for... Skyking...

[Kim Geyer]

To you guys trying to clean your wastegates, some of the later model 337's use a metal seal instead of an O-ring and will most likely leak if reused. You can get new ones from Aircraft Spruce.
Also Gary Main told me that a good test for the waste gate is to cap the oil inlet and start pressurizing through the oil exit port, the waste gate should start opening @18 psi and be fully closed by 50 psi. this is a quick easy test.
Kim