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Reply to "Mechanical vs Vacuum Secondaries"

@Sharkey posted:

Vacuum secondaries are easily set up to come in as early (or late) as you like, simply buy the secondary spring kit as shown below, & go lighter until you get the secondaries to open where you like 'em. Set your timing to be 32-34 degrees TOTAL, then install the yellow spring. If the distributors advance(s) centrifugal (& vacuum if also used) are set up right to pull in advance, you'll love the vacuum secondaries. View the chart below:

Do you recommend the short or the long yellow spring?  Thank you.

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