wastegate flange location

[Hit Man]

I noticed most external wastegates on bikes are mounted on the turbine housing. Is there a reason for not mounting it on the header? 

[Hit Man]

I'd like to fab the wastegate into the header because it seems to make better sense to bleed off exhaust before it enters the turbine housing. It  would also save a few hundred bucks for a better turbo.

[Chris Horoho]

it would be fine to build it like that
another option we do some times is mill/or drill a hole in the side of the exhaust housing and weld a tube in it for a WG

[buzard]

[Hit Man]

cool. Thanks.