Does Anyone Know How To Port The Wastegate? - NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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Does Anyone Know How To Port The Wastegate?

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Old 05-07-2003, 09:53 PM
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Hey I need to know what is the trix to port the wastegate?
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Old 05-07-2003, 10:04 PM
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Take the turbo off, take the exhaust housing off .. (not required) then port the wg. Its a very very simple job.
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Old 05-10-2003, 01:48 AM
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Tape in around 1/16 of an inch to the inside edge of the wastgate door.

Then just cut up to that line with your carbide bit.
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Old 06-17-2003, 12:33 AM
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make sure you put something to block the shavings from getting into the turbo as they will damage the blades and cam.



AN EASY EASY way of knowing how much to cut is to get some white spray paint and spray the door and press it closed so you get an outline of the wg door. That way you know how much to cut and when to stop so the door doesn't fall into your new larger wg port!
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Old 09-26-2003, 11:25 PM
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Does anyone have any type of pictures laying around? Khris
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Old 05-29-2007, 05:34 AM
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I have a question about the wastegate porting in an full non sequential setup.

My question is,why dose peoples say that u need to port the wastegate to give more boost in the lower rpm range? Plse tell me why i should port the wastegate. Then i had never boost creep. But i think i have after the full non seq. much lag.

The other Problem i have. I dont get the gasget here in Germany if i would port mine.

Is anybody out there to get my the right infos about the wastgateporting and the needing gasket between the first Turbo and the exhaustmanifold on the Twins and the gasket for the precontroldoor.
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Old 05-29-2007, 08:59 AM
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if youre not experiencing any boost creep.. dont bother portin the wastegate

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