Vacuum Secondaries

rumblefish360 said
For what it’s worth, and a static test has the car seats and you hover over the top of the carburetor opening throttle wide, the secondaries would be challenged to be opened. As you’re traveling down the road the vacuum secondary carburetor should be a smooth opening of the secondary side. The kick! That you mention comes from the downshift of the transmission.

The vacuum pod contains a spring which you can swap out for a lighter or heavier spring.

I used the trick where you place a paper clip or bobbie pin on the shaft coming from the vacuum pod. If the secondaries are working the clip will be shoved down the shaft as the secondaries open. Took the car for a drive with a couple dead stop launches but the clip never moved. Are the springs colour coded?