Understanding few members might have issues withour discontinued turbochargers sold between 2006~2009, those are mainly the imported TR25, TR28 and TR28KAI models. I have been sorting and still happy to offer discounted repairing services.
All turbochargers of ours now are build in Australia with all engineering work done by qualified and experienced local engineers.
During those years most of my time and efforts has been spent in developing and building RB based turbochargers, mainly in the field of high flowing and bolton applications. We have made couple of very good turbos, the venture is on going, successful, with lots of experiences earned.
Our SAU RB based turbocharger development thread is at:
Back to topic.
The level of performance on my current T2x based turbochargers are to be improved, more specifically in working with SR20dets engines. The goal is creating a bolton replacement, that can produce reasonably good power and response working with ordinary engines using commonly available mods.
Ensuring a successful out come, I have purchased a S14.5 with engine hardware built by Forced Motorworx and body restored by Motorware.
Because SR20det's output can vary significantly due to the type of cams used as well as other generalized mods such as exhaust, intercooler, induction and so fourth. Results and comments below are only referring to what I currently have, my performance related modifications are:
BC Stage 2 cams, VCT has been cancelled.
Drift Exhaust manifold (low mount)
RAS (rocker arm stoppers)
Garrett 30-71 Turbocharger in .64 rear housing. Note this is the proper GT3071 with a 60mm turbine, not the Cropped 56mm version.
700cc Nismo injectors
Custom air box with K&N filter
PWR radiator and intercooler (intercooler is inside engine bay so no chassis cutting)
Spit fire coil packs
Varex exhaust system
100cell race cat
Z32 Air Flow Meter
Gizzmo boost controller
The GT3071 might have been a choice for members whom's targeting outputs between 230~260rwkws. This particular one has maxed at 257rwkws peeking 21psi of boost on P98 fuel.
Even thou the peek power is acceptable for the size of this turbocharger, I found it is horribly laggy to drive. So it has been replaced with a turbocharger that I've engineered earlier for RB20det motors: The ATR43SS1 Billet version. A T2x turbine housing was selected for the OEM manifold and dump, knowing the standard .64 rear might be restrictive, a .86 A/R sized housing with a large 38mm internal gate has been machined to suit.
Car was dynoed again very soon after. Making 258rwkws peeking 22psi. Not much gain in power, how ever the boost response is now improved, so is the down low power and torque:
The car is now better to drive on the road compare to what it was. I'm in the process of further evaluations with a customized T2x turbocharger based on my opinions in improving its current performance. Results in addition will be uploaded once evaluations conducted.
Edited by HyperGear, 12 January 2014 - 10:39 AM.