Rb25de Vs Rb25det (r34 Neos)

[Grunta]

Hello to all that read this,

Im just wondering what are the differences between the RB25DE and the RB25DET,

And dont say one has a turbo or puts out more power,

I want to know the nitty gritty, cams, pistons, crank, rods, head etc

I know compression ratio is high in the NA, but how is this achieved?

[SKiT_R31]

Hello to all that read this,

Im just wondering what are the differences between the RB25DE and the RB25DET,

And dont say one has a turbo or puts out more power,

I want to know the nitty gritty, cams, pistons, crank, rods, head etc

I know compression ratio is high in the NA, but how is this achieved?

turbo is 9:1 CR, N/A is ~ 10.2:1 CR, achieved by different pistons.

Cams are the same, i think just on the turbo the exhaust cam gear is shifted a couple degree's.

Thats the internal difference, external theres the Injectors (370cc vs 270cc), ECU (to power injectors + different map & limiter), obviously different exhaust manifold, intake piping, things like clutch is different, different gbox.... thats about it...

[GTS4WD]

The springs on the NA's are softer than the turbo ones.

And one has a turbo and puts out more power

Remebering that 34's have a different head than the 33's and 2's because of the VVL

[R34GTFOUR]

The springs on the NA's are softer than the turbo ones.

And one has a turbo and puts out more power

Remebering that 34's have a different head than the 33's and 2's because of the VVL

i know the r33 rb25de have softer springs than the det, but i've heard the neo engines are the same for both turbo and na

also if the pistons are the only thing different internally, i wonder if the na shares the same gtr rods as the neo det?

anyone pulled a na neo apart yet?

Edited April 11, 2008 by R34GTFOUR

[SKiT_R31]

The springs on the NA's are softer than the turbo ones.

I was gonna mention this, but wasn't 100% sure it was true

[Grunta]

What about auto gear boxes between the two?

[MissR34]

fuel injectors for the R34

N/A 249cc

Turbo 370cc

i only know this could i upgraded my injectors to the turbo ones and i called nissan to see what the difference was!

[Eug]

being new you're obviously going to ask a lot of questions.

much of the stuff has been covered before... give the forum a search instead of posting a new thread for each question.

cheers

eug

[andreR34]

I had a r34 gt4 automatic with rb25de neo. anybody has any idea about the auto Gbox strength? how much power it can handle? is it different with the rb25det neo auto gearbox?

anybody with knowledge please!

[N-DAWG]

The R34 Neo Auto is tiptronic. I remember seeing an R34 GT4 and it was a non-tiptronic auto. I'm not sure what the difference is in gearbox strength etc between those two though.

[iseekool]

All R34 GT4s do not have the tiptronic functionality. From memory the gearboxes are still physically the same (RWD and AWD), just no tiptronic for the GT4 and RB20DE NEO. Tiptronic is only for the RB25DE and RB25DET

[GTS4WD]

Dont know if relevant or mentioned, but,

DET NEO's conrods are the same part number as RB26 rods

[Jack88]

the RB25DET has extra oil squirters internally somewhere apparently, read it somewhere on here a while ago when i was reasearching the the same thing.also that the DE rods are actually thicker then the DET rods.

[Dicer]

i know the r33 rb25de have softer springs than the det, but i've heard the neo engines are the same for both turbo and na

GT-V (which is N/A) has same suspension as GT-T, otherwise standard GT has the softer suspension (and also smaller rims, and probably other differences).

[R34GTFOUR]

GT-V (which is N/A) has same suspension as GT-T, otherwise standard GT has the softer suspension (and also smaller rims, and probably other differences).

i was talking about valve springs, not suspension coil springs

[SKY-LINER34]

Hi all,

I would like to confirm the different on the R34 GTT and R34 N/A i've check out my mate's car which is a TT on the dash it have HICAS, Slip, TCS display, when on my N/A 34 it dosen't do that mean i dont have these feature?

If anyone have the spec fact sheet for both these cars?

Cheers

[N-DAWG]

R34 GT doesn't have HICAS (4 wheel steering) Traction Control (TCS) or Limited Slip Diff (LSD)

[Vik]

How can i get a LSD installed.

Ive seen a nismo one on NENGUN for 1.8k .. how would i install it.

MRXTCZ

[SKY-LINER34]

really, then why dose it show on my mate 34 GTT dash?

[GTS4WD]

How can i get a LSD installed.

Ive seen a nismo one on NENGUN for 1.8k .. how would i install it.

MRXTCZ

You gotta drop it out of the car.

To do that you need drop drift shaft, prop shaft.

Open up the housing.

And change the gears.