Wastegate Porting?
ReTed made a pretty good write up of the S5 turbo wastegate porting on his website..
http://fc3spro.com/TECH/HOWTO/KWG/kwg.html
I have a few pics of when I ported my S5 wastegate as well, not as in depth though
https://www.rx7club.com/showthread.p...ighlight=turbo
If you have a S4, its the same thing only you will have only 1 wastegate hole instead of 2. Port it as large as the flapper, but not so large that the flapper can get stuck in it. You can also have a larger flapper welded on to allow for a larger port.
http://fc3spro.com/TECH/HOWTO/KWG/kwg.html
I have a few pics of when I ported my S5 wastegate as well, not as in depth though
https://www.rx7club.com/showthread.p...ighlight=turbo
If you have a S4, its the same thing only you will have only 1 wastegate hole instead of 2. Port it as large as the flapper, but not so large that the flapper can get stuck in it. You can also have a larger flapper welded on to allow for a larger port.
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I ported the wastegate on my S4....here's a few pics.
http://www.twistedrotors.com/fc/wastegate.html
http://www.twistedrotors.com/fc/wastegate.html
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Shainiac
Single Turbo RX-7's
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Jul 17, 2019 02:20 PM





