Spent my saturday porting.
#1
West-coast Hoser... eh
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Spent my saturday porting.
I figured it was time to port my wastegate, since the full 3' exhaust, 3' TID, FCD, and my beloved boost might appreciate it and raise a little!
Hopefully these pics will work.
I know i probably could have hogged out a little more, but i was being cautious. If i still have boost creep, i'll pull it again, and port more. But i think it should be fine now. Wha do you guys think?
Hopefully these pics will work.
I know i probably could have hogged out a little more, but i was being cautious. If i still have boost creep, i'll pull it again, and port more. But i think it should be fine now. Wha do you guys think?
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just dont care.
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i did the same porting (infact that looks almost identical to mine) and it did almost nothing to help my boost creep. the problem is the 90 DEGREE TURN that the wastegate exhaust has to take before it gets out into the downpipe. also, the freakin flapper door doesnt even open all the way! horrible horrible design IMO.
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Air Die-grinder with a few different bits... wasn't too bad for my first time at it.
Although there were a few cracks here and there i wasn't too impressed about. But if it goes, then it goes,.. and its upgrade time.
Yeah, i tried a dremel for a little bit today,.. it was awful, if anything, it just smoothed out a few ridges, but i would never port the entire thing with it. Its the stock flapper, but i did trim just a little bit off the top where it hits the backing plate... also did trim down a divet on the backing plate for more room.
I totally agree with you on the horrible design,.. but sometimes you gotta work with what ya got. So, i'll see how this holds up.
The thought of a divorced wastegate with dump tube or even turning it into an external wastegate came across my mind, but thats too much work for a stock turbo, and welding cast iron? Good luck!..but still seems like a waste on something thats probably going to get upgraded or replaced.
Although there were a few cracks here and there i wasn't too impressed about. But if it goes, then it goes,.. and its upgrade time.
Yeah, i tried a dremel for a little bit today,.. it was awful, if anything, it just smoothed out a few ridges, but i would never port the entire thing with it. Its the stock flapper, but i did trim just a little bit off the top where it hits the backing plate... also did trim down a divet on the backing plate for more room.
I totally agree with you on the horrible design,.. but sometimes you gotta work with what ya got. So, i'll see how this holds up.
The thought of a divorced wastegate with dump tube or even turning it into an external wastegate came across my mind, but thats too much work for a stock turbo, and welding cast iron? Good luck!..but still seems like a waste on something thats probably going to get upgraded or replaced.
#6
Engine, Not Motor
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Originally Posted by jacobcartmill
i did the same porting (infact that looks almost identical to mine) and it did almost nothing to help my boost creep. the problem is the 90 DEGREE TURN that the wastegate exhaust has to take before it gets out into the downpipe. also, the freakin flapper door doesnt even open all the way! horrible horrible design IMO.
FWIW, this wastegate design is used by 99% of stock turbos. When properly sized (unlike our cars) it works very well.
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Originally Posted by Aaron Cake
You need to radically increase port size, beyond the stock flapper door. Then weld on a new flapper. In my opinion, that's the only time porting the wastegate is worthwhile.
FWIW, this wastegate design is used by 99% of stock turbos. When properly sized (unlike our cars) it works very well.
FWIW, this wastegate design is used by 99% of stock turbos. When properly sized (unlike our cars) it works very well.
But in the case of the S5,.. should the same be warrented?
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They are divided.. each one forming its own runner.
I would think porting the wall between would compromise the structure. And would probably result in cracks or worse failure.
I would think porting the wall between would compromise the structure. And would probably result in cracks or worse failure.
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Another issue is where the flapper door hits the back plate.
Opening the door wider will make a big flow increase.
The yellow line in the picture shows where the door hits the back plate.
I back cut the door with a mill file.
It was easier to control than a grinder.
Opening the door wider will make a big flow increase.
The yellow line in the picture shows where the door hits the back plate.
I back cut the door with a mill file.
It was easier to control than a grinder.
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anyone with the same porting as myself/ Sureshot/ jacob ?
How did it turn out for you? successful? Wasn't enough?
Feedback would be helpful.
How did it turn out for you? successful? Wasn't enough?
Feedback would be helpful.
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