coupe - sedan - even Z's 03-04, 05-06, 07-08 SE, DE, rev up, VQ, VQE ????

I'm lost with all the differences

what makes one more powerfull than the other ? can those changes be made / added to the lower powered G's ??? are the engines interchangeable ?

maybe I suck at searcing but didn't see a thread that explains all of this mess

 

You're probably better off trading if you want the more powerful engine. Good luck.

 

Automatics 03-04 HP:260
Automatics 05-06 HP:280
Automatics 07+ HP: 306

6MT 03-04 HP: I THINK 260 or 275
6MT 05-06 HP:298
6MT: 07+ HP:306

Rough estimates.

 

No.

Below I've posted the horsepower ratings for all V35, V36 and Z33s that left the factory since '03. Keep in mind that Nissan used the less accurate SAE Net method until the '06 model year. Starting in '07 they used the revised SAE Certified method. This explains why the '06 G35 Coupe 5A/T which uses the same VQ35DE as the '07 G35 Coupe 5A/T is rated at 280hp versus the '07 which is rated at 275hp. Similarly, the '06 G35 Coupe 6M/T is rated at 298hp while the '07 G35 Coupe 6M/T is rated at 293hp. The G Sedan and the Z on the other hand switched over to the HR motor in '07 so the 306hp rating for the '07+ G Sedan and the '07+ Z are accurate according to SAE Certified standards and in fact make even more power than their '06 forebears since according to the numbers, the '06 motors were overrated by a few hp.

If someone feels inclined to do so, feel free to copy my post and add the torque ratings and peak power and torque rpm figures. I'm feeling informative but not THAT informative right now.



2003 - 2004:

G35 Sedan 5A/T - 260hp (VQ35DE non Rev-Up)
G35 Sedan 6M/T - 260hp (VQ35DE non Rev-Up)

G35 Coupe 5A/T - 280hp (VQ35DE non Rev-Up)
G35 Coupe 6M/T - 280hp (VQ35DE non Rev-Up)

350Z 5A/T - 287hp (VQ35DE non Rev-Up)
350Z 6M/T - 287hp (VQ35DE non Rev-Up)



2005 - Major changes include the rev-up VQ introduced on 6M/T G Coupes and Sedans as well as the Track and 35th Anniversary Versions of the Z:

G35 Sedan 5A/T - 280hp (VQ35DE non Rev-Up)
G35 Sedan 6M/T - 298hp (VQ35DE Rev-Up)

G35 Coupe 5A/T - 280hp (VQ35DE non Rev-Up)
G35 Coupe 6M/T - 298hp (VQ35DE Rev-Up)

350Z 5A/T - 287hp (VQ35DE non Rev-Up)
350Z 6M/T - 287hp (VQ35DE non Rev-Up)
350Z Track & 35th Anniversary Models - 300hp (VQ35DE Rev-Up)



2006 - The only change for '06 was the introduction of the rev-up VQ across the board for all 6M/T Zs:

G35 Sedan 5A/T - 280hp (VQ35DE non Rev-Up)
G35 Sedan 6M/T - 298hp (VQ35DE Rev-Up)

G35 Coupe 5A/T - 280hp (VQ35DE non Rev-Up)
G35 Coupe 6M/T - 298hp (VQ35DE Rev-Up)

350Z 5A/T - 287hp (VQ35DE non Rev-Up)
350Z 6M/T - 300hp (VQ35DE Rev-Up)



2007 - The biggest change for '07 include the introduction of the all new VQ35HR in the 2nd generation (V36) G35 Sedan and the updated '07 350Z. The motor is rated at 306hp (SAE Certified) regardless of the application or whether it's backed by a 5A/T or 6M/T. As for the G35 Coupe, hp ratings dropped by 5 for both the non Rev-Up 5A/T and the Rev-Up 6M/T as per the new SAE Certified hp rating system:

G35 Sedan 5A/T - 306 (VQ35HR)
G35 Sedan 6M/T - 306 (VQ35HR)

G35 Coupe 5A/T - 275hp (VQ35DE non Rev-Up)
G35 Coupe 6M/T - 293hp (VQ35DE Rev-Up)

350Z 5A/T - 306 (VQ35HR)
350Z 6M/T - 306 (VQ35HR)



2008 - The big change for '08 was of course the introduction of the 2nd generation (V36) G Coupe now dubbed the G37 to reflect an increase in engine displacement from 3.5L to 3.7L via a longer stroke. The G37 is also the first vehicle in Nissan/Infiniti's lineup to feature the company's all new VVEL variable valve event and lift system.

G35 Sedan 5A/T - 306 (VQ35HR)
G35 Sedan 6M/T - 306 (VQ35HR)

G37 Coupe 5A/T - 330hp (VQ37VHR)
G37 Coupe 6M/T - 330hp (VQ37VHR)

350Z 5A/T - 306 (VQ35HR)
350Z 6M/T - 306 (VQ35HR)

 

sweet thanks bruddaman

so how in 03-04 does the G sedan get 260hp the coupe 280hp and the Z get 287. If they're all non rev up motors how does one make so much more than the other ? It has to be more than a different intake, or the addition of a Z tube.

can a non rev up motor be converted to a rev-up motor ?

can the crank of the G37 be added to an earlier G's to get the larger displacement ?

I asked about the interchangeability of the motors b/c I've seen some nice longblocks on e-bay. Supercharging mine may be easier, cheaper and net me much more gain but I just wanted to explore the options.

 

According to 3rd party dynos and also 1/4 mile times, the performance difference between a 260hp sedan and 280hp coupe is about nill. According to the dynos, the 260hp sedan is actually making closer to 275hp. According to Infiniti, the coupe makes additional power because of it's higher flowing exhaust and revised variable intake cam timing that takes advantage of the improved flow.

 

the coupe mid pipe and muffler is the only difference correct ? The exhaust manifolds and cats are the same ??

 

Yes, and according to Nissan, they were able to adjust cam timing to take advantage of the improved exhaust flow. Personnally, I think they're full it and it's just marketing hype.

 

It was marketing hype. They just wanted the "sportier" Coupe to "appear" more powerful than the Sedan. In all honesty, the '03-'04 Sedans were cranking out the same 280hp as the Coupe (275hp if you go by the later corrected SAE Certified numbers).