Overcompression - Maybe or Not
This 049 Bluehead engine may be over-compressed (???) - only head shim application and further testing could show real results. However, for RC flying (due to variable engine throttle), application of fuel tank pressure is noted to be common practice. In control line circle flying ... it is not common. Uniflow tank set-up is the "common" practice due to centripetal acceleration & direct freestream "pitot" aerodynamic pressure application to the tank.
Since I now have a "clear" demonstration of this engines expected performance, any further testing will be performed "in-flight," rather than on a bench set-up. So, I am ready to proceed to the flying circle for further engine operation ... and the fun that goes with model flying.
Cheers, Flypast111