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Aiming For 280 Rwkw

MissTara

By MissTara,
in Engines & Forced Induction

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MissTara Enthusiast

MissTara

Posted
Posted

Hey guys, I'm thinking of putting an RB25DET into my 180sx. I found one through my work, it's a series 2 engine with 65,00kms. Now to cut straight to the question. My power goal will be 280rwkw basically just want to know what parts would be neeed. Im aware i'll need certain parts, but what i mean is what size injectors, to work with what turbo, cams, ecu ect. Basically a dream list of parts that i can lash out and buy. Now i dont think i'll want to push beyond 280rwkw, so id want the most responsive turbo that can hit that goal, with aid of cams+gears. I have read the RB25 upgrade thread but its hard to get a good idea cause most people buy parts that are cheap and whatever is for sale at the time. if that makes sence, smart tech guru's need only reply please! thankyou for your help.

Tara-

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cuppas Community Regular

cuppas

Posted
Posted

fuel pump haha

are you planning on dropping in the RB ecu with it?

also... is there any special reason for the RB25? wouldnt SR20 swap be easier to undertake and engineer?

im assuming that if you can find an RB through work, you can find a good SR...

MissTara Enthusiast

MissTara

Posted
  • Author
Posted (edited)

if you read my post you would see that i already read the RB25 turbo upgrade thread, how do i know what the person is aiming for even if there dyno graph is 280kw? i asked a simple question. I dont want another SR20. I was asking about the RB25DET. And i work at a mechanical workshop so getting blue plates and what not will not be an issue. Should have just asked on ns.com, just thought the crew here may know a little more about RB25's.. Obviously not.

Also, why would i (drop) the std ecu in with the RB25 if im asking about aftermarket parts? So no, i will not be using the std ecu, most likely get a powerFC.

Edited by MissTara
zebra Grand Master

zebra

Posted
Posted
if you read my post you would see that i already read the RB25 turbo upgrade thread, how do i know what the person is aiming for even if there dyno graph is 280kw? i asked a simple question. I dont want another SR20. I was asking about the RB25DET. And i work at a mechanical workshop so getting blue plates and what not will not be an issue. Should have just asked on ns.com, just thought the crew here may know a little more about RB25's.. Obviously not.

Also, why would i (drop) the std ecu in with the RB25 if im asking about aftermarket parts? So no, i will not be using the std ecu, most likely get a powerFC.

ok byebye then.

OBVIOUSLY its too hard to read up on what other people have done or reccomend

W0rp3D Grand Master

W0rp3D

Posted
Posted
i don't know how you managed to give such a strait out answer, must have been hard! ha! anyway, thanks.

Im going for similar power except im going for 300-350rwkw, only real difference for you is smaller turbo and injectors.

You could also go a walbro 255 fuel pump, its cheaper but i have heard mixed stories about them so im sticking with the ol faithfull 040.

MANWHORE Grand Master

MANWHORE

Posted
Posted (edited)

280 rwkw is a tricky figure. Is there a reason why you have selected 280 rwkw as opposed to 250rwkw or 300 rwkw?

The reason I ask is while it is definitely possible to make more than 250 rwkw on a stock motor (I've done it as have numerous other forum members), I would not want to do it for an extended period of time on a stock motor for reliability purposes.

280rwkw is tricky because it is more than I'd be comfortable running on the stock motor and probably not quite enough to justify building a motor. E.g. if I was going to build a motor, I'd whack a slightly bigger turbo on and aim for 300+.

If you tune the car to run on E85 (high octane), you should be able to get 280 rwkw using a highflow rb25 turbo with the larger OP6 rear housing from the VG30 turbo.

A car that I helped build managed more than 280 rwkw with the highflow I mentioned using tolulene added to standard 98 BP ultimate. E85 should be able to produce even more power.

Edited by MANWHORE
W0rp3D Grand Master

W0rp3D

Posted
Posted

cams for 280? there are many people getting 300 with stock cams, maybe add adjustable cam gears though.

Clutch will be needed, tyres are optional after all she did say she was going to drift it :P and of course suspension will be part of the drift set up, not a part required to get 280rwkw which is purely the question i answered thats why i left out clutch (and i didnt think of it at the time).

engo Rising Star

engo

Posted
Posted

hks gtr-s

3 1/2 zaust high flow cats

550cc injectors

044 fuel pump

exedy brass/cusion button clutch

front mount (with nice silicon joins and heavy duty clamps)

ebc (greddy profec b spec II)

microtech ECU :) (people will dispute this, but no BOV and your dosing)

maybe chuck an oil coiler around there some where

suspension (tein or HSD coilovers)

diff

and that 180sx will skate like its on ice :) :)

funkymonkey Grand Master

funkymonkey

Posted
Posted

280rwkw is easily achievable on an SR20, why on earth would you want to put an RB25 in there other than to make your car nose heavy and for bragging rights? Retaining an alloy SR20 block as opposed to a cast iron RB25 block is worth the extra power you'll have to make to compensate for the added weight.

Seriously, save the time and money you'd waste on shoehorning an RB25DET in and make a bulletproof SR20DET.

W0rp3D Grand Master

W0rp3D

Posted
Posted (edited)

im no race car expert but im guessing with the extra weight over the nose it would also make it understeer which is definitely not some thing you want in a drift car.

Edited by W0rp3D

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