Dual Wastegate?

[4g63telantra]

So ill be running a 60-1 turbo and I had a custom made manifold made for a 35mm wastegate. I still have time to add a another 35mm flange for another wastegate.
Plus my buddy is selling a 35mm WG for cheap

Just wanted to know if a 35mm would be too small for a turbo running 25psi - 28 psi?

If so would it be safe to run 2x 35mm wastegates? and if so what springs would I have to run on each?

Same on both wastegates? (ex 15psi = 7.5psi spring on each wastegate)

 

[99gst_racer]

I'm not sure if two 35mm gates will be needed or not. I have seen people run two of them before though. If it were mine, I would have the other flange welded on, and then have them include a block off plate for it. First, try to run one 35mm gate. If you are getting spike or creep, then buy your buddy's gate from him and bolt that one on.

 

[Syndicate13]

People running dual wastegates are doing so because of the divided turbine housing on some of the large Garrett GT turbos, ie: the AMS Black Evo. A single 35 or 38mm should do you fine on a 60-1 as long as you aren't trying to run 10psi.

 

[4g63telantra]

Well just picked up a GT40 turbo so may go ahead with a dual set-up

 

[GVR4592]

Are you going to be using a divided outlet manifold?

 

[4g63telantra]

Are you going to be using a divided outlet manifold?

Ill be using 1 Large tube style