SHORT HEAD

We prepared simple short cylinder head as base of tuning. 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 valve springs.

BASIC TYPE

* The BASIC type was discontinued.

Cylinder head (brand-new OEM) / Intake valve (brand-new OEM) / Exhaust valve (brand-new OEM) / Valve spring (brand-new OEM) / Valve retainer (brand-new OEM) / Valve rubbing / Installing valve and spring

EX TYPE

Cylinder head (brand-new OEM) / Intake valve (brand-new OEM) / Exhaust valve (brand-new OEM) / Valve spring (brand-new OEM) / Valve retainer (brand-new OEM) / Uprated valve spring (if we have it) / Ti valve retainer (if we have it) / Racing valve guide (if we have it) / Port and polish / Adjusting volume of combustion chamber / Polish surface of cylinder head / Valve rubbing / Installing valve and spring

* The above article are typical parts and processing. Parts and processing will be different with each engine model.

  • SHORT HEAD
    JUN SHORT HEAD for HONDA K20A

JUN SHORT HEAD
Engine Type Part # MSRP(yen) Remarks
NISSAN
VR38DETT BASIC 7502M-N003discontinued Camshafts are contained.
EX 7502M-N004ASK
VQ35DE BASIC 7502M-N005discontinued  
EX 7502M-N006ASK
VG30DETT BASIC 7502M-N007discontinued  
EX 7502M-N008ASK
RB26DETT BASIC 7502M-N009discontinued  
EX 7502M-N010ASK
RB25DET BASIC 7502M-N011discontinued  
EX 7502M-N012ASK
SR20DET BASIC 7502M-N013discontinued  
EX 7502M-N014ASK
TOYOTA
2JZ-GTE BASIC 7502M-T001discontinued  
EX 7502M-T002ASK
1JZ-GTE BASIC 7502M-T003discontinued  
EX 7502M-T004ASK
7M-GTE BASIC 7502M-T005discontinued  
EX 7502M-T006ASK
3S-GTE BASIC 7502M-T007discontinued  
EX 7502M-T008ASK
4A-GE BASIC 7502M-T009discontinued  
EX 7502M-T010ASK
HONDA
C30A BASIC 7502M-H009discontinued  
EX 7502M-H010ASK
H22A BASIC 7502M-H011discontinued  
EX 7502M-H012ASK
F20C BASIC 7502M-H013discontinued  
EX 7502M-H014ASK
K20A/DC5 BASIC 7502M-H001discontinued  
EX 7502M-H002ASK
K20A/FD2 BASIC 7502M-H015discontinued  
EX 7502M-H016ASK
B18C-R BASIC 7502M-H003discontinued  
EX 7502M-H004ASK
B16B BASIC 7502M-H005discontinued  
EX 7502M-H006ASK
B16A BASIC 7502M-H007discontinued  
EX 7502M-H008ASK
MITSUBISHI
4B11 BASIC 7502M-M005discontinued  
EX 7502M-M006ASK
4G63/MIVEC
(Evo9/CT9A)
BASIC 7502M-M001discontinued  
EX 7502M-M002ASK
4G63
(Evo5-8)
BASIC 7502M-M003discontinued  
EX 7502M-M004ASK
4G63
(Eclips)
BASIC 7502M-M007discontinued  
EX 7502M-M008ASK
SUBARU
EJ20K
(GC8)
BASIC 7502M-F001discontinued  
EX 7502M-F002ASK
EJ207
(GDB)
BASIC 7502M-F003discontinued  
EX 7502M-F004ASK
EJ25# BASIC 7502M-F005discontinued  
EX 7502M-F006ASK
MAZDA
B6-ZE BASIC 7502M-Z001discontinued  
EX 7502M-Z002ASK
BP-ZE BASIC 7502M-Z003discontinued  
EX 7502M-Z004ASK

VR38DETT SHORT HEAD with Camshaft

  • SHORT HEAD
  • SHORT HEAD
  • SHORT HEAD

BASIC TYPE

FEATURING

  • New Nissan OE Head
  • New Nissan Intake and Exhaust Valves
  • New Nissan Valve Springs
  • New Nissan Valve Retainers
  • Valve Lapping and Cleaning
  • Installing Valves and Springs
  • JUN High Lift Camshafts
  • Adjusting tappet clearance (lifter)

EX TYPE

FEATURING

  • New Nissan OE Head
  • New Nissan Intake and Exhaust Valves
  • JUN Uprated Valve Springs
  • JUN Titanium Valve Retainers
  • JUN Improved Valve Guides
  • Intake and Exhaust Port and Polish
  • Combustion Chamber Machining
  • Valve Seat Cutting and Stem Heights Adjusting (0.1mm or less)
  • Head Surface Grinding
  • Valve Lapping and Cleaning
  • Installing Valves and Springs
  • JUN High Lift Camshafts
  • Adjusting tappet clearance (lifter)

SR20 SHORT HEAD

  • SHORT HEAD
  • SHORT HEAD

BASIC TYPE

FEATURING

  • New Nissan OE Head
  • New Nissan Intake and Exhaust Valves
  • New Nissan Valve Springs
  • New Nissan Valve Retainers
  • Valve Lapping and Cleaning
  • Installing Valves and Springs

EX TYPE

FEATURING

  • New Nissan OE Head
  • New Nissan Intake and Exhaust Valves
  • JUN Uprated Valve Springs
  • JUN Titanium Valve Retainers - Type 2
  • JUN Improved Valve Guides
  • Enlarged Exhaust Port
  • Intake and Exhaust Port and Polish
  • Enlarging Valve Seats and Polish
  • Combustion Chamber Volume Adjustment and Polishing (0.3cc or less)
  • Valve Seat Cutting and Stem Heights Adjusting (0.1mm or less)
  • Head Surface Grinding
  • Valve Lapping and Cleaning
  • Installing Valves and Springs

K20A SHORT HEAD

  • SHORT HEAD
  • SHORT HEAD

BASIC TYPE

FEATURING

  • New Honda OE Head
  • New Honda Intake and Exhaust Valves
  • New Honda Valve Springs
  • New Honda Valve Retainers
  • Valve Lapping and Cleaning
  • Installing Valves and Springs

EX TYPE

FEATURING

  • New Honda OE Head
  • New Honda Intake and Exhaust Valves
  • JUN Uprated Valve Springs
  • JUN Titanium Valve Retainers - Type 2
  • JUN Improved Valve Guides
  • Enlarged Exhaust Port
  • Intake and Exhaust Port and Polish
  • Enlarging Valve Seats and Polish
  • Combustion Chamber Volume Adjustment and Polishing (0.3cc or less)
  • Valve Seat Cutting and Stem Heights Adjusting (0.1mm or less)
  • Head Surface Grinding
  • Valve Lapping and Cleaning
  • Installing Valves and Springs

B16B/B18C-R SHORT HEAD

  • SHORT HEAD
  • SHORT HEAD

BASIC TYPE

FEATURING

  • New Honda OE Head
  • New Honda Intake and Exhaust Valves
  • New Honda Valve Springs
  • New Honda Valve Retainers
  • New Honda Valve Stem Seal
  • New Honda Valve Cotter
  • Head Cleaning and Inspection (Vacuum check etc.)
  • Head Surface Grinding
  • Valve Lapping and Cleaning
  • Installing Valves and Springs

EX TYPE

FEATURING

  • New Honda OE Head
  • New Honda Intake and Exhaust Valves
  • JUN Uprated Valve Springs
  • JUN Titanium Valve Retainers - Type 2
  • JUN Improved Valve Guides
  • New Honda Valve Retainers
  • New Honda Valve Stem Seal
  • Intake and Exhaust Port and Polish
  • Enlarging Valve Seats and Polish
  • Combustion Chamber Volume Adjustment and Polishing (0.3cc or less)
  • Valve Seat Cutting and Stem Heights Adjusting (0.1mm or less)
  • Head Cleaning and Inspection (Vacuum check etc.)
  • Head Surface Grinding
  • Valve Lapping and Cleaning
  • Installing Valves and Springs

4G63 SHORT HEAD

  • SHORT HEAD
  • SHORT HEAD

BASIC TYPE

FEATURING

  • New Mitsubishi OE Head
  • New Mitsubishi Intake and Exhaust Valves
  • New Mitsubishi Valve Springs
  • New Mitsubishi Valve Retainers
  • Head Surface Grinding
  • Valve Lapping and Cleaning
  • Installing Valves and Springs

EX TYPE

FEATURING

  • New Mitsubishi OE Head
  • New Mitsubishi Intake and Exhaust Valves
  • JUN Uprated Valve Springs
  • JUN Titanium Valve Retainers - Type 2
  • JUN Improved Valve Guides
  • Intake and Exhaust Port and Polish
  • Enlarging Valve Seats and Polish
  • Combustion Chamber Volume Adjustment
  • Valve Seat Cutting and Stem Heights Adjusting
  • Head Surface Grinding
  • Valve Lapping and Cleaning
  • Installing Valves and Springs