...IMHO his throttle body is a bit on the small side as his manifold

pressure

is down about 2.5 inches or so from what it should be. Chuck will be

working

on that as he is turning only about 5500 RPM at top speed. He at first

felt

the pitch on the prop too high but now he feels he needs to
get the manifold pressure up where it should be first....

More on Copper State after I get a little sleep.

Paul Lamar

Yvon Cournoyer wrote:

WHAT SHOULD THE MANIFOLD PRESSURE BE?
Mine is 14 inches of mercury at 1400 rpm.
You may remember that my engine also tops out at 5500 or so rpm, since I
installed the HOLLEY PRO-JECTION FIS.
Yvon Cournoyer.

At sea level and wide open throttle it should be around 29 to 30 inches of
mercury normally aspirated. 

What is your prop diameter and pitch Yvon?  PSRU ratio?

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org