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These days, it is considered detrimental to engine performance to polish inlet tracts.
Polishing inlet tracks would have an unmeasurable effect on heat transfer. Not considering the latent effect of the fuel vaporization. An elementary knowledge of thermodynamics would substantiate this.
It was never about temperature, rather an attempt reduce boundary friction, often as a result of port modification.
Ducati inlet tracts are produced on a 5 axis mill so they are all identical
Last edited by Capo; 31-03-2015 at 12:43 PM..
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