This is Hiro Sakane's R34 GT-T, that is being built for the Queensland Time Attack Series.The plan is to keep it road registered & streetable, but with a strong engine and driveline that will perform at the track. We will be using parts from HKS, Nismo and Apexi and Motul fluids throughout. The base car is a 1999 white, 2 door coupe with a standard RB25DET, with the dyno showing 205HP ATW with the original modifications of a HKS exhaust and BMC Air Filter.
The parts list going into the build includes a HKS GT-RS Turbo kit that will be low mounted on the existing manifold, Apexi Power FC, HKS EVC Boost Control, Nismo 480cc injectors, Nismo Spark Plugs, Nismo High Pressure Fuel Pump, Nismo Fuel Pressure Regulator, Nismo Coppermix Clutch and to get the power to the ground, a Nismo GT LSD TT 2-way.
Ivan at Hi Power Racing at Slacks Creek it looking after the build, with his work shop famed for the Time Attack CRX and more recently, the JUN powered S15 HPR Drifter.
The build: Day 1 - 8/4/10
Driving up the M1 to HPR
HPR
The JUN SR20 in the HPR S15
Goodies from HKS
Ivan with the HKS GT-RS
HKS GT-RS
HKS EVC
All the new parts laid out, ready for installation
Day 2: 9/4/10
Gearbox out and old clutch assembly removed
New Nismo Coppermix Clutch & Flywheel
Gearbox out
Diff out
GT LSD fitted
Flywheel fitted
Clutch assembly bolted into place
Day 3 12/4/10
So while I was at the workshop yesterday, the CF card in my camera exploded. Luckily, my trusty camera phone was there for backup.
LSD & gearbox are now bolted back in, factory turbo is out & HKS GT-RS is in!
Turbo out
Old & new side by side
Turbo fitted
Day 4 - 13/4/10
Exhaust is now back in with the new down pipe.
Factory restriction
No more restriction here!
Diff back in place
HKS GT-RS fitted
Day 5 - 14/4/10
Exhaust is now complete
Front bar off
Old SMIC removed
Factory intercooler
HKS cooler
Mocking up fit
Installed, piping to follow!
Day 6 - 15/4/10
1 can of VHT = stealth intercooler
Intercooler is all plumbed in now, the injectors are next, also got the Defi gauges installed
The guys were also tuning the S15 for the upcoming World Time Attack, such a beast.
and the Apexi Power FC finally turned up!
Day 7 - 16/4/10
IT'S ALIVE!
Everything is back together and the Power FC is in! Terry calculated a basic tune and she kicked over first time!!!
Unfortunately we can't get it on the dyno today, but come Monday, we will be on the rollers and find out what gains we made!
Day 8 - 19/04/10
Getting tuned at the moment, that should be finished in the next hour or so. From about 4pm, we're going to wind it up for some power runs!
Day 9 - 20/04/10
330HP ATW!!!
Here are the dyno sheets, the first three show the actual tune with a steady power curve. The last one is in shootout mode, just going for big numbers.
On the final pic, the green line shows where we started and the red line is the current output. Pretty happy with that.
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26 May 2010
After a shakedown at QR, we found that the factory inlet to the turbo was heating up and constricting, limiting air flow. So Ivan and the guys at Hi Power Racing manufactured a new inlet pipe and here are the results.
To say that we are pleased would be a massive understatement!
377.8HP @1.5 bar.
We have also started on the suspension, replacing the links & bushes with Nismo items.
The red front bar is just to keep it all legal until the new one arrives!
The front links are now in and the rear cradle is out!
15/7/2010
The new bodykit has arrived! We ended up going with a Blits kit, so new front, rear, sides & bonnet with a set of Z-Tune guards to finish the look!