DIY Turbo Discussion greddy on a 1.8? homebrew kit?

begi cast manifold w/ external wg

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Old 09-29-2007, 02:01 PM
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Default begi cast manifold w/ external wg

i've been poking around this website to try and find on what to do with my 1.8 begi cast manifold that has no external wg. am i stuck with using a turbo with an internal wg, or is there anybody that can help me out?
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Old 09-29-2007, 02:44 PM
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an external gate flange/port can be welded to it
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Old 09-29-2007, 02:45 PM
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There's nothing "wrong" with internal. Anything you want comes either way.

Corky can modify the manifold for a cost if you really want external
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Old 09-29-2007, 03:20 PM
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thanks guys, i've been cranking a lot of info in these past weeks from this website and its been nothing but helpful, but i have very little knowledge about turbochargers, and i found out that pretty much all turbos from from factory cars have external wg. i didn't realize that the little gold canister on the turbo is an external wg.
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Old 09-29-2007, 05:57 PM
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I hate to break it to you, but the little gold cannister is not the wastegate, it's the wastegate actuator; basically it's a spring and diaphragm with a pressure port so the boost can open the internal wastegate door at the appropriate pressure differential.

Pretty much 99% of factory turbocharged cars are internally wastegated, from the Mazdaspeed 3 to the Bugatti Veyron.
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Old 09-30-2007, 05:43 PM
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yep, OEM is most likely internal. I'd spend a little more time reading about what the parts of a turbo are.
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