rb26dett vs neo6

[Boris]

i just read somewhere the neo6 uses variable valve tech

why doesnt the rb? wouldnt it help dramatically with low rpm/cruise fuel consumption and high end open throttle power?

does have 2 turbos make it obsolete? wuldnt u get even more power?

if so, is it possible to adapt the vvt from the neo to the rb engine?

[DJ984]

what's the RW output on a neo6? (out of curiosity)...

[Boris]

http://skylinesdownunder.com/mod.php?mod=u...=2100&page_id=8

and scroll down

[Driver]

fairly sure they both the gtr and gt-t put out 206kw standard.

that sais 187

[martydaman]

That website is wrong, im quite sure that the NEO6 has 206kw also.

206kw are factory flywheels figures but im sure someone who has a reasonably stock GTT with a dyno sheet can tell you the RW numbers

[Silver-Arrowz]

The R34 GTR's RB26DETT has VVT from my understanding.

Don't forget, the older generation RB26's are designed way back in the 80's with the R33 GTR's engine being more a improved version only, not a complete overhaul.

You may be able to but that would mean use the neo's head and changing ecu's. Not sure though.

[sewid]

the power output of the RB25DET neo and the RB26DETT might be the same on the nissan brochure but in real life they are quite different.

The RB26DETT revs higher and puts out 50Nm more torque. The stock power figure is probably closer to 250kw. Fujitsubo claim about 247kw for a stock BNR34 on their exhaust website.

I offer to put mine on any 4 wheel dyno. I dont know where the nearest one is.

[martydaman]

is that figure at the flywheel??

It would be expected that the NEO wouldnt match the RB26 but it seems that the factory figures (obviosly changed for the jap power laws) are extremely inaccurate. Also comparing RW figures on the NEO and RB26 would be difficult as the cars run with differnet drive setups.

Sewid, if your gonna put your car on the dyno, could you disconnect the front driveshaft

I want to know what the power difference 4WD and RWD is with the same engine

[sewid]

Yeah both power figures are innacurate - the NEO probably makes more than 206kw as well. There was a gentlemans agreement between manufacturers in the 90s that limited power output to 280ps (206kw). This is why cars kept coming out faster and faster and with more and more torque but still had 206kw.

Figures are at the flywheel.

If i could find a 4wd dyno I would not remove the drive shafts as I never really plan on leaving the car like that so am not personally interested in its RWKW figure. Bit of a hassle and im too lazy is the real reason though

[ed]

Isn't 206kw the limit for the gentlemen's agreement?

I don't believe that the RB26DETT has 206kw stock at all like sewid says it has more in stock form and I don't think any RB26DETT has VVT (NVCS - Nissan Variable Valve

Timing Control System) at all.

http://www.tomei-p.co.jp/_2003web-catalogu...haft-specs.html

[martydaman]

is it possible that the figures of 206kw are actually at the wheels?? judging by the flywheel power of ~245kw it would be expected that at the wheels the GTR would only pull out around 200... having the 4WD system would also impact on the difference

[Driver]

it sais 206kw in the brochure and those figures are pretty much always taken from the flywheel.

[r3v[ENG]3-]

any of you guys read wheels about a year ago when they compared an N1 R34 GTR with a Monaro GTS?

They put the GTR on a 4WD dyno and came up with 215kw at all 4 wheels. this equates to 300+ kw at the flywheel. Tho this is the N1 with bigger turbos and more boost, im guessing the figure of 250 kw for the normal GTR R34 would be about right.

I read that the japanese 206kw agreement is off due to other manufacturers (international) making cars with much more than this and they want to be able to keep up.