First question is about production 6xxx & 9xxx TQs.
At some point in the production, the air horn got an additional 'hump' for an enlarged horizontal hole/passage that connected the air spacer above the float bowl area to the rear of the carb. What is very odd is that the angled hole that this passage intersects is....1/4".......on both models. Why create a new casting [ $$$$ ] & enlarge one passage, but not enlarge the passage it connects too. Does not make sense. Anybody have any thoughts???
Second question on the Comp Series 850 cfm.
I have two, one has screw in jets, one has push in jets. The air horn has other differences besides the jet type. While the two rear float bowl vents are slightly different, both are only about 1/2" above the air cleaner surface. Production TQs have two 1.5" tall tubes for venting.
I am wondering with the CSTQ short vents if fuel could slosh out on a hard launch. Thinking about blocking them off & just relying on the single, front vent which is quite large in diameter. Thoughts?