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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 01-23-2014, 07:54 PM   #21
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38mm wastegate with the spring removed should build almost no boost. This doesnt make sense.
Could you rig up a vent-to-atmosphere dump tube and give that a shot?
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Old 01-28-2014, 11:09 AM   #22
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Originally Posted by mx592 View Post
I'm sure it wouldn't hurt. But it would require a lot of rework (the dump tube would need to change, the coolant lines, etc.). Personally I am starting to think my best bet would be to shorten the dump tube dramatically - like half the length it is now. It would actually be less work to do that than it would be to mess with the manifold since the EWG orientation wouldn't change. While I am at it I will see if I can break the edges on the inside of the manifold and create a smoother flow path into the elbow that leads to the wastegate.
take the hood off and rotate the EWG to fire straight up.

Im willing to bet 100% that regardless of what you do downstream, you will still spike because of whats happening in the manifold.
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