Carter Thermoquads ~ 'More General Information'

4bbl.

I have two 850 CS TQs, bought one new in the 1970s, push in jets. Mate recently bought an 850 & 1000.
The C&S aerosol carbs have been around for years, probably 20 or more. I used to see them advertised in CT magazine. The theory looks good, but if they really
work well, why are not more in use? Especially Nascar type racing.