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

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-N003JPY738,720 Camshafts are contained.
EX 7502M-N004JPY954,720
VQ35DE BASIC 7502M-N005JPY518,400  
EX 7502M-N006JPY614,520
VG30DETT BASIC 7502M-N007JPY590,760  
EX 7502M-N008JPY885,600
RB26DETT BASIC 7502M-N009JPY415,800  
EX 7502M-N010JPY727,920
RB25DET BASIC 7502M-N011JPY443,880  
EX 7502M-N012JPY619,920
SR20DET BASIC 7502M-N013JPY326,160  
EX 7502M-N014JPY548,640
TOYOTA
2JZ-GTE BASIC 7502M-T001JPY456,840  
EX 7502M-T002JPY726,840
1JZ-GTE BASIC 7502M-T003JPY437,400  
EX 7502M-T004JPY613,440
7M-GTE BASIC 7502M-T005JPY461,160  
EX 7502M-T006JPY601,560
3S-GTE BASIC 7502M-T007JPY332,640  
EX 7502M-T008JPY457,920
4A-GE BASIC 7502M-T009JPY482,760  
EX 7502M-T010JPY610,200
HONDA
C30A BASIC 7502M-H009JPY764,640  
EX 7502M-H010JPY915,840
H22A BASIC 7502M-H011JPY295,920  
EX 7502M-H012JPY500,040
F20C BASIC 7502M-H013JPY282,960  
EX 7502M-H014JPY409,320
K20A/DC5 BASIC 7502M-H001JPY297,000  
EX 7502M-H002JPY496,800
K20A/FD2 BASIC 7502M-H015JPY297,000  
EX 7502M-H016JPY496,800
B18C-R BASIC 7502M-H003JPY287,280  
EX 7502M-H004JPY488,160
B16B BASIC 7502M-H005JPY222,480  
EX 7502M-H006JPY491,400
B16A BASIC 7502M-H007JPY280,800  
EX 7502M-H008JPY491,400
MITSUBISHI
4B11 BASIC 7502M-M005JPY191,160  
EX 7502M-M006JPY444,960
4G63/MIVEC
(Evo9/CT9A)
BASIC 7502M-M001JPY274,320  
EX 7502M-M002JPY453,600
4G63
(Evo5-8)
BASIC 7502M-M003JPY203,040  
EX 7502M-M004JPY460,080
4G63
(Eclips)
BASIC 7502M-M007JPY203,040  
EX 7502M-M008JPY342,360
SUBARU
EJ20K
(GC8)
BASIC 7502M-F001JPY237,600  
EX 7502M-F002JPY421,200
EJ207
(GDB)
BASIC 7502M-F003JPY352,080  
EX 7502M-F004JPY561,600
EJ25# BASIC 7502M-F005JPY260,280  
EX 7502M-F006JPY432,000
MAZDA
B6-ZE BASIC 7502M-Z001JPY308,880  
EX 7502M-Z002JPY434,160
BP-ZE BASIC 7502M-Z003JPY320,760  
EX 7502M-Z004JPY423,360

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