Some of the ways that you can check for proper distribution is by using:
a) Chemical Analyzing exhaust gas (combustion products) samples from the individual cylinders during different engine dyno modes: Idle, Cruise, Acceleration, Maximum Torque, Maximum Power, Maximum +10% Torque, Maximum + 10% HP and finally at Maximum Economy Points.
b) Measuring Exhaust Gas Temperatures (EGT Thermo-couples normally used for this).
This is done by inserting a Thermo-couple into each Manifold Exhaust Port or Header Port .
The Dyno Operator looks for "EGT Peaks" at various modes by changing main jet sizes or fuel injector duty cycle settings.
Rarely are all Cylinders the same because of differences in cooling, valves, porting, and ring sealing.
Perfect Distribution would put all cylinders at their peak EGT Temperatures with the same carb jetting which by the way is RARELY ACHIEVED.
Time to do some home projects. Later.
Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
|