External wastegates, why do they make more power than internals?
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From: Okayama, Japan
Re: External wastegates, why do they make more power than internal wastegates? (meanteg)
i would think that its because a turbine housing without the internal wastegate flows more, and the fact that most people with external WGs run open loop.
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From: hollywood, ca, usa
Re: External wastegates, why do they make more power than internal wastegates? (meanteg)
They don't. On a big turbo app. they are able to limit boost were an internal gate is to small. Externals are used most often with huge exhaust and/or oversized compressor housings.
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From: pa, usa
Re: External wastegates, why do they make more power than internal wastegates? (captain4g63)
i will agree with d-speed. the fact that with a remote wastegate you have the option to run open or closed loop. if you decide to give the wastegate its own dump tube(open loop) it makes it that the wastegate has lower backpressure, making better wastegate response and it doesnt interfere with the turbine flow..so i guess you could say its more efficient, performance wise, but definately not good for economic reasons.
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From: Somewhere in California
Re: External wastegates, why do they make more power than internal wastegates? (captain4g63)
They don't. On a big turbo app. they are able to limit boost were an internal gate is to small. Externals are used most often with huge exhaust and/or oversized compressor housings.
WG's dont "make power" but they control boost pressure better, an internal WG is more likely to spike/creep at higher psi
[Modified by BlueShadow, 2:53 PM 12/5/2001]
Texas B*tch!
Joined: Oct 2001
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From: Austin, Tx
Re: External wastegates, why do they make more power than internal wastegates? (BlueShadow)
They don't. On a big turbo app. they are able to limit boost were an internal gate is to small. Externals are used most often with huge exhaust and/or oversized compressor housings.
captain 4g63 is correct,
WG's dont "make power" but they control it better, an internal WG is more likely to spike/creep at higher psi
captain 4g63 is correct,
WG's dont "make power" but they control it better, an internal WG is more likely to spike/creep at higher psi
Just do a size comparison of an internal wastegate to an external, ouch! 
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