TwinTurbo.NET: Nissan 300ZX forum - have you had problems with your motor??
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Subject have you had problems with your motor??
     
Posted by CRAZZEPETE. on January 26, 2006 at 10:26 AM
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In Reply To Sgp/Kyle/Mark-TT heads swapped for N/A heads posted by eriksu9 on January 26, 2006 at 08:35 AM
     
Message I'm just wondering since it doesn't say so. I've never dealt with SGP, and don't know much about building a VG30, but if they ground the numbers, maybe they did the porting as well. It sounds like if they just threw on NA heads with out doing the porting, changing the valves, springs, and guides, that the heads wouldn't support the kind of pressure needed with high boost.

More facts about the motor would help.

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