Group, One source of easily adjustable waste gates is turbo motorcycles.

There was a excellent

poppet valve waste gate on the Yamaha 650 turbo. The bike used a diaphram

actuated by inlet

manifold boost to open. The standard opening was at about 5-6 psi manifold

pressure. The trick was

to put low pressure regulator in line, and viola! instant dial a boost

with a max of about 12-16

psi manifold pressure. Bill Jepson

Turbonetics has a cockpit mounted variable boost control regulator that
connects to your wastegate and allows you to adjust your boost as desired.
You can dial in however much boost you need.

http://www.turboneticsinc.com/catalog/wastegate.html

Bob Rogers

 
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