most powerfull RB25DET !

[sik32]

I was wondering does anyone know of the most powerfull RB25DET in Australia or even some very powerfull ones in japan etc, Has to still be 2.5 L doesnt matter what engine mods internal bolt ons, just after some recorded figures maybe dyno sheets or info from mags, just lookin to see who owns the record, thanks heaps for the help

Keep on boostin

[cameron]

Theirs lots of potential out their.

Just a couple off the top of my head,

OBHVE R33 - 386rwkw's 518hp

JMS R33 - 448rwkw's 601hp

Twin turbo RB25 Silvia - 355kw's

A fair few guys on here have 300kw + GTS-T With RB25's in them some with aftermarket internals some with standard internals.

Im sure theirs more powerful RB25 engines than above that havn't been seen to the public. It also comes down to $$$ aswel

But at the end of the day horsepower figures will only tell the truth on the 1/4 mile.

Jun

[N I B]

near anything an RB26 can do an RB25 can also.

[B-Man]

If you do a search, I asked the same thing a while back !

[Maxx]

the jms R33 448rwkw was a dyno failure, the car actually did around 380rwkw with racing juice and low 300rwkw with pump. I saw it got tune again and run after 1,2 weeks after the autosalon.

[klh6686]

I know this isn't japan or australia but Fito shows in this thread over at www.nissaninfiniticlub.com. its pretty impressive if you ask me.

[B-Man]

From the thread:

MOD LIST:

- NEO RB25 (year 98+)

-Greddy intake plenum

-75mm mustang throttle (to be upgraded by a 83mm infiniti one)

-Greddy Type R S14 intercooler with 3in. piping

-custom exhaust header (ceramic coated)

-Presicion Turbo T-67 (front polished, rear ceramic coated)

front: .70ar with a 66 turbine

Rear: .69ar with a P trim turbine

-Turbonetics racegate

-HKS blow-off valve

-850cc injectors

-aeromotive fuel press. regulator

- Walboro 255 in-tank fuel pump

- Fuel canister (to maintain fuel volumen)

-Bosch porsche fuel pump ( after the canister)

-custom fuel rail

-Rb25 stock tranny

-exedy dual disk cluth

-nismo differential

-3in down pipe and 3in exhaust (no cat.)

-Microtech fuel injection computerEngine is totaly stock internals, for the exeption now of a power enterprise head gasket and ARP head studs.

587HP @ 26psi

I need more convincing that what is in that thread

[B-Man]

Having said that and a bit of research on this Turbo

(look here: http://www.precisionturbo.net/turbocharger...ategory_id=3027)

The Presision T-67 is rated at 780HP

Thats one big F'off turbo.

That'd be one laggy ho

[predator]

the jms R33 448rwkw was a dyno failure, the car actually did around 380rwkw with racing juice and low 300rwkw with pump. I saw it got tune again and run after 1,2 weeks after the autosalon.

yeah, always have to be careful of dyno figures, especially from "workshop" cars funnily enough.

anywhere from 250-300rwkw is fairly "standard" these days... quite a few getting around australia with these figures.. .could probably name about 10 on here with those figures alone

The question is - what fails first? and what are the inherent weaknesses when pushing past 300rwkw ?

[RNS11Z]

Hardcore Racing have built an r33 which made 670rwhp on c16 & nitrous. I believe its using an innovative turbo.

[geno8r]

Anyone with a 280 rwkw+ r33 GTST then please post their car, details, & dyno sheet then.

See how many people are making the big power.

[Kaido_RR]

near anything an RB26 can do an RB25 can also.

sooo ture

pauly here in perth made around the 450 - 500rwhp mark running stock rb25 cams

[hungry6]

i got 420rwhp of an rb25 using a gt35 with pistons as only internal upgrade, as for bolt on the list starts here and goes to over ---------------> there, but it did lasted for a fairwhile until i drove a true 800+ hp rb26 monster.

[BU5TER]

my thoughts on what fails first are the ringlands on stock pistons that is

[geno8r]

Thats very nice hungry6.... Who else has big rwhp RB25s....

I know a guy who runs 430 rwhp on stock internals, stock cams, makes that power from a big topmount T04 @ 20psi. Wouldnt want to be running that too often tho.

[krzysiu]

Denhams (INASNT) car is running a respectable 324Kw on stock internals

[cameron]

A member on here Steve has 321rwkw's on stock internals.

http://www.skylinesaustralia.com/forums/sh...ht=results+3037

[lwells]

This isn't meant to sound provocative, but I am tired so I apologise in advance if it does sound that way.

near anything an RB26 can do an RB25 can also.

Is that really saying much though? Throw enough money at most half-decent engines are you can extract significant power.

How does it break down in terms of bang-for-buck (ignoring initial purchase price)? Surely the RB26 starts with an advantage?

LW.

[hungry6]

VERY TRUE!!! well said.

[bretto]

ive got a mate with a neo6 in a 180, its currently making 290rwkw detuned. if he ever gets it finished ill post the end figure up. yet to come is bigger fuel lines (still using stock s13) bigger throttle body and cams. no point in posting what is expected so ill wait till it makes the power befor saying anything else.