All three types are durable against the high engine output. Stopper structure of the bore seal is designed to be a separated type to prevent leakage even under high gas-pressure at high engine output.
Special coating was applied on the head and cylinder side to improve sealing performance when tightening the bolts.
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.)
The t=0.7mm type utilizes a stopper taller than the t=0.5mm type to provide higher bore seal durability. With a stock pistons, the compression ratio is reduced only by 0.1; it allows to maintain high heat efficiency.
Installing the t=1.0 type gasket to a vehicle with the supercharger enables to adjust the compression ratio of Capacity Upgrade Kit; setting range can be widened.
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