[65 Lamnas]

Originally Posted by tooski

Does anyone run with the choke pull off disconnected from the secondary air flap thus allowing the flap to open immediately instead of the 1 to 2 second delay? I find that when when I am in low and nail it, it takes about 1000 rpm before I feel the extra 'kick' from the secondaries. I recall seeing a vid of a Qjet operation in a drag race. It seemed to me the flap went wide open immediately on WOT.

Depends on your application, but I don't think you'll want to completely disconnect it....maybe speed up the opening rate. But if you completely disconnect it, you'll for certain need to tighten the spring some. If they simply flop open, you'll almost certainly have a bog since there is no immediate "pump shot"

There are a few tools and knobs for this. Depends on a few things, really. Weight of the car, converter flash point, if it's an AT, and the dashpot itself. Some can be drilled easily to shorten the release time. If your engine revs ultra-quickly, it may be necessary to disconnect it and just run on the torsion spring tension. You may have to play around with it a bit to see what it likes or wants.

Another thing to consider is your secondary air flaps and the location of the POE hole vs. the flap.

Late 60's and early 70's carbs have a slot in the flaps.

The late 70's 800cfm carbs have no slot in the flaps and the holes are actually above the flaps. Sometimes it's a good idea to expose those holes to the low pressure area below the flaps, so many times I'll create a slot to do so.

A fun trick is to angle the opening of the secondary discharge nozzles to create more exposed area....it gets the fuel flowing more quickly. Also, make sure the discharge nozzles aren't pressed in too far, restricting fuel flow. Many times they aren't positioned quite right.