Here are some pictures and how you supposed to port your wastegate .
before porting your wastegate , make sure to cover everything else on your turbo . Step one use tool #1 carbide porting tool to enlarge wastegate hole .06" to .08" larger over all diameter , used tool #2 smooth out surfaces that you just ported , used tool#3 to final polish . this step alone doesn't help mutch but step one + step two = different story .
now it's step two , this step is very important . use tool#1 steel ball head to make .150" - .250" corner radius on first half of the hole ( blue line i draw ) only , do not touch other half or you'll say hello to boost creep . now use tool#2 stone ball head to smooth it out , use tool #3 to final polish it . note: do not go crazy on that radius or you'll down on power. my writting is sucks , so let me know if you're not sure what i'm talking about . enjoy and good luck with your porting .:icon_bigg James
before porting your wastegate , make sure to cover everything else on your turbo . Step one use tool #1 carbide porting tool to enlarge wastegate hole .06" to .08" larger over all diameter , used tool #2 smooth out surfaces that you just ported , used tool#3 to final polish . this step alone doesn't help mutch but step one + step two = different story . now it's step two , this step is very important . use tool#1 steel ball head to make .150" - .250" corner radius on first half of the hole ( blue line i draw ) only , do not touch other half or you'll say hello to boost creep . now use tool#2 stone ball head to smooth it out , use tool #3 to final polish it . note: do not go crazy on that radius or you'll down on power. my writting is sucks , so let me know if you're not sure what i'm talking about . enjoy and good luck with your porting .:icon_bigg James
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