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porting and polishing

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Old May 14, 2005 | 06:04 PM
  #1  
sittingdpbplyr63's Avatar
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Default porting and polishing
what exactly does porting and polishing mean?????
 
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Old May 14, 2005 | 06:21 PM
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Default porting and polishing
On a four stroke, grinding away metal in the intake manifold and intake port to the valve. And on the exhaust side, grinding metal and polishing the metal in the exhaust port to where is meets the pipe.
 
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Old May 14, 2005 | 07:45 PM
  #3  
iiijay743iii's Avatar
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Default porting and polishing
it lets slightly more air flow, and more smoothly = more hp
 
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Old May 14, 2005 | 09:29 PM
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Default porting and polishing
On a 2-stroke its making the ports bigger and smoother to allow more flow, and to angle them or position them to change the power curve.
 
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