Custom 3D Printed GTR Style Intake Plenum Project

Originally Posted by RanRich Is it just me or does the manifold appear to pinch at the front? Wouldn’t this variance in plenum size as it relates to each runner

		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust
Custom 3D Printed GTR Style Intake Plenum Project

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02-28-2018, 09:14 PM

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Cpt. Obvious

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Quote:

Originally Posted by RanRich

Is it just me or does the manifold appear to pinch at the front? Wouldn’t this variance in plenum size as it relates to each runner be problematic?

FPenvy is correct. The pinch at the front is designed to equalize the pressure in the manifold.
Being that the front intake ports are further away from the throttle bodies, the smaller size will slightly compress the air for the purpose of balancing the air pressure in each cylinder.

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