Thread: 750 vac secondaries partially opening
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Old 06-18-2011, 04:33 PM
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Join Date: Nov 2007
Location: Clayton, IN
Cobra Make, Engine: ERA 838
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Default 750 vac secondaries partially opening
I was doing some fine tuning on my Cobra and suspected the secondaries on my Holley 750 vac secondary were not opening. I put a zip tie on the vac pod rod and observed that the secondaries are only opening about 25%.

I ordered a set of springs last night. Not sure which spring is in the carb now. The engine was dyno tuned by the builder.

Would you go 2 spring sizes softer or just 1? I have a turkey pan and it is a pain to change springs and would like to get it on the first guess.

John
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