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| Re: Port polishing |
Subject: Re: Port polishing
by rgrinder on 2013/6/25 16:10:19
Actually, it is a proven fact that polishing ports will slow port velocity.
Porting a head consists of cleaning the runners up to remove obstructions (small and large bumps) and casting imperfections. But, if you speak to any professional they will tell you that they leave the outer walls somewhat rough. The reason for this is to create turbulence in the port runner, this does two things 1) it creates turbulence that helps to mix fuel and air better, and 2) the turbulence helps to increase air flow velocity. Hope this helps.
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