the current grey micras original stock engine thats blown up used this gasket. i think when the original forged engine had blown it used the same soft graphitey gasket.
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the new remachined forged engine i'm gonna fit has been fitted with genuine nissan headgasket, never had a prob with these
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in summary i conclude that the genuine headgasket has always been alot stronger & reliable than any cheaper 3rd party graphite/composite type.