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Old 04-11-2010, 05:04 PM
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Originally Posted by eric32
...My timing is already set at 16 degrees initial at idle with the vacuum
advanced plugged...
Eric, if it were mine i'd run more ignition advance at idle, this would improve
idle quality and allow you to run a leaner air fuel mixture. With this the plugs will
run cleaner. If you decide to increase the initial, keep an eye on the total

How much initial advance do you have?
What is your total advance?
How much advance is in the vacuum canister?

Initial advance - ignition advance at idle with the vacuum canister plugged

Total advance - initial advance plus centrifugal advance combined; checked
at RPM where the centrifugal is full in (vacuum canister disconnected and pluged)

Check the vacuum advance with the hose connected to manifold vacuum,
subtract initial advance from this reading to determine what's in the canister.

Don't be concerned about the jet size in someone else's engine, tune your
engine for what it wants. Just because one engine makes more power than
another doesn't automatically mean it needs larger jets.

Last edited by automotive breath; 04-11-2010 at 05:18 PM.
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