External wastegates - how do they work?

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Apr 20, 2005 | 07:41 PM

Wazzzer

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From: Isle of Wight

External wastegates - how do they work?

Just a question for my mate really as he's discovered he's got one on his Scoob (also I'd like to know how they work)

His is venting off to atmos via a screamer pipe as shown below

thanks for any help

Apr 20, 2005 | 07:47 PM

Stavros

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From: North Korea

same as a normal wastegate, just not attatched to the turbo

Apr 20, 2005 | 07:48 PM

Wazzzer

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PassionFord Post Whore!!

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okey dokey, is he gaining any power out of this setup you reckon?

Apr 20, 2005 | 07:53 PM

Stavros

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From: North Korea

maybe, if the standard exhaust is restrictive.

looks like a std downpipe, but thats unlikley.

what turbo is he running? must be pretty big to use an external gate...

Apr 20, 2005 | 07:56 PM

Phil

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Only an advantage on large turbos at 500bhp plus sort of power, where the internal wastegate can't vent enough gas at high RPM to control the boost and you end up making 30psi like it or not

Apr 20, 2005 | 07:59 PM

GARETH T

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From: barry-south wales

Quote:

Originally Posted by Phil

Only an advantage on large turbos at 500bhp plus sort of power, where the internal wastegate can't vent enough gas at high RPM to control the boost and you end up making 30psi like it or not

that isnt true,, they are always better than an internal wastegate if designed correctly