Porting S4-S5 waistgate
09-08-04, 08:02 PM
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Porting S4-S5 waistgate
I have heard that when you increase boost pressure, you will need to port your stock waistgate or you will develop boost creep which will eventually screw your motor.. does anyone know how to port the waist gate? is it somthing i could do at home and finish in liek a day?
09-10-04, 07:01 AM
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Originally Posted by fastcars101
I have heard that when you increase boost pressure, you will need to port your stock waistgate or you will develop boost creep which will eventually screw your motor.. does anyone know how to port the waist gate? is it somthing i could do at home and finish in liek a day?
http://fc3spro.com/TECH/HOWTO/ZWG/zwg.html
S5
http://fc3spro.com/TECH/HOWTO/KWG/kwg.html
-Fanis
09-13-04, 10:02 PM
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would a BOV eliminate the need to do this or is that somthing totally different? sorry if this seems to be a retarded question for the people that have been here for centuries
09-14-04, 01:26 AM
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Originally Posted by fastcars101
would a BOV eliminate the need to do this or is that somthing totally different? sorry if this seems to be a retarded question for the people that have been here for centuries
compressor surge destroys your turbo. Boost creep destroys your engine.
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09-14-04, 08:22 PM
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Basically... once the turbo is out. Just take off the plate on the turbine side (3 nuts and 2 bolts)
Then you will have access to the wasgate flapper door. The wastegate actuator rod is connected to the flapper door by a little C clip. You can either push the rod to the side or disconnect the wastegate actuator from the turbo itself.
Then open the flapper door and keep it up (with tape or something)
Now, with mine it was simple.. because the wastegate left a nice ring around where it closed.. showing me where to port. If yours dosnt have this... i suggest maybe using some ink? something to put on the flapper door and press it against.. to leave the imprint.
Now, just get a rotary tool (I used a air type which worked awsome) and port away. The whole process (once turbo was off) took AT MOST 15 mins.
JUST BE VERY CAREFUL NOT TO OVER PORT!!!
Then you will have access to the wasgate flapper door. The wastegate actuator rod is connected to the flapper door by a little C clip. You can either push the rod to the side or disconnect the wastegate actuator from the turbo itself.
Then open the flapper door and keep it up (with tape or something)
Now, with mine it was simple.. because the wastegate left a nice ring around where it closed.. showing me where to port. If yours dosnt have this... i suggest maybe using some ink? something to put on the flapper door and press it against.. to leave the imprint.
Now, just get a rotary tool (I used a air type which worked awsome) and port away. The whole process (once turbo was off) took AT MOST 15 mins.
JUST BE VERY CAREFUL NOT TO OVER PORT!!!
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