TwinTurbo.NET: Nissan 300ZX forum - Mystery slot
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Subject Mystery slot
     
Posted by 1308cats on March 15, 2016 at 4:34 PM
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Message Does anyone have any ideas as to the purpose of the wedge shaped slot that is located at the bottom dead center of the throttle body and the TB bore in the plenum? It doesn't seem to have any purpose when the butterfly is closed. Can I fill it in both places? Would I need to relocate if I did? Since it is really close to the water pipe that runs under the TB, my best guess is that it helps TB warm up to be quicker. Why do I want to know? Because I eliminated warming tubes and removed the "dimples" on the plenum leaving not a whole lot of stock for the TB gasket.Thanks for any thoughts/suggestions.

     
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