Description

Tomei Head Gasket for 4G63

 

PRODUCT INFO

APPLICATION BORE THICKNESS P/N MATERIAL STRUCTURE
4G63
Evo.4-9
φ86.5
 1.0mm 1352865101
Metal
Super Grommet
1.2mm 1352865121
1.5mm 1352865151
1.8mm 1352865181

 

FEATURE / SPEC

■ SUPER GROMMET DESIGN

The sealing performance has been improved considerably with the super grommet to suit these engines and has been proven to deliver excellent reliability.

SUPER GROMMET TYPE

The dual sealing method of the bead structure & metal grommet, provides maximum sealing for the coolant, oil & gases around the bore circumference.

 

■ Durable stainless steel made

The bead top pry is made of durable but flexible SUS301.
High heat radiation character of SUS301 helps transferring heat of the head and the block to coolant efficiently and prevents heat spots which causes gasket blow.
SUS301 is also known for its tensile strength and it helps the beads to keep sealing the head and cylinder which repeat heat expansion and shrink all the time. This structural strength also improves torsional rigidity of the whole engine by improving coupling rigidity of the head and the block.

■ ABOUT MARKING

All our metal head gaskets are laser marked with Models, Bores, Thickness, and TOMEI POWERED INC. company name.
Since there are similar/counterfeit goods on market, please make sure logos on Gasket.

 

Sample Compression Ratio

●4G63(EVO IV – VII)
GASKET PSITON STD PSITON TOMEI (2.2L) PSITON TOMEI (2.3L)
φ86.5 φ85.0 φ85.5 φ86.0 φ85.5 φ86.0
1.0mm Approx.8.6 Approx.8.7 Approx.8.8 Approx.9.2 Approx.9.3
1.2mm Approx.8.5 Approx.8.6 Approx.8.7 Approx.9.1 Approx.9.2
1.5mm Approx.8.4 Approx.8.5 Approx.8.9 Approx.9.0
1.8mm Approx.8.2 Approx.8.3 Approx.8.7 Approx.8.8

Values of the sample compression ratios are calculated out based on the factory spec data.
Adjustment of the compression ratio must be based on the measurement of the actual engine.