I know and I am kind of surprised it is not working better than it is.
     I am struck by the analogy of a radiator placed too close to a blocking
     object such as an engine, oil pan or firewall. Apparently the fact that the back panel
     of the turbo charger limits the opening angle of the flapper to 15 degrees
     or so has a lot to do with it IMHO. There needs to be a large 3 inch diameter
     tube welded into the steel back panel so the gate can open fully IMHO.

     One may need two 3 inch tubes. One directly behind the turbine and another
     directly behind the waste gate.

     Paul Lamar

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Speaking of wastegates, I'm trying to find information about wastegates used on aircraft. These are perfect for manual wastegates and instead of popet valve design they are straight through tubes
with a flange on each end and a butterfly in the tube. They are pricey with the actuator attached at around 1K with a core. I have no idea about the through bore size to start looking. Aftermarket
automotive wastegates do not lend to easy conversion to manual operation.
...Chrissi

www.CozyGirrrl.com
Cozy Mk-IV RG 13B-turbo
Plans #957 Chapter? big pieces done, details, details

 
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