Product Name

METAL HEAD GASKET FA20 T=0.5

MSRP

$340.00


Specifications

Product Code
23001-AT002
WEIGHT(kg)
0.44
NO. OF BOX
1
LENGTH (mm)
505
WIDTH (mm)
260
HEIGHT (mm)
260

Available for


Make
SCION
Model
FR-S
Years
2013-2016
Engine
FA20
Chassis
ZN6
Drive Train
RWD

Make
SUBARU
Model
BRZ
Years
2013-2020
Engine
FA20
Chassis
ZC6
Drive Train
RWD

Make
TOYOTA
Model
86
Years
2017-2020
Engine
FA20
Chassis
ZN6
Drive Train
RWD

Remarks

Product: STOPPER TYPE HEAD GASKET, Thickness (mm): 0.5, Compression Ratio: ε=12.6, Bore: D89.5, For NA, LH/RH each, opposed bead stopper type



HKS

Opposed Bead Stopper Type Metal Gasket for the FA20 engine of 86/BRZ provides higher bore sealing durability than a stock gasket.
2 types of the gasket are available. One is t0.5 increased compression ratio type for an NA engine (ε12.6←12.5, supercharger installable, Endurable approximately 300ps)and another type is t0.7 high engine output type for a supercharged engine (ε12.4←ε12.5, Endurable approximately 600ps with supercharger)

 

■Feature

<POINT-1> With t=0.5mm gasket, NA engine's compression ratio increases compared with the stock!
The durability of the bore seal of this gasket t=0.5mm for NA engine is improved, and the compression ratio increase compared with the stock that makes this gasket ideal for one-make race. (This gasket can be installed to a supercharged engine.)
Compression Ratio
Stock Thickness: t=0.6mm (ε12.5) HKS Thickness: t=0.5mm (ε12.6)

<POINT-2> Maintain a high seal with high pressure!
Both types are endurable against high engine output. Stopper structure of the bore seal is separated type so it prevents leakage even under high gas-pressure at high engine output.

<POINT-3> Contact surface pressure is improved!
Special coating was applied on the head side and cylinder side to improve sealing performance when tightening the bolts.

<POINT-4> Bore seal pressure was confirmed in figures. (See the diagram below.)
 

 

(Contact Surface Pressure Measurement)

23001-AT002_2.png

 

 

(Structure Comparison)

23001-AT002_3.png

  NA t=0.5
  * Comperd to stcok, bore seal is independent and has higher seal surface pressure,  therefore same amount of stopper, bore seal is stronger.
  * Thinner than stock and compression ratio is 0.1 highe

 

23001-AT002_4.png

  Supercharger t=0.7
  * Comperd to stcok, bore seal is independent and has higher seal surface pressure, therefore bore seal power is much stronger.
  * Thicker than stock and compression ratio is 0.1 less than stock

 

23001-AT002_5.png

  Stock t=0.6
  * Bore stopper is similar to the other seal and ther surface pressure polymerize, it has lower seal ability than the independent type

 

 

 

EngineThickness (mm)Compression RatioBoreCode No.ManualRemarks
FA200.5ε=12.6D89.523001-AT002 For NA, LH/RH each, opposed bead stopper type