View Full Version : Supra and Skyline TT info.
10-06-02, 09:02 PM
OK guys, Im new to these forums, and this is my first tech post.
Im after some info on the turbos fitted to TT supras and GTR skylines.
firstly what size are the turbos? what is the standard boost level? and how much power do the engines make standard?
Im after turbos that will support around 200kw at reasonably low boost on my falcon (4.1 EFI), preferably standard fitment so I can pick them up for a good price second hand at importers.
thanks for any help you guys can give me.
10-06-02, 09:49 PM
you need 2 T28's off a GTR.
Supra's turbos are not suitable due to the wastegate setup.
10-06-02, 09:55 PM
Remember that these turbo's are on 2.6 & 3.0l motors, they will be too small for your 4.1l motor. There has already been a few threads on this, do a search for more info. My thoughts are look at it as if you had 2x2.0l motors. Pick a turbo from a factory 2l motor that performs well & is cheap, get 2 of them & off you go. If you want more performance, look at what turbo's are good upgrades for the original 2l motor. Eg. to give heaps of upgrade options, get 2xRB20 turbos, they have a t3 flange & you can get RB25DET or VG30DET turbo's (or even t3/4 hybrids!) later. Of course I have oversimplified it a fair bit, but you get the general idea.
Good luck. :)
10-06-02, 10:07 PM
dont know if this is what your after as I only know abt the local cars....but
-GTR Skyline single turbo....Engine Code RB26DETT and Power 209kW .
-Mitsubitshi 3000gt twin turbo
Power 210kW @ 6000rpm
Torque 407Nm @ 3000rpm
-Porsche(might be a lil expensive) 1996 3.6Twin turbo
Power 300kW @ 5750rpm
Torque 540Nm @ 4500rpm
-Celica 1995 2.0L turbo
hope it helps
10-06-02, 10:08 PM
Why are they too small?? This guy wants 200Kw, he has a old school falcon motor(Non OHC). These things don't like to rev.
If they are a tad small, try some SR20 T28's
10-06-02, 10:26 PM
TRD - Opps, I missed the 200kw bit. :o Your point about the motor not liking revs it totally valid too. Maybe I'm too tired?
11-06-02, 01:09 AM
thanks guys, I realise the engines I would be sourcing the turbos from dont rev as hard, I want boost to come on at pretty low RPM, and the old 12 valve 4.1 only revs to 4500 so I guess the airflow would be similar to a multivalve 2.5 or 3 litre which goes to around 7000.
I was thinking of GTR turbos, these are T28? are they ball bearing etc?
and also what is the problem with the wastegate setup on the supra items? I believe these mount on the correct side of the engine for my application, just that little easier to mount up.
supra turbos are sequential, possibly a lot harder to get working on your car. gtr turbos are T25/T28 with a tiny exhaust for good spoolup but not BB. my guess is they would work well, with really good low rev torque.
The Supra turbo's CAN be made to work as a simultainless(spelling:D ) system,just like the GTR ones.
You just gotta open up some valves;)
BUT then youve got lag:mad:
11-06-02, 08:57 PM
I was under the impression that the primary turbo on a 2JZGTE has no wastegate, as all excess gas is re-routed to the secondary turbo???
If this is the case then it will be useless of rota_motor's application.
11-06-02, 09:55 PM
hey guys I actually thought the supra turbos were simultaneous rather than sequential, are the soarer turbos the same setup?
11-06-02, 10:01 PM
2JZGTE turbos are "2 way twin turbo" ie sequential
1JZGTE turbos are Simultaneous
Both are CT12's but the 2J has Ct12b's and 1J's have CT12a's
In JDM spec they are ceramic turbine, slipper bearing and water cooled.
you are correct,only 1 wastegate.
But on a supra you can get it to work as a simultaneous system,by opening up a valve that controls it all.
I have it working on mine that way,but its a bit lagy.
This is all good for the supra,due to the manifold design,but using these turbos on the ford would not be good,but then again,you could make a custom manifold with external wastegate..but a big waste in my opinion.
If i was doing it,i would go for a nice single turbo,...just as good and cheaper and neater.
12-06-02, 02:30 AM
OK thanks guys, the general thing seems to be a single would be the easier option, just was thinking maybe able to adapt the supra 1J type turbos to the ford, but if not.
Does anyone know of any JDM cars with turboes able to support around 200kw @ the fly at low boost?
12-06-02, 09:40 AM
...there was 4.1 falcon ute in Zoom where they bolted 2 BB RB20 turbos onto the stock engine and got some really good performance out of it, not sure of the exact numbers but easily 200kw I'd say - I picked up 2 RB20 ball bearing turbos for $400 the pair so they are cheap. They're your best option I believe.
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