power plants then VQ likely won't see any further development. I was surprised to not see DI in 2013 G previewed at auto shows. That to me signals an end of the VQ platform.

It wouldn't make sense to put any more money into VQ DI if they are spending money on Mercedes developed power plants. They will likely just do minor mods to current motor for 2013 and perhaps 2014. We have seen it before in Z33 platform where car really didnt change much during several year production run.

for selfish reasons I hope they don't come out with a DI VQ motor and stay with current motor until the next Z platform is introduced. That will give us more cars with same motor and help VQ aftermarket here in the US. Although sales of z34 will likely slow with more competition. The FT 86 from Toyota will slow Z sales for sure.

I can't wait to see what Renualt/Nissan have planned for next Z. I just hope they make one!


So I wonder if we will have the last Z with Nissan developed and built power plant?

Well they did say the 2013 GT-R is at like 80% of what they want the GT-R to be, so maybe they have that in store for later? They do seem to be adding improvements to it every model year, unlike the Z.......

The real question is, with the Z dwindling in sales. Will the next Z be imported to the united states??? I doubt they will stop making the Z, but we might be reading about the Z in major magazines vs us driving one. I think the japanese are probably tired of our criticisms and won't even send it over next go around.

Are u talking about complaints like too much NVH and road noise ?

Damn good point - I'm still planning on FI after the factory warranty runs out. :tup:

I was reading on the Juke forums the other day that a guy on there had this problem and had to get the head replaced.