Skyline R34

[jazza08]

Hey

Ive seen on the internet that the engine power ratings on the R34s with the Neo Straight six's are quiet impressive...

Ive seen 2L neos advertised but havnt read about them...

The 2.5L Non Turbo producing 200kW

2.5L Turbo producing 206kW (same as 2.6L Twin Turbo but less torque).

Ive read this on the internet a few times..

Just making sure its correct? And also what does the 2L engine produce seeing as some R34s have them (so ppl advertise)??

[JezR31]

2L Neos Ive never herd of them except for the 2.5L Neo.

The only 2L i know of being in the r34s were the rb20de engines.

[jazza08]

http://www.carsales.com.au/pls/carsales/!c...rch_distance=50

http://www.carsales.com.au/pls/carsales/!c...rch_distance=50

two examples....

2L R34 Neos....

Can anyone answer my question aswell?? plz?

[Jetdat]

i believe the turbo Neo 2.5l is 206kw....but never heard of the N/A producing 200kw.

[jazza08]

I read it in errr... a site lol

How come the neo engines are so much more powerful??

Not that im complaining!

Read the N/A was 200kW but a fair bit less in torque...

206kW is the legal limit in Japan for stock engines im guessin right..?

Because all major engines STOCK from diff makes etc 206kW.

I cant wait to get an R34!!! Be waitin for a few years tho...

[jazza08]

One more thing, wats tiptonic... or however you spell it. Gear changing behind the steering wheel, does that apply for the 5spd manuel version of the R34..???

I was abit confused by that and didnt find any info on it.

[JezR31]

The neos are also in the Nissan Laurel.

Well the rb25det Neo has different ignition timing ( more advanced VVT system). I guess thats how it got some of its extra power.

All the Neo Motors use whats called a Lean-burn System. Hence ( low fuel consumption )

I found out that there is a 2L neo. It delivers maximum power of 155HP. which really isnt much. I suppose its pretty good for an NA 2L

It would have cost nissan alot more money getting 200kw out of a 2 litre.

Now you said that the 2.5L Neo "NON" turbo makes 200KW

Then you said the 2.5L Neo "TURBO" makes 206KW. What is the point of the turbocharged motor if they both make the same power??

Nissan could have kept the 2.5L an NA motor and still get GTR power.

Well really the 2.5 NA does not make 200KW, Its 200HP

the Neo RB25DET model makes 206KW (280HP)/6,400 RPM

34.0KG/3,200 RPM

CR = 9:0:1

[jazza08]

oh ummm ok...

So the r34 has this tiptonic thingo?

There is a difference in the the internals of the GTR and GT-T, the GTR gets more torque and can with stand higher kW ratings with stock internals i THINK?

[Demon Dave]

The R34 25GT (NEO RB25DE) makes 200PS standard (around 200bhp), not sure KW's. which is slightly more than the RB25DE found in the earlier R32/R33. The engine also has higher torque outputs, and late model R34's have a slight improvement over earlier R34's. AFAIK, R34's were available with either Triptronic Auto boxes (+ / - gear change and steering wheel controls) or a 5sp manual.

On paper the R34 GTT (RB25DET) and the R34 GTR (RB26DETT) put out the same power (280ps), but of course, that's "on paper"...

[Rezz]

>jazza08: Looks like your confusing yourself there dude!

Just relax, one question at a time, and "All will be rrrrrrrrrrrrrevealed"... (Thumbwars)

Thanks Dave for that "Gem" about the Neo-6 power outputs... seriously, how many mouse clicks did it take to get some official figures? 4? 5?

[jazza08]

heheeh ok...

Pitty da manuel version didnt ave gear changes behind da wheel!! haha

FUNNNNN

Ferrari F1 Style

[Demon Dave]

Rezz - about 3 or 4!!

As an aside, most of the people I know of, who drive an R34 with the triptronic box say that don't usually bother with the steering controls...

I personally think Nissan did a very good job in upping the power figures for the R34 range, by tweaking the RB series engines, improving (or adding?) VVT to the NEO engines they managed to boost power/torque by a fair bit...

So that always raises the question - how come the R34 GTR doesn't get VVT and NEO technology?

Dave

[jazza08]

The GTR engine isnt neo..??

I thought they would of changed it to be more advanced..

Maybe its becoz of the legal limit of kW in Japan??

If they could im sure they'd bring out a 300kW stock GTR engine hahha oooo

[supraboy]

i'm no expert, but i think that the GTRs actually have a stock output close to 300kw, probably a little less. The only reason that they say it has 206kw is to comply (ON PAPER) with the regulations. And i think that there are no more restrictions in japan for power output, need i say more about the next GTRs power??? again im no expert, so someone correct me if i'm wrong.

[JezR31]

In this chart nissans stock power figures are in blue. Someone Dynoed there stock RB26DETT and the power figures are different to nissan's.

Peak Power of 330BHP@6500 RPM

Peak Torque of 40KGm@3500 RPM

[SS8_Gohan]

If u even take the GT-T power output as correct, 206kw's, a stock dyno run (148rwkw) shows pretty much 30% power loss thru the drive train, that's 30% not 33%. If u translate this powerloss percentage to GTR's at about 190 - 195rwkw's, making them about 280kw's at the fly.

Now i'm not sure if transferring 70% of the engine power to the wheels is reasonable to assume, but if it is 206kw for the GT-T and 280kw for the GTR sound about right.

Oh and just in case u didn't realise, the GTR engine is 2.6 litres and has 2 turbos, instead of one RB26DETT

Tiptronic can be done via the gear stick as well yeah? Or is just steering wheel mounted buttons?

And the "206kw" limit was a "gentlemans agreement" in Japan between the different car manufacturers. But if u look at some of the cars that have been produced, 22B STi's, GTR's, Twin Turbo Supras, etc, they haven't been following it completely. But the agreement is no longer so yeah, time for the Japanese cars to mix it with the Euro boys in terms of power output.

cheers.

[Abo Bob]

You can change gears with a tiptronic on the steering wheel or with the gear stick. I have also heard that most people don't use the buttons on the wheel but I do all the time. I think it's because from the very first day I owned it I used them.

The only problem I have is that if you're booting it you have to press the button about 1000rpm before you want it to actually change gears because the revs climb so quickly.

[funkymonkey]

NEO stands for New Environmental Optimisation or sumfin like that, all it duz is make the emissions from the engine better. The increase in power is from the upgraded ECU that accompanies the engine... don't believe the hype

[Demon Dave]

Spot on FunkyMonkey - the NEO part of the R34 engines basically means they've tweaked it to produce fewer/cleaner emmisions. However, the R34 engines do benefit from ECU tweaks (and also manifold flow characteristics I've heard) that give it the extra power. Not forgetting improvements in the VVT side of things...

BTW, NEO = Nissan Ecology Orientated performance...

[DaiOni]

The gentleman's agreement is just that, an agreement - it's not legally binding. There is a hell of a lot more mutual agreement between companies in japan, as opposed to western nations. That's one of the reasons why you often find that pricing for similar products can be very similar between different companies (ie: intercoolers, etc).

The reason for the kW (or we should say, ps) limit is (apparently) to keep the companies on a level playing field and/or to stop any potential power 'wars'

If you look at the cars that exceed the kW agreement - they tend to not be directly from the big companies (HSV is to holden as Nismo is to nissan).

IIRC, the car with the most power over the advertised 280ps is the toyota supra (though the s8-9 FD rx7 probably has even more if you consider power:weight)