converting a greddy 18g internal wastegate to a external wastegate what is need?

[Jonneson]

Sup guys i want to convert my internal wastegate to a external wastegate. I am think of this and seeing if its can be done . What do i need inorder to do this mod to a greddy turbo. Thanks.

 

[SlowSpyder]

it all depends on where you mount your external wastegate. If you mount it on your exhaust manifold then youll need to block off or weld shut the wastegate passage. If you mount it on the o2 housing then you need to open up the wastegate passage for more flow to the external wastegate. You will need to modify or buy new manifold or modify/buy a new o2 housing also depending on if you decide to dump to the atmospere or recirculate back into the exhaust