Using abrasive flow machining, Extrude Hone AFM pushes an abrasive-laden polymer media through the manifold's internal runners. The media conforms to bends, turns, and transitions while smoothing rough surfaces and reducing restrictive areas.
Unlike hand porting, which depends on the technician being able to physically reach the passage with a tool, AFM can work throughout the selected runner. Extrude Hone AFM's existing Atlanta porting information specifically identifies the process as a more uniform approach to internal finishing.
Why Intake Manifolds Benefit From Porting
The intake manifold distributes air to the engine's cylinders.
Even when a manifold is well designed, casting and machining can leave internal imperfections such as:
- Rough surfaces
- Sharp transitions
- Minor burrs
- Uneven port dimensions
- Restricted internal areas
- Runner-to-runner inconsistencies
For performance applications, these small restrictions can matter.
Improving the internal surface and transitions can allow air to move through the manifold more efficiently.
How AFM Ports an Intake Manifold
AFM uses a polymer media carrying abrasive particles.
Hydraulic pressure forces the media through the intake runners. As it travels, the media becomes a conformable finishing tool that follows the exact shape of the internal passage.
The abrasive works against high spots, rough areas, and restrictions.
Because the media flows throughout the passage, AFM can address geometry that may be inaccessible with conventional grinders and rotary tools.
This is one reason the process is particularly useful for enclosed or curved intake-manifold runners.
AFM vs. Hand Porting
Hand porting can produce excellent results when performed by a skilled technician with good access.
The challenge is consistency.
Different runners may receive slightly different treatment, and deep internal areas may be impossible to reach.
AFM provides a process that can be controlled through media, abrasive, pressure, tooling, and cycle conditions.
That makes it especially useful when uniformity matters across a manifold or across multiple production components.
Potential Airflow Improvements
Extrude Hone AFM reports intake-manifold flow improvements of up to 25 percent in suitable automotive applications.Better airflow may support:
- Improved volumetric efficiency
- More complete cylinder filling
- Increased horsepower
- Improved torque
- Better throttle response
- More efficient combustion
These benefits depend on the entire engine combination and should not be treated as universal guarantees.
A highly restrictive cylinder head, poor tuning, inadequate exhaust, or other system limitations may prevent the engine from realizing the full potential of improved manifold flow.
Atlanta Performance and Motorsports Applications
Atlanta and the surrounding region support a substantial performance automotive community, including racing, restoration, specialty imports, domestic performance, custom fabrication, and engine machining.
AFM intake manifold porting may be particularly useful for:
- Performance street vehicles
- Track cars
- Classic and restoration engines
- Custom intake systems
- Turbocharged builds
- Naturally aspirated performance engines
- Rare or difficult-to-replace manifolds
Manufacturers may also use AFM where repeatable runner finishing is required from one component to another.
Material-Specific Processing
Not every manifold should be processed with the same abrasive formulation.
Aluminum and cast iron respond differently to abrasive machining.
Extrude Hone AFM can adjust abrasive concentration, particle size, media characteristics, pressure, and cycle conditions according to the workpiece.Request Atlanta Intake Manifold Porting
Call (562) 531-2976 to discuss your Atlanta, GA intake manifold with Extrude Hone AFM. The manifold's material, geometry, current condition, and engine application can be reviewed before an AFM process is recommended.
FAQs
Can AFM reach deep intake runners?
Yes. The conformable media can travel through internal passages that may be difficult to reach directly with hand tools.
Will AFM automatically add horsepower?
Not automatically. Improved flow may support performance gains, but the result depends on the complete engine combination.
Does Extrude Hone AFM serve Atlanta?
Yes. Extrude Hone AFM processes components for customers nationwide.
