2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Wastegate Porting?

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Old Dec 24, 2003 | 11:49 AM
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Wastegate Porting?

trying to porting my wastegate is anyone have pics of porting out wastegate??
thank you and merry christmas....
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Old Dec 24, 2003 | 11:51 AM
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1987RX7guy's Avatar
Eat Rice Don't Drive it.
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No pics that I am aware of but there is a write-up in the archives.

I actually just came from reading that.

Santiago
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Old Dec 24, 2003 | 12:01 PM
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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.
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Old Dec 24, 2003 | 12:09 PM
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thanks
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Old Dec 24, 2003 | 02:03 PM
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That's exactly what I was looking for too. Thanks a bunch.

Damn Reted has everything!
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Old Dec 24, 2003 | 04:33 PM
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i was going to port the wastegate on my S4 but i couldn't get the exhaust housing off. so i just skipped it. it would have been easier then, as i was swapping motors.
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Old Dec 24, 2003 | 06:35 PM
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They housings were stuck on mine. I got a Jspec sitting in my garage right now. I had to use a rubber mallet and tapped the sides to get them off.
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Old Dec 24, 2003 | 07:36 PM
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I ported the wastegate on my S4....here's a few pics.
http://www.twistedrotors.com/fc/wastegate.html
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