Need help tuning a six pack

thepaintguy said

That being said, you can adjust your linkages to bring the secondary carbs in at an earlier RPM for serious thrashin'. Just remember; you will be using twice as much fuel, and if your riding around town like that you will be washing the cylinders with gasoline- Not good.
Hope that'll help you.
TPG

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I agree with what you said until you got here.

You cannot/should not open the secondaries with a linkage unless they have been converted to open mechanically and have had accelerator pumps installed on them.

If you want to open the secondaries sooner, you put lighter springs in them until you find the correct ones for what you are looking for. Make sure that you put the same springs in both outboard carbs. The outboard carbs on a six pack are vacuum operated.

Trying to open them mechanically with a linkage will induce a bog because you don't have accelerator pumps to cover up the lack of fuel lean condition when you open them mechanically. This is the most common problems with people trying to set up six packs.

The linkages are used to help them open up evenly together at the same time.