NISSAN GT-R

JUN 420GTR and JUN AKIRA GT-R

JUN 420GTR ENGINE DISPLACEMENT 4162cc 987.2ps/7180rpm : 126.79kg-m / 5000rpm
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JUN AKIRA GT-R ENGINE DISPLACEMENT 3996cc 869.5ps/6650rpm : 106.62kg-m / 4330rpm
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PRODUCT LIST

  • SHORT COMPLETE ENGNINE

SHORT COMPLETE ENGINE

This short complete engine is a high performance engine which was combined with a JUN Short Head and JUN Short Block. The JUN Short Head was done high precision machining needed as tuning engine. And the JUN Short Block was built in the Custom Kit EX 4.0L, and cylinder liners for expansion cylinder.

4.0L SHORT ENGINE MSRP:ASK

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SPECS
BORExSTROKE:
96.0mmx92.0mm
DISPLACEMENT:
3996cc
COMP.RATIO:
8.7 : 1
Camshaft:
272-10.8
Valve spring:
JUN Reinforced
Valve retainer:
JUN Titanium (Type2)
Valve guide:
JUN PBB
Head gasket:
Stock t=0.7mm
Piston:
JUN Forged Al (4.0L Kit)
Rod:
JUN I-Beam (4.0L Kit)
Crankshaft:
JUN Billet (4.0L Kit)
Cylinder:
Cyln. Linder
Bearings:
Stock
  • SHORT HEAD
  • SHORT HEAD
  • SHORT HEAD

SHORT HEAD

The short head has two kinds for your driving stages. The BASIC type was done minimum processing for adjusting uneven quality of factory parts. And, the EX type incorporated special parts and processing recommended by JUN. These are pre-assembled head which was put together until camshafts.

BASIC TYPE discontinuedyen

EX TYPE MSRP:ASK

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  • SHORT BLOCK
  • SHORT BLOCK
  • SHORT BLOCK

SHORT BLOCK

This short block built in the Custom Kit EX 4.0L. And, it puts in the cylinder liner for expansion cylinder. We assembled the short-block by the most suitable clearances which has safe margin on the high revolution.

EX TYPE MSRP:ASK

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SPECS
BORExSTROKE:
96.0mmx92.0mm
DISPLACEMENT:
3996cc
COMP.RATIO:
8.8 : 1 (gkt=0.7mm)
Piston:
JUN Forged Al (4.0L Kit)
Rod:
JUN I-Beam (4.0L Kit)
Crankshaft:
JUN Billet (4.0L Kit)
Cylinder:
Cyln. Linder
Bearings:
Stock
  • CUSTOM KIT EX 4.0L
  • SHORT BLOCK

CUSTOM KIT EX 4.0L

This Custom Kit for VR38DETT expands engine displacement by enlarged bore and stroker. The engine displacement is 3996cc.

MSRP: JPY1,944,000yen

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* This kit require to install cylinder liner.

SPECS
BORExSTROKE:
96.0mmx92.0mm
DISPLACEMENT:
3996cc
COMP.RATIO:
8.8 : 1 (gkt=0.7mm)
  • FORGED ALUMINUM PISTON KIT

FORGED ALUMINUM PISTON KIT

The stock bore size piston kit will be able to install stock cylinder without boring and honing machining. This piston was made from the excellent forged material same as the piston so far. So, it will be able to say as the high-end piston which can show durability and performance more than enough for the high spec engine of VR38DETT.

R-Series

95.5mm / 96.0mm --- MSRP: JPY259,200yen

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  • I-BEAM CONNECTING ROD

I-BEAM CONNECTING ROD

The JUN connecting rod is made by shaving in order to pursue lightness and strength, this form has no futility. The material of a connecting rod is used SCM440. And connecting rod bolts are made by ARP. If big end is transformed at the time of high rotation, a metal will burn. In order to prevent the phenomenon, it was made the form which distributes stress.

MSRP: JPY210,600yen

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  • CYLINDER LINER

CYLINDER LINER KIT

Since VR38DETT is an aluminum block engine surface-treated by plasma spraying, oversized piston can not be assembled by the usual method. By inserting this liner in the cylinder it becomes possible to incorporate more pistons than the stock bores. We line up cast iron liners that can handle various bore sizes and aluminum liners with target bore narrowed down. Please use them for assembly of oversized piston, upward displacement or block regeneration.

