[Great Lakes Greg]

I think for many, the hesitation to have an air cleaner has something to do with the gravity fed fuel system. A stuck float will allow gas to drip out the carb and soak an aircleaner. A tour here in Michigan had a car light up in flames from this. Fortunately there were a dozen Model A guys with what should be mandatory fire extinguishers in they're nearby cars. I personally will risk the various particