How to change engine timing on a V-twin?
Click to expand… Because you don’t know doesn’t make them useless. It’s a WOT change, all the blocks. Move one of the blocks on the RPM page, then go to the corresponding rpm throttle position page. You will see the change. Make changes ’till it pings then back off. Most maps are too conservative, retarded.
When to change ignition timing for maximum power?
Optimum timing from a fixed (locked) ignition advance occurs at only one engine speed. Ignition timing is too advanced at engine speeds below that and not advanced enough at engine speeds above that. Changing the timing value up or down changes the engine speed up or down for the optimum ignition timing.
Which is the correct definition of ignition timing?
Ignition timing refers to the point at which the spark plugs ignite the fuel within an engine’s cylinder.
What happens when you change the ignition value?
Changing the timing value up or down changes the engine speed up or down for the optimum ignition timing. The engine speed operating range affects where the timing is the best. Increasing the timing advance raises the high-end power, reducing the low-end. Decreasing the timing advance raises low-end power, reducing the high-end.
Why is ignition timing important in an engine?
by Don Bowman. Ignition timing refers to the point at which the spark plugs ignite the fuel within an engine’s cylinder. Proper timing is all-important to the thermo-efficiency of the engine. The first thing to keep in mind is that fuel burns at a certain rate in an engine regardless of the rpm.
What happens when fuel is ignited at the same 10 degree timing?
As the engine rpm increases to 3,000 rpm, the fuel, — still requiring the same time to burn — would never have sufficient time to burn if ignited at the same 10-degree timing. In order to have the same result, the fuel must be ignited much sooner in the compression stroke.
Why does the engine run after the intake valve closes?
As the piston reaches top dead center and continues downward once again it creates a vacuum sucking more fuel into the cylinder. This is the intake stroke. Just prior to reaching the bottom of this stroke the intake valve closes. The crankshaft turns again and the piston begins to move upward, compressing the raw fuel and air in the process.
How does the second stroke of ignition work?
The upward moving piston forces the burnt gases out of the cylinder. This is the second or exhaust stroke. Just before the piston rises completely in the exhaust stroke the intake valve opens, using the vacuum produced by the rapidly exiting exhaust gases to help draw in more fuel from the intake valve.