What happens when you increase the timing advance?
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. Example: Magneto timing was reduced 6 degrees in our blown alcohol drag racer, and our low-end 60-foot times were quicker by 0.05 seconds from more low-end power.
What happens when you change the ignition timing?
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.
Which is the best ignition timing for a blown gasoline engine?
Example: For blown gasoline at around 2 atmospheres, 28 degrees of ignition timing is common for best power. For the same blown engine on alcohol at a richer mixture, 32 degrees of timing is common. Example: One methanol combustion engineering test measured a 22% reduction in methanol flame speed for a 19% increase in fuel enrichment.
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.
When do you change ignition base idle timing?
Typically, when your car comes from the manufacturer, ignition base idle timing is set to a manufacture specification before top dead center. The timing advances as the engine’s speed accelerates, however, resulting in a variable that will need to be periodically adjusted using a timing light.
Is the Caterpillar CAT 3408 engine still in production?
Cat 3408 Engine Specs. by Erik Devaney. The Cat 3408 is a high-speed, industrial engine from Caterpillar Incorporated that is no longer in production. According to Pro Vehicles, the 3408 can power a variety of vehicles, including yachts, ships, loaders and trucks.