I wonder if it has to do with the fact that when the tetter-totter pops out and sits below the spot where its supposed to sit. When you press the pedal, the top of the T is now pushing against something hard, namely the underside of the U, thereby blocking full pedal movement, preventing WOT and possible preventing the secondaries from opening.

When I re-attached my tetter-totter, I got full pedal travel and could then achive WOT -- which of course made the car faster. In addition, the pedal felt lighter (assisting the "quick" feeling) due the the that spring taking some tension off the main return spring -- I think.

 

I have the same problem. I did speak with "Sterling" and he gave me some good info. I still have not remedied my problem but maybe the info he gave me can help you. Shoot me your email and I will send you the info. Rob

 

thanks Rob, but i got it fixed today. i rebuilt another carb, installed it, and all is well now.

 

To the best of my knowledge, my carb has never been rebuilt. Damn thing runs great, just secondaries not opening. Sterling thought my problem may be fuel starvation. I put a "black" pump on it and set the reg at 4psi and no difference. The pump was so loud I couldn"t stand it,So I bought a new stock replacement. Any idea what you did different in the rebuild? There's got to be something different if it works now. Thanks

 

i ensured that the vacuum passage was perfectly clear on the lower portion of the carb and the same for the main body. i think i had a clogged secondary vacuum passage or air bleed on the old carb. i really took my time with this rebuild and removed each air bleed individually and made sure each one was perfectly clean. i tested the vacuum diaphram for the secondaries and ensured each gasket was perfectly placed.