TwinTurbo.NET: Nissan 300ZX forum - Looks pretty good. Hope the "after" shot of the left port
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Subject Looks pretty good. Hope the "after" shot of the left port
     
Posted by SlicktopTT on September 25, 2006 at 1:40 PM
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In Reply To Heads Porting posted by NitroPow on September 25, 2006 at 11:32 AM
     
Message does not show a "nick" to the valve seat. Hard to tell from the pic.

I would knife edge the throat where the two ports become one on both the intake and exhaust.

Good to leave the intake rough and polish the exhaust. I would also polish the combustion chamber to help reduce chances of detonation.

Finally, port match the head to the exhaust gasket but port the exhaust manifolds slightly larger than the gasket so you get an anti-reversion lip.

Good job so far.

     
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