Well, no waste gate! The power to spin the turbo comes from the exhaust. If the system including the exhaust is all revmaster, you could say that it will run only as hard as their design speed. I hear that a revmaster engine is good to about 20,000 feet, which to me means that it produces more boost on the ground then it needs. But, the rpm that the engine produces is also proportional to the load out front (Propeller). If the prop is under pitched, the engine can spin faster and have a greater exhaust flow, resulting in more boost. Basically everything I just said is only so much BS and can go out the window. After the engine starts, apply power slowly and watch the MP gauge for changes. If you slam the throttle to WOT, you will get a larger initial boost which could overboost the engine. Slow changes don't react the same way.
As for the gauge, in my car I have a boost gauge, in the plane I have a MP gauge. The boost gauge goes from 0 to 20 psi and usually reads between 10 and 12. It will show a spike during shift changes in the range of 15, if I shift with my foot on the floor. In the plane my gauge reads in inches hg. With the engine off, it sets at the pressure for the day(29.92). After start up it reads a vacuum until about 2000 rpm. At that point, the MP starts to come up and will pass the standard day reading and continue to boost till it gets to about 35 in hg. All of this is with the waste gate closed. As to what to do to prep the turbo, Spinning it is a good thing. I would also open the oil pressure line and try to push some oil in the bearings to make sure it is not dry. Oil the remainder of the engine as well. Squirt some in the plug holes as well. I hope this helps you Orma Southfield, MI N110LR Tweety, old enough to drink this year Flying and more flying, to the gathering or bust http://www.kr-2.aviation-mechanics.com/
