General Category > Quadrajet Carb Talk and Tips

Marine engine

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Flightcraft18xlt:
Ok read post on how to post pics.

Cliff Ruggles:
Most important is the set the total advance so you don't ping/detonate the engine, then modify the advance curve if/as needed for best initial timing that provides good idle and easy starting when the engine is fully heat soaked.

For most V-8 engines, 8 to about 14 degrees initial timing, 30-36 degrees total timing, and 10-15 degrees from the vacuum unit will be a good place to be.

With a big cam as you are using in this particular engine, it's going to have low vacuum at idle speed.  As long as the carb is set up to provide plenty of fuel at idle, it should idle fine without running a lot of initial timing.....Cliff

Flightcraft18xlt:
Ok thanks Cliff I will do some testing on the water and see what the max total timing will need to be and go from there.

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