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.

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

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.

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.

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

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

* 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

This piston kit will be able to install easy with stock cylinder by boring and honing, because the bore diameter is larger by only 0.2mm than stock piston. 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.

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.

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

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

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).

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. In the cast iron valve guide, we kept quality but cheaper than stock valve guide which is rather expensive lately. We recommend our valve guides when you overhaul your cylinder head. We recommend our valve guides when you overhaul your cylinder head.

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.

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.

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 GT3076R.

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.

EXTERIORS

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