Today afternoon I skipped from work and decided to run the engine with my modified stock turbo. Last Sunday I removed the wastegate, but had no time to run it. Today I was able to bring (static) it up-to 3000 RPM and 30" MP with no problem. I have a homemade composite monster prop 70" D x 82 pitch and very wide blades. I had the feeling the engine would have gone higher if I pushed the throttle, but I was alone and the brakes were starting to slip. Also EC manual is telling that over 30" you have to be careful with the mixture etc.
I was afraid that with the wastegate gone, the turbo will be totally ineffective, but looks like it maybe OK and it may last untill we get the test results from Slade Turbo Testing Laboratories on the new TO4 Turbo.
I'm tempted to make a run on the 6K ft runway :)
Buly