On an OS 40 FP-S and Tower 40 engines, what are the locations of the ports? (starting at the exaust port and going clockwise, looking down)
Engine question
Stuka Stunt Main Forum · 3 of 3 known posts recovered
On any Schnurle engine the boost port is the one opposite the exhaust port. The other two (right and left) are the bypass ports (the main fuel inlet ports). The boost port was not a part of the original Schnurle design, and was added to do exactly as its name implies, boost the high end rpm.
Leonard Neumann
Thanks Len, that's what I thought, but someone this weekend said it was another one and I just needed to check.
Jerry
Jerry