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Ported Intake Manifold

mazda_lexus

Well-Known Member
204
53
Can someone explain to me what ported intake manifolds are? And how it's done? I see all these aftermarket ported manifolds but I don't know what it is and the benefit. I want to start planning my build and whether or not I'm going FI


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Flightmaster127

Supporting Member
VIP Member
3,601
2,370
Delaware
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Civic Si
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Sedan
Porting is simply the process of changing the size and shape of the intake runners in the intake manifold or the cylinder head to produce better airflow. More airflow usually results in more power and can be beneficial depending on your build. If your car is stock at the moment there is a good chance that you have a plastic intake manifold. I don't believe porting is recommended if you have a plastic manifold.
 

ron v

Fuego from San Diego
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Toys For Tots
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Interesting. It just dawned on me why Skunk2 designed the ultra the way they did.
 

Dar-Dar

Mordorator
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9,901
North NJ
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Civic Si
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Fiji Blue Pearl Coupe Coolest Member Since: May 15, 2011
It's usually meant for more air flow, but the trade-off is reducing the turbulent flow going into the combustion chamber. Turbulent flow = better mixture of air and fuel. That's why many engines are getting ported and polished for performance only on the exhaust side. In technicality for better performance, intake side = turbulent flow, exhaust side = laminar flow. Cross sectional area is also a big factor for a higher volumetric flow rate for a better performance gain.

I did mine using a long reach grinder.
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Nix

Jötunn Moderator
10,765
8,162
Lew-vul, KY
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It's A Fast Pig!
There are a few better places to spend $$ first if you're after more power.
 

mazda_lexus

Well-Known Member
204
53
There are a few better places to spend $$ first if you're after more power.

Definitely considering going on either a PRL stg 2 turbo kit/ Full race turbo kit
Or the CT-E SC


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