CAST IRON 95.5-96.0mm

Dry liner MSRP: JPY194,400yen

ALUMINUM 96.0mm / 98.0mm (Nikasil plating)

Wet liner MSRP: JPY432,000yen

Dry liner MSRP: JPY432,000yen

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  • HIGH LIFT CAMSHAFT

HIGH LIFT CAMSHAFT - BOLT-ON SERIES

This camshaft can use with your stock computer. And, you don't need to change your stock valve spring. This camshaft is a so-called the bolt-on camshaft. Although the vehicle ups the torque by exchanging the camshaft only, it will be able to get more power if you upgrade intake / exhaust parts and boost-up on the ECU. Our test vehicle displayed plus 100 whp

Bolt-on Camshaft Series: 256/264-10.3mm

MSRP: JPY45,360yen

Regular Camshaft Series: 272-10.8mm

MSRP: JPY51,840yen

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* The camshaft which is 10.4mm or higher lift of the profile cannot use together with stock valve spring.

  • REINFORCED VALVE SPRING SET

REINFORCED VALVE SPRING SET

Close adhesion between coil line will occur when the stock valve spring use together with high lift camshafts in a Nissan VR38DETT engine. Even if the coil line thin prepare as the simple way of solving it, it doesn't show enough load and strength. So, we designed special valve spring to get enough load and strength with thick coil line, and also designed special (offsetting) valve retainer. This valve spring set is a product which is including specail valve spring and special valve retainer (Type2).

MSRP: JPY194,400yen

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  • REINFORCED VALVE GUIDE

REINFORCED VALVE GUIDE

The JUN Racing Valve Guide is improved its strength and heat conduction by using raw material, phosphorus-bronze. This therefore avoid the any damage from high rotation of tuned engine. We recommend our valve guides when you overhaul your cylinder head.

Phosphor bronze JPY45,360yen

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  • CYLINDER HEAD BOLT

* The pictures are for the other vehicle.

REINFORCED HEAD BOLT

The high-boost and high-compression engine tends to occur distortion between the cylinder head and the cylinder block as a junction part of combustion chamber. We are providing the product which is supplied from ARP Racing USA.

Stud type JPY151,200yen

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  • CRANK MAIN CAP STUD

* The pictures are for the other vehicle.

REINFORCED CRANK MAIN CAP BOLT

Crankshaft is one of the crucial part that have weighing by combustion power that changed rotation. Crank Main Cap Stud Bolt is a shaft bearing part of crank shaft that fixes a block and a cap connecting together. If this part gets thermal expansion a crank housing could not be kept in circular shape and it could be possible to get scorching. We are providing the product which is supplied from ARP Racing USA.

Stud type JPY45,360yen

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  • GT SURGE TANK

GT SURGE TANK

The stock surge tank is short of ability when your engine became high power. The capacity of the collector tank uprated 200% compared with stock surge tank. Moreover, it increased the power and torque from low-middle speed until high rev. It was achieved by extended length of intake manifold and by made funnels inside the collector tank. The position of throttle body was moved from stock position but can install it easily by a little modification of the intake pipe. And, it doesn't interfere with bonnet hood. You will be able to get more power by using together with the our big throttle body.

MSRP: JPY615,600yen

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  • BIG THROTTLE BODY

BIG THROTTLE BODY

This product expanded 2mm diameter which was considered balance between performance and durability. And, the throttle body inside wall was regrind. Moreover, the butterfly spindle was made thin for reducing inhalation resistance. We can also machine your throttle body you sent.

Machining your throttle body

MSRP: JPY108,000yen

Including brand-new throttle body

MSRP: JPY237,600yen

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  • TURBINE KIT

GT3076R TURBINE KIT

This turbine kit will big upgrade Nissan GT-R (R35). Your R35 will get power extremely beyond the stock turbine by using Garrett turbochargers.
Choose the turbochargers from GT3076R or GTX3582R.

Setup Kit MSRP: JPY1,080,000yen

Garrett GT3076R MSRP: ASK

Garrett GTX3582R MSRP: ASK

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  • * The price of setup kit is not including turbochargers. Choose turbochargers when you purchase. We estimate the cost of turbochargers when you ask.
  • RADIATOR RESERVOIR TANK

RADIATOR RESERVOIR TANK

The stock radiator reservoir tank is made from plastic. This product will improve durability and atmosphere of engine room by replacing to the aluminum product. Partitions were made inside the tank to prevent the mixture of the air. The level gauge placed on outside. It was made from stainless steel which is able to withstand high pressure and high temperature. The radiator cap which is 1.5 km/cm2 opening pressure is attached.

MSRP: JPY73,440yen

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  • RADIATOR CAP

RADIATOR CAP

This radiator cap uprates the pressure of release valve. That result, boiling point of coolant is raised by increases pressure of piping. By this, it raises the cooling efficiency of the radiator, and will repress overheat.

