Stockish RB26 with N1 turbos, Tomei cast exhaust manifolds, HPI 76 mm outlet pipes.
Looking to boost the performance of your Nissan Skyline GT-R? Understanding the stock and aftermarket turbo options is crucial. This guide provides information on turbo upgrades for the iconic R32, R33, R34, and R35 GT-R models.
Mines MB7 engine with twin turbos
Stock RB26DETT Turbo Limitations (R32, R33, R34):
The legendary RB26DETT engine, found in the R32, R33, and R34 GT-Rs, came equipped with twin ceramic turbos. While capable of impressive performance, these stock turbos have limitations:
Ceramic Exhaust Wheel Failure:
Running boost levels above 1.1 bar (approximately 16 psi) significantly increases the risk of the ceramic exhaust wheel breaking off. This can lead to catastrophic engine damage.
Stock Boost Levels:
The stock peak boost levels for these models are:
R32 GT-R: Approximately 0.8 bar (11.5 psi)
R33 GT-R: Approximately 0.9 bar (13 psi)
R34 GT-R: Approximately 1.0 bar (14.5 psi)
Performance Potential:
While pushing the limits, some enthusiasts have achieved low 12-second and high 11-second quarter-mile times on stock turbos. However, this is not recommended for long-term reliability.
Product: RB26DETT Engine Parts – R1 Turbo Kit Part Num: 1441A-RSR45
SPECIFICATIONS: Compressor: – Housing: T3 (A/R 0.42) – Wheel: T3 (trim 55) Bearing: Ball bearing Turbine: – Housing: T25 (A/R 0.64) – Wheel : GT25 (trim 62) Actuator: Reinforced spring, adjustable rod Max. efficiency: 73% Max. air pressure ratio (at boost pressure): 103% (1.35kg/cm2) Designed output: 280PS(2)
PRODUCT NOTES: – For Skyline GT-R (BNR34) vehicles for N1 racing- Reinforced actuator set included (nozzle opening pressure: 635mm Hg/0.33mm, 760mm Hg/4.0mm)- One vehicle set (two turbo units)/exchange gaskets/necessary piping – Use of this product requires adjustment of boost pressure and engine control unit before use.
A Billet Compressor Wheel compared to a Cast Compressor Wheel offers NO GAIN in performance by its material alone. Some have argued that they can be made lighter for better spool, or that they can be made with more aggressive fin designed due to there better sheer strength. While that MIGHT be true, we have seen no conclusive evidence or study that has proven this so we have to rule it out for now and say it’s NOT FACTUAL even though it MIGHT be true.
Billet wheels CAN, again that is CAN, perform better. Because they can be a low production run of wheels, there flow and performance can be tailored to running a specific pressure ratio (PR) or to have a certain amount of peak flow, or surge line capability, or be able to jump on new blade design technology faster since there is no need to delay the technology getting to market because of setting up machining and tooling.
2024 Turbo chart. Inducer and Exducer sizes in mm. lb/min in airflow
As a general rule, a turbocharged gasoline engine can produce approximately 9.5 to 10.5 horsepower (at the flywheel) for every pound per minute (lb/min) of airflow. Therefore, to estimate the horsepower output based on airflow, you can multiply the airflow in lb/min by this range (9.5-10.5). For example, if your turbocharger flows 40 lb/min, you can expect to produce around 380 to 420 horsepower.
Inserting type inside diameter φ 73, major diameter φ 90.5
25
High silicon
–
–
–
AX75F92
STD
Floating metal
West gate
730
50
65
92
φ 100
φ 60
17.8
89
74.1
70
T4 and 1 port
Inserting type inside diameter φ 73, major diameter φ 90.5
25
High 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.
The following charts below are in no means scientific. They are done on different days, different cars, different setups. What we are looking at is overall ideas.
Many different turbos. Points picked from dyno charts and plotted
Same chart broken out to several old single turbo setups.
R35 GT-R
Standard
Spec V
HKS-TF
COMP
Trim
60T
60T
64T
IN（mm）
43.4
46.5
46.5
OUT（mm）
56
60
60
Number of blades
12
12
12
EXH
Trim
57T
82T
57T
IN（mm）
53
53
53
OUT（mm）
39.8
48
39.8
Number of blades
9
11
9 + cutback
edit-I am not sure this is the standard GT-R turbo, it specs out more like the SpecV turbocharger
Uses an IHI turbo, with an integrated exhaust manifold.
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
Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity. Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer NGK is the world's largest supplier of OEM spark plug… read more
The details interface only displays some car models. To view all car models, please click on the top of the interface"make sure this fits" Fitment1: Nissan 370Z Maxima Murano Pathfinder Quest GT-R Altima 350Z Frontier|SL 2003-2024|SV 2009-2024|S 2004… read more
【OE Standard】Our spark plugs meet or exceed OE specifications for form, fit and function and are perfect for automotive replacement spark plugs.Quick and easy installation, excellent and reliable performance. Premium spark plug kits are a quick and e… read more
.jpg)
%5B2%5D.jpg "turbo (1)")
![[Vehicle Fitment-1]: This automotive replacement spark plugs Compatible with INFINITI 2009 2010 2011 2012 2013 FX50 V8 5.0L, 2011 2012 2013 M56 V8 5.6L, 2014 2015 2016 2017 2018 2019 Q70 V8 5.6L, 2015 2016 2017 2018 2019 Q70L V8 5.6L, 2011 2012 2013 ...](https://m.media-amazon.com/images/I/51a4vf0j0NL._SL160_.jpg)
Leave a Reply