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FC3S Pro:  Zenki Turbo Wastegate Porting | |
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Zenki turbo wastegate exposed Notice only single wastegate passage from one of the runners. Also notice the vague outline where the flapper door contacts the hole. |
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Kouki turbo wastegate exposed Notice two wastegate wastegate passages from both runners. If you have a Kouki turbo, we do have a Kouki turbo wastegate porting page here: http://fc3spro.com/TECH/HOWTO/KWG/kwg.html |
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Zenki turbo wastegate ported Using the outline of the flapper door, we ported approximately 0.5mm smaller than the flapper door diameter. |
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Zenki turbo wastegate ported, lighted Using a light to highlight the rear portion of the passage, this shows the backcutting of the passage for smoother flow. |
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Comparison before and after Before and after pics of Zenki wastegate. Although not to scale, the ported wastegate is about 2mm wider in diameter than the stock, non-ported hole. |