Type S (1.3, 1.5kg/cm2)
Type N (1.3kg/cm2)

MSRP: JPY3,024yen

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  • OIL FILLER CAP

OIL FILLER CAP

Aluminum shaving oil filler cap with JUN logo will produce the engine room sporty. There are five colour variations; purple, gold, red, blue and silver.

MSRP: JPY9,180yen

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  • INTAKE DUCT
  • FRONT LIP SPOILER
  • SIDE DIFFUSERS
  • REAR UNDER DIFFUSERS
  • REAR GLASS GARNISH
  • MUFFLER DUCTS

EXTERIORS

There are the original aero parts by JUN. They have the beautility and the impressive appearance.

Intake Bumper Duct: JPY57,240yen

Carbon Front Lip: JPY66,960yen

Carbon Side Diffusers: JPY86,400yen

Carbon Rear Under Diffusers: JPY64,800yen

Carbon Rear Glass Garnish: JPY56,160yen

Carbon Muffler Ducts: JPY41,040yen

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  • UNIVERSAL FRONT DIFFUSER
  • UNIVERSAL FRONT DIFFUSER

UNIVERSAL FRONT DIFFUSER

An air pocket in central part amplifies incoming air from bottom of front bumper temporarily and the compressed air quickens speed, and it is drained behind your vehicle. Strakes before front wheels reduce turbulence by the tires, and the air deflects to center of vehicle. The quickened air makes down force occur through bottom of vehicle. Moreover by the type of vehicle, this diffuser has effect which lowers water and intake temperature because it pulls out heat from engine room.

FRP MSRP: JPY47,520yen

CARBON MSRP: JPY90,720yen

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  • SHORT COMPLETE ENGINE
  • SHORT HEAD
  • SHORT BLOCK
  • CUSTOM KIT EX 4.0L
  • FORGED ALMINUM PISTON KIT 95.5mm
  • I-BEAM CONNECTING ROD
  • CYLINER LINER
  • HIGH LIFT CAMSHAFT
  • REINFORCED VALVE SPRING SET
  • REINFORCED VALVE GUIDE
  • REINFORCED HEAD BOLT
  • REINFORCED CRANK MAIN CAP BOLT
  • GT SURGE TANK
  • BIG THROTTLE BODY
  • TURBINE KIT
  • RADIATOR RESERVE TANK
  • RADIATOR CAP
  • OIL FILLER CAP
  • AERO PARTS
  • EXTERIORS

JUN 420GTR

  • MAY 2015 SPEC CHART

MAY 2015

BASIC DATA

Car Name
JUN 420GTR
Model
R35
Engine Type
VR38DETT
Boost
196.13kPa (2.0kg/cm2)
MAX Power
726.1kW (987.2ps) / 7180rpm
MAX Torque
1243.4N-m (126.79kg-m) / 5000rpm

ENGINE

Bore x Stroke
98.0mm x 92.0mm
Engine Displacement
4164cc
Camshaft
JUN 68(272)-10.8 (INT&EXH)
Valve Spring
JUN Reinforced Valve Spring Set
Valve Retainer
JUN Titanium Valve Retainer (including JUN Valve Spring Set)
Piston
JUN Forged Aluminum (Custom Kit EX 4.2L (Prototype))
Connecting Rod
JUN I-Beam (Custom Kit EX 4.2L (Prototype))
Crank shaft
JUN Billet (Custom Kit EX 4.2L (Prototype))
Head gasket
Stock

EXTERNAL ENGINE

Throttle
SPL 80mm
Inlet Manifold
JUN GT Surge Tank
Exhaust Manifold
JUN Exhaust Manifold (including JUN Turbine Kit)
Turbine
JUN Turbine Kit with Garrett GTX3076R x 2
Muffler
GReddy Power Extreme-R
Radiator
Stock, JUN Radiator Reservoir Tank
Intercooler
GReddy Spec-R HG Type29
Air Cleaner
GReddy Airinx B type
Injector
1200cc
Fuel Pump
SARD

CONTROLLER and ELECTRIC

Engine ECU
Cobb Accesstuner pro
Boost Controller
Trust Profec Boost controller

DRIVE TRAIN

Clutch
Dodson Pro max clutch kit
Transmission
Dodson ED6GS Gear set
LSD/ Diff Ratio
F&R Stock.

