Porting S4 wategate
 

Anybody know how much to port S4 wastegate?

Thanks

Here are a couple of good links:

http://www.aaroncake.net/RX-7/s4wastegate.htm
http://fc3spro.com/TECH/HOWTO/ZWG/zwg.html

Hope that helps.

My wastegate porting: https://www.rx7club.com/2nd-generation-specific-1986-1992-17/serious-s4-wastegate-porting%85-343788/ (scroll down to post #15 for reposted pics)