Turbo's - Above about 1.1 bar the stock RB26 turbos have a tendency to break the exhaust wheel off. People have gone low 12's, high 11's on the stock turbos, but not for long. Stock peak boost R32 is about 0.8 , R33 0.9, R34 1.0. The R35 GT-R uses an IHI turbo, with an integrated exhaust manifold.

 

GT-R Wastegate operation and vacuum diagram

Turbo lag

Turbo lag Excel document

R35 GT-R turbos - IHI RHF55 same as MY06 STi Impreza

Turbocharger Type RHF55
Turbine Blade no. 11
Compressor Blade no. 6 + 6
Turbine Rotor Size 53mm / 48mm
Compressor Rotor Size 60mm / 46.5mm
Max. Turbine Speed 165000 rpm
Wastegate Open Press. 78 kPa
A/R Ratio 15
Compressor seal material Synthetic mica + Teflon
Bearing Type Floating Metal Bearing

 

Estimated power outputs for various turbos


Turbocharger wheel sizes - Thanks to http://www.gtr.co.uk

This turbo is instantly worth $400 more.

HKS turbochargers

TurboOutputCompressor WheelCompressor HousingTurbine WheelExhaust Housing

PSTrimInducer (mm)Major (mm)Inlet (mm)Outlet (mm)A/RTrimMajor (mm)Exducer (mm)Inlet FlangeOulet FlangeA/R
GT-SS2806046.660.1

0.607653.847GT25Internal - GT250.64
GT25103006347.760.160500.60625341.7GT25Internal - GT250.64
T3Internal - Skyline Type0.64
GT25303206347.760.160500.607653.847GT25Internal - GT250.64
T3Internal - Skyline Type0.64
GT25353405651.66960500.607653.847GT25Internal - GT250.64
0.86
T3Internal - Skyline Type0.64
GT25403504651.776.260500.607653.847T3Internal - Skyline Type0.64
GT2540R3604651.776.270500.507653.847GT25Internal - GT250.64
3700.86
GT-RS4005251.271.160500.607653.847GT25Internal - GT250.64
GT28353804849.371.170500.508456.551.8GT25Internal - GT28 84 trim0.64
0.86
4005251.271.170500.50External - GT300.61
0.73
0.87
4105653.171.170500.501.01
1.12
GT2835Pro4205653.171.1100500.508456.551.8T3GT-Pro Type0.68
GT2835ProS4205653.171.1100500.508456.551.8T3GT-Pro Type0.68
0.87
GT2835R4205653.171.1100500.509056.553.6GT25Internal - GT28 90 trim0.86
External - GT300.61
0.73
0.87
1.01
1.12
GT3037ProS480565776.2100500.60846055T3GT-Pro Type0.68
0.87
480565776.2100500.608460551JZ (VVT-i)GT-Pro Type0.68
0.87
GT30374204852.876.270500.60846055GT25External - GT300.61
440525576.270500.600.73
470565776.270500.600.87
GT3037S450525576.2100500.601.01
480565776.2100500.601.12
GT3040500505882100600.70
GT32405805460.382100600.70845458.7GT25External - GT300.87


Garrett bolt on turbochargers

Garrett GT-RS equivalent

2871-10

Compressor Map

2860-5

Garrett 2530 equivalent

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2860R_707160_5.htm

Garrett N1 equivalent

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2860R_707160_7.htm

http://homepage.ntlworld.com/tbroom/Turbos.htm

Apex - IHI turbochargers

AX TURBINE/RX6B TURBO CHARGER statistics chart
MODELBearing system

Supercharging pressure

Control control equipment

Correspondence with 1 machine

Output (PS)

Compressor wheelCompressor housingTurbine wheelTurbine housingActuator
Trim

Entrance diameter

(Mm)

Major diameter

(Mm)

Entrance diameter

(Mm)

Exit diameter

(Mm)

A/R

(Mm)

Trim

Major diameter

(Mm)

Exit diameter

(Mm)

Entrance flangeExit flange

A/R

(Mm)

Material

Pilot by-pass

Diameter (mm)

Type

Set pressure

(MmHg)

AX53B60STDBall bearingActuator340574660φ 60φ 5019825348T25SR20 exclusive use (S14)22High silicon26STD570
25
13.4 T25RB26 exclusive use1826570
21
20EJ20 exclusive useEJ20 exclusive use2024570
Racing13.4 T25RB26 exclusive use18ニレジスト D5S27Strengthening type750
21
AX53B70STDBall bearingActuator380575370φ 60φ 5019825348T25SR20 exclusive use (S14)22High silicon26STD570
25
13.4 T25RB26 exclusive use2126570
19T3RB20/25 exclusive use2224570
25
19EJ20 exclusive useEJ20 exclusive use1824570
Racing19T25SR20 exclusive use (S14)22ニレジスト D5S28Strengthening type750
25
RX6BTCW15Ball bearingWest gate440485478φ 70φ 6021876157RX6BRX6B13High silicon---
TCW10500575978φ 70φ 602187615716
TCW76L520475682φ 75φ 63.52187615718
TCW77L560556182φ 75φ 63.52187615720
TCW76LS520475682φ 90φ 63.52187615722
TCW77LS560556182φ 90φ 63.52187615725











27
AX75F82STDFloating metalWest gate640616482φ 100φ 6017.8 7674.1 64.5 T4 and 1 portInserting type inside diameter φ 73, major diameter φ 90.525High silicon---
AX75F92STDFloating metalWest gate730506592φ 100φ 6017.8 8974.1 70T4 and 1 portInserting type inside diameter φ 73, major diameter φ 90.525High silicon---

* As for the AX53B series turbine specification differs each every kit.
The RX6B series has set conformity turbine size each every kit.
Each commodity concerning details please inquire.

Rollover date 03/07/11
Name APEX CO. and LTD.

Croydon Wholesalers R32. Big turbo.

Ran 8.55 like this with nitrous in first gear only

GT42R - 16psi - R32 GT-R