SUSPENSION and BRAKE

Suspension
ENDLESS ZEAL Super FUNCTION
Tire name/Size
DUNLOP GT600 RSST F:285/35-20 R:285/35-20
Wheel name/Size
ADVAN Racing GT Premium F:20x10.5J+ R:20x11J
Brake (F&R)
Endless MX72 PAD

EXTERIORS

Exterior
JUN Front Lip Spoiler, JUN Intake Duct, JUN Side Diffuser, JUN Rear Diffuser, JUN Rear Glass Garnish, JUN Muffler Duct, SARD GT Wing

INTERIORS

Interior
Stock

MAY 2015

Comparison graph with the stock turbo charger

JUN AKIRA GT-R

  • DEC 2011 SPEC CHART

DEC 2011

BASIC DATA

Car Name
JUN AKIRA GT-R
Model
R35
Engine Type
VR38DETT
Boost
176.52kPa (1.8kg/cm2)
MAX Power
648.4kW (869.5ps) / 6650rpm
MAX Torque
1045.6N-m (106.62kg-m) / 4330rpm

ENGINE

Bore x Stroke
96.0mm x 92.0mm
Compression Ratio
8.7 : 1
Engine Displacement
3996cc
Camshaft
JUN 68-10.8 (INT&EXH)
Valve Spring
JUN Reinforced Valve Spring Set
Valve Retainer
JUN Titanium Valve Retainer (including JUN Valve Spring Set)
Piston
JUN Forged Aluminum (Custom Kit EX 4.0L)
Connecting Rod
JUN I-Beam (Custom Kit EX 4.0L)
Crank shaft
JUN Forged (Custom Kit EX 4.0L)
Head gasket
Stock

EXTERNAL ENGINE

Throttle
JUN Big Throttle Body
Inlet Manifold
JUN GT Surge Tank
Exhaust Manifold
JUN Exhaust Manifold (including JUN Turbine Kit)
Turbine name
JUN GT3076R Turbine Kit
Muffler
SARD Center pipe, HKS Muffler
Radiator
Stock, JUN Radiator Cap
Intercooler
GReddy
Air Cleaner
GReddy
Injector
Stock
Fuel Pump
Stock.

CONTROLLER and ELECTRIC

Engine ECU
JUN

DRIVE TRAIN

Clutch
Stock.
Transmission
JUN Upgrade Gear Box
LSD/ Diff Ratio
F&R Stock.

SUSPENSION and BRAKE

Suspension
ENDLESS ZEAL FUNCTION A
Tire name/Size
DUNLOP F:255/40ZRF20 R:285/35ZRF20
Wheel name/Size
YOKOHAMA F:10Jx20 R:11Jx20
Brake (F&R)
RH9 400mm disc F&R

EXTERIORS

Exterior
JUN Front Lip Spoiler, JUN Intake Duct, JUN Side Diffuser, JUN Rear Diffuser, JUN Rear Glass Garnish, JUN Muffler Duct, Sun Line Racing GT Wing

INTERIORS

Interior
Stock

DEC 2011

Comparison graph with the stock turbo charger

M7-JUN GT-R

  • JAN 2010 SPEC CHART

JAN 2010

BASIC DATA

Car Name
M7-JUN GT-R
Model
R35
Engine Type
VR38DETT Stock
Boost
1.3kg/cm2
MAX Power
612.8ps / 6400rpm
MAX Torque
87.08kg-m / 3880rpm

PARTS LIST

Camshaft
JUN 64-10.3 (INT&EXH)
Injector
Stock
Engine oil
M7 Pro racing oil 1000HP, M7 GT performance oil filter.
Oil catch tank
M7 super cooling oil catch tank.
Turbine name
Stock.
Boost controller
M7 E-BC, Off : 0.5k Low :1.0k High : 1.3k
Waste-gate
M7 Tune up actuator.
Inter-cooler
M7 Competition Type-R Intercooler kit.
ETX Manifold
Stock.
Muffler
M7 F-Titan sports muffler & Center pip (No2, CAT less).
Radiator
Stock, M7 super cooling radiator cap.
Air Cleaner
M7 Super power flow filter universal ×2.
Engine ECU
M7 Rom.
Fuel Pump
Stock.
Clutch
Stock.
Transmission
Stock.
LSD/ Diff Ratio
F&R Stock.
Brake (F&R)
M7 Brake system forged mono block 6 pot kit.
Tire name/Size
BS stock
Wheel name/Size
M7
Suspension
M7 High performance damper kit.
Interior
M7 Racing seat Takeshi-Tuchiya model FRP (RH&LH).
Bride seat stay, TAKATA seat belt,
M7 Super performance throttle controller.
Memo
Transmission cooler

JAN 2010

Compares the stock R35 GT-R