Stock rb25 turbo on sr20det

Discussion of technical issues and ideas (engine, chassis)

Moderators: P3g4sus, Daniel, rat, Draco, Riekert

User avatar
k.y.l.e.
Over Boosting
Posts: 1122
Joined: Fri Jan 29, 2010 9:43 am
Car: S13
Engine: RB
Real Name: kyle
Location: Cape Town

Stock rb25 turbo on sr20det

Post by k.y.l.e. »

Hey guys had a t3/t4 turbo on my car and its sucks big time do not like the lag, i had a T28r on my car before the t3/t4 and man i enjoyed that turbo spooled up really quik and fun to drive as my car is an every day car and with the t3 the turbo spools to late, i managed to get a good condition stock rb25 and noticed it a t28 with a t3 exhaust flange, i have a top mount manifold so it bolts right on but would like to know if the turbo will boost late? And what rpm would the turbo start boosting as its only going to run on 4 cylinders as aposed to 6 cylinders.

Any help would be appreciated
My LuGnuts have more torque than your honda.
EX=toyota corolla 160i 93'model
Current car=s13 200sx with s14 motor sr20det v.v.t.

User avatar
Charlvdw
200SX Maniac
Posts: 3882
Joined: Wed Jan 09, 2008 10:08 am
Car: S13
Engine: SR
Location: Pretoria

Re: Stock rb25 turbo on sr20det

Post by Charlvdw »

I was planning to use one on my CA, but broke the ceremic shaft in whiles strugling to get the turbine housing off(be very carefull). I believe it would have worked well on the CA so it should spool very quick on a SR and i would definately try it.
197rwkw ,376nm

User avatar
rat
Administrator
Posts: 5378
Joined: Sat Jun 30, 2007 10:38 am
Car: R32
Engine: RB
Real Name: Rat
Location: Margate

Re: Stock rb25 turbo on sr20det

Post by rat »

You will have no lag. Don't boost more then 0.9
Hot Plates are Sexy

User avatar
Daniel
200SX Maniac
Posts: 2994
Joined: Tue Aug 01, 2006 1:39 pm
Car: S13
Engine: RB
Real Name: Daniël
Location: Centurion, Pretoria

Re: Stock rb25 turbo on sr20det

Post by Daniel »

Image
sig[/sig]

User avatar
rat
Administrator
Posts: 5378
Joined: Sat Jun 30, 2007 10:38 am
Car: R32
Engine: RB
Real Name: Rat
Location: Margate

Re: Stock rb25 turbo on sr20det

Post by rat »

Haha
Hot Plates are Sexy

SonOfAnarchy ZA
Administrator
Posts: 2512
Joined: Wed Aug 17, 2011 9:10 pm
Car: S13
Real Name: Jason
Location: JHB

Re: Stock rb25 turbo on sr20det

Post by SonOfAnarchy ZA »

Image
"I'd rather lose by a mile because I built my own car, than win by an inch because someone else built it for me"

User avatar
nirvash
1.0 Bar Boost
Posts: 1082
Joined: Tue Jan 12, 2010 9:38 pm
Car: S13
Real Name: Andreas
Location: Cape Town

Re: Stock rb25 turbo on sr20det

Post by nirvash »

@Daniel
hahaha :lol:

on a more serious note, my rb25 with the std turbo felt like little to no lag, seems like from about 2250rpm and you were away mabe less
i want 1 for my CA, or Sr if that happens...
good cost effective upgrade for ca/sr i think, will have nice response

only downside as rat stated is no boosting over 0.9bar, ceramic turbine..
Time to nut up or shut up. RB25DET S13 (sold)

Current. CA18DET S13
Image

SonOfAnarchy ZA
Administrator
Posts: 2512
Joined: Wed Aug 17, 2011 9:10 pm
Car: S13
Real Name: Jason
Location: JHB

Re: Stock rb25 turbo on sr20det

Post by SonOfAnarchy ZA »

why did the put a ceramic turbine in?
"I'd rather lose by a mile because I built my own car, than win by an inch because someone else built it for me"

User avatar
nirvash
1.0 Bar Boost
Posts: 1082
Joined: Tue Jan 12, 2010 9:38 pm
Car: S13
Real Name: Andreas
Location: Cape Town

Re: Stock rb25 turbo on sr20det

Post by nirvash »

lighter then steel for faster spooling
Time to nut up or shut up. RB25DET S13 (sold)

Current. CA18DET S13
Image

SonOfAnarchy ZA
Administrator
Posts: 2512
Joined: Wed Aug 17, 2011 9:10 pm
Car: S13
Real Name: Jason
Location: JHB

Re: Stock rb25 turbo on sr20det

Post by SonOfAnarchy ZA »

heard you don't need a cool down period either
"I'd rather lose by a mile because I built my own car, than win by an inch because someone else built it for me"

User avatar
k.y.l.e.
Over Boosting
Posts: 1122
Joined: Fri Jan 29, 2010 9:43 am
Car: S13
Engine: RB
Real Name: kyle
Location: Cape Town

Re: Stock rb25 turbo on sr20det

Post by k.y.l.e. »

Thanks for the replys guys heard if you go over 0,9 the ceramic turbine basicaly shits itself into pieces,so i was thinking ill go 0,7bar max on the turbo, any body know the thread pitch of the oil feed hole on the stock rb25 turbo?
My LuGnuts have more torque than your honda.
EX=toyota corolla 160i 93'model
Current car=s13 200sx with s14 motor sr20det v.v.t.

User avatar
k.y.l.e.
Over Boosting
Posts: 1122
Joined: Fri Jan 29, 2010 9:43 am
Car: S13
Engine: RB
Real Name: kyle
Location: Cape Town

Re: Stock rb25 turbo on sr20det

Post by k.y.l.e. »

SonOfAnarchy ZA wrote:heard you don't need a cool down period either
I dont know so much about that one hey, i still think it needs cool down time to prevent the oil from cokeing inside the turbo after a heavy run, i would not chance it.
My LuGnuts have more torque than your honda.
EX=toyota corolla 160i 93'model
Current car=s13 200sx with s14 motor sr20det v.v.t.

User avatar
RB25SX
Over Boosting
Posts: 1423
Joined: Tue May 06, 2008 4:38 pm
Car: R32
Engine: RB
Location: Somerset West

Re: Stock rb25 turbo on sr20det

Post by RB25SX »

T3/T4 with .48 exh housing spools up faster. See dyno print on SR20. This was the same car, same turbo, just different exh housings. T3 .48 and T3 .63.

Image
R32 GTR

User avatar
poizen
200SX Maniac
Posts: 2994
Joined: Sat Apr 12, 2008 2:05 pm
Car: S13
Engine: SR
Real Name: Mical Mackay
Location: Durban, New Germany

Re: Stock rb25 turbo on sr20det

Post by poizen »

i run a garret t3/t4 with 0.48 housing on sr20det full boost 1 bar at 3000rpm

great response

i think you just got any t3t4 turbo without matching it correctly
Image
Image
''enough rice to feed whole of china''

User avatar
poizen
200SX Maniac
Posts: 2994
Joined: Sat Apr 12, 2008 2:05 pm
Car: S13
Engine: SR
Real Name: Mical Mackay
Location: Durban, New Germany

Re: Stock rb25 turbo on sr20det

Post by poizen »

Image
Image
Image
''enough rice to feed whole of china''

Post Reply