TwinTurbo.NET: Nissan 300ZX forum - The only reason to use non-OEM HG is if you are
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Subject The only reason to use non-OEM HG is if you are
     
Posted by AzHeat on January 17, 2007 at 12:28 PM
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In Reply To So whats the consensus on Cometic multi-layer steel HG? posted by BooZted on January 17, 2007 at 12:16 PM
     
Message using much larger than stock pistons to the point that the OEM is too small. The OEM HG as pretty strong.
I haven't seen the Cometics. Do they have silicon sealant around the water and oil hole area? If they do then you are fine. My old JUN metal HG did not and they leaked oil on one side. It was seeping out on one corner of the head.

     
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