Aiming For 280 Rwkw

[R31Nismoid]

^^ but that weight sits further forward, so in effect more of a chance as the SR sits further back so distributes the weight much better.

Outright weight isnt the be all/end all

[discopotato03]

I remember someone I trust telling me that an RB in an S13 weighs about as much as an RB in an R32 GTST .

Your call but the R32 is going to have better suspension and an RB six out of the box , hoiking an RB20 for an RB25 has to be a heap simpler than an SR20 for an RB25 .

Your call but I'd reckon everything about an R32 is going to be cheaper than a 180SX in the long run .

It depends on what you like the look of I suppose , I'd go for the functionality personally .

If you must stay with an S13 you could look into better fours for the purpose ie a KA24DE and turbocharge that .

They are long in the stroke compared to an RB six but they make great mid range torque - particularly with a turbocharger . The US has RWD manifolds for them because they had USDM 240SX's with the KA24DE engine std .

We got a DOHC RWD version of in in Aus spec Navara 2.4's . They are 8.6 to 1 CR std so reasonable for a cheap conversion + local compliance .

Luckily the KA24 has the full circle bellhousing pattern which I think is the same as an SR20 so they probably fall into an S13 , they obviously did into USDM S13's and S14's .

The Navaras have a V6 version as well and with a bit of mucking around with bellhousings you could possibly get an RB25DET sized gearbox into your S13 .

JWT (Jim Wolf Technology) in the US do cams/manifolds/pistons/cracked flashed ECU's etc etc for KA24E (SOHC) and KA24DE (DOHC 16v) engines . From memory injectors are the exact same side feeds as R33 RB25DET's so I'm pretty sure the Nismo's etc fall in .

It won't rev like an RB25 or an SR20 but if you can make killer mid range torque with four large cylinders who cares ?

Very lastly , they use an iron block so no need to screw around with liners like in an SR20 . Can't remember about fitting piston oil squiters - you'd have to got to the US sites for that info .

Four cylinder car with four cylinder engine , it's what I'd do in an S13 .

A.

[toffy]

ecu

550cc inj

imo : td06 l2 20g

fuel pump

cooler

zorst

[MissTara]

now this is what im talking about, thankyou so much people. main reason of going down the RB path is i already know quite alot about it and also have an RB25 in my 33. Im sure with a good suspension setup you can overcome the engine weights. ive already said im not interested in an SR, i know it would be more practical but i like the RB25 so im going to stick with it. It's was either going to be a 25 or 2J, but i dont have the skills myself to do a 2J conversion, as like doing everything myself. Thaks for all the replys, helping me get an idea of each components power range/output. Good stuff.

[MissTara]

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.

cheers for the info manwhore, lol.. well, basically i just came up with a number in my head. A mate has a 250kw RB25 in his S13, i liked the torque, took it for a drive and loved the way it felt over the SR. so i just thought it'd have to be a little better, but if 250kw is a better approach than im sure that will be fine. Yeah i wasnt really interested in building the engine for that power output, but i guess its the chance we take when pushing the limits. So if it lasts long enough on 250-280kw then im sure a couple years down the track id look at rebuilding. and im sure if i spend the extra cash and get a great tune from a well know tuner then it would be well worth it.

[wolverine]

well if you only want 250rwkw = HKS GT-RS = GCG Hi-flow = GT3071

[bigcarl]

try the gt3071 500hp garrett turbo with a/r.63 internal wastegate from gcg turbos in sydney. good for up to 280rwkws . see diagram. other supporting mods set of tomei pon cams 252degrees inlet and exhaust with 8.5mm lift. 550cc/min injectors bosche 044 fuel pump. large 600x300x80mm front mount intercooler. stock pipeing to plenum. 3inch turbo back exhaust. link plus ecu.

[Kranker]

if you want a bit more response maybe look at a GT2871R-10 (GT-RS equiv) or more room for later improvement maybe a GT3071R (ive only got my head round the Garrett and HKS ranges so cant comment on other brands)

from what you can see, support mods are prettymuch a known quantity.

turbo choice is the really hard part

[mattysaidso]

doesnt gcg make a .7x variant aswell? same as simon_r32's old setup?

i have a hks 2835pro s kit going on mine, though my aim is around 250kw but keeping the boost down to around 14-15psi

matty

[MissTara]

hmm your right kranker, down to turbo choice. basically once i have that sorted, i'll either get HKS or tomei cams, which ever one works better with the right turbo.

[Abo Bob]

RB sounds better than SR, that's why she wants to do it.

[joeyjoejoejuniorshabadoo]

i would go for a 2835 pro s...

its what i'm running and is just unbeleivable....

i have 265rwkw (creatd dyno) with an exhaust cam gear to bring the powerband down for response... so its a possible 275rwkw'ish (some have up to 285rwkw on PULP) but as i said... response... i'm gonna go e85 as soon as i get datalogit and aim for 300rwkw

full boost from just below 3500 all the way to the 7400 redline. that's 4000 revs of full boost in every gear.

if i choose i can fry the tyres from 0 till its off the clock... just need to flatshift... and with a 4k powerband that's easy as!

with cams and the exact same setup bombtrack has 275rwkw but his boost hits about 700 rpm later... so its a little bit less of a powerband but still WAAAAY acceptable.

car is also running:

nismo 555 injectors

nismo fuel pump

z32 afm

apexi super induction pod in cold air box with 2.5" cold air pipe

hybrid fmic

power fc

blitz dsbc spec s ebc

unknown clutch... but its holding up to numerous 6k sidesteps (free score from japan )

3" zorst with decat pipe

+ a well sorted suspension setup.

[MANWHORE]

This sounds very similar to the OP6 highflow setup I referred to above (power and response).

The car honestly scared the bejezus out of me the first time I drove it after tuning. It was that responsive that it felt like a standard turbo. In the dry with 255 rear tyres, it was like going for a skid in the wet

The car was tuned with a bit of toluene added so it made more power and torque than other cars running this turbo with standard 98 octane. E85 should be even better again.

i would go for a 2835 pro s...

its what i'm running and is just unbeleivable....

i have 265rwkw (creatd dyno) with an exhaust cam gear to bring the powerband down for response... so its a possible 275rwkw'ish (some have up to 285rwkw on PULP) but as i said... response... i'm gonna go e85 as soon as i get datalogit and aim for 300rwkw

full boost from just below 3500 all the way to the 7400 redline. that's 4000 revs of full boost in every gear.

if i choose i can fry the tyres from 0 till its off the clock... just need to flatshift... and with a 4k powerband that's easy as!

with cams and the exact same setup bombtrack has 275rwkw but his boost hits about 700 rpm later... so its a little bit less of a powerband but still WAAAAY acceptable.

car is also running:

nismo 555 injectors

nismo fuel pump

z32 afm

apexi super induction pod in cold air box with 2.5" cold air pipe

hybrid fmic

power fc

blitz dsbc spec s ebc

unknown clutch... but its holding up to numerous 6k sidesteps (free score from japan )

3" zorst with decat pipe

+ a well sorted suspension setup.

[Dunno]

my old 33 had 273 at the wheels it didnt have to much done heres a pic. I hope my new one does better

[Gus-]

ima get killed for saying this but

either keep the SR...280 is quite realistic with some good bolt ons...good torque etc etc.

or

2jz...put it in and you'll be laughing. i honestly wouldn't bother with a RB25

zomg did he just say that.,