how big to port wastegate on s5 t2?
#1
Rotary Freak
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how big to port wastegate on s5 t2?
i am about to port my wastegate on my 89 t2 and read this write up on it http://fc3spro.com/TECH/HOWTO/KWG/kwg.html my question is how big should i port it? should i port it just like how it is in the pic does it give you more hp if you do it a certain way? also where can i find a carbide burr like in the pics i went to lowes and autozone neither of them have it
#2
I'm a boost creep...
Join Date: Jan 2002
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If you want more power, don't port it at all. That will let the boost rise uncontrollably and you'll have lots more power. For a little while anyway...
Seriously, this is not a power mod, it's a keep-your-engine-alive mod. Proper boost control will allow you to safely improve intake and exhaust flow without boost increasing to unreliable levels.
Seriously, this is not a power mod, it's a keep-your-engine-alive mod. Proper boost control will allow you to safely improve intake and exhaust flow without boost increasing to unreliable levels.
#3
The Outsider
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Port it big. I ended up porting just the smaller holes about a 1/4 inch bigger and it only took my boost down 2 psi from 12. So no **** I just finished pulling it off and porting it all the way out and left about 1/16 inch ring around the passage and back cut the **** out of it just on the smaller passage. the bigger one I only took a little out of it. its a lot harder to reach. I used pink grinding stones and a air die grinder. The pink stones seem to cut the cast iron the best. Now my boost hits 5 real quick and creeps up to about 7. Much safer on stock injectors. Its a lot more enjoyabe to drive cause you not staring about the boost gauge the whole time modulating the throttle.
#4
Rotary Freak
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the whole reason why i'm doing this is to prevent boost creep because i'm going to get a full 3'' exhaust so should i port it almost as big as they have it on the fc3spro website they have it ported so big that the divider part between the 2 holes is real skiny wouldn't it crack if it was that thin mine has some small cracks on the housing but it's fine
#5
It's a Hammer
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I got mine with Fast turnaround from http://www.carbidebur.com/longshank/longshank.htm
I would try porting just smaller than the flapper door. If you still have creep you can go bigger.
I would try porting just smaller than the flapper door. If you still have creep you can go bigger.
#6
Rotary Freak
Thread Starter
thanks for the link i bought some bur's from lowes today but they were for a dremel i only could port the smaller hole because i need the extra length to reach the bigger hole ill buy one from there by the way is one enough for the job the bur i used today i can use again because it isnt worn out at all also which design should i get to port the wastegate? and i'd want a double cut right since it's a harder metal right??
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