Quote:

Quote:

Learn something every day on Moparts. All the AFB's I have worked on over the years had the weighted air valve and I thought all AFB's had it. Ron



I'm not doubting what is being said here but without the air valve I would think there would be a substantial bog when the secondary's were winged open as there was no secondary pump shot



In my experience with the AFBs without the secondary air valve there was no bog. Either there was enough engine to keep air flowing OR the carb was small enough by comparison. BUT, put one of those on a 273 and there was a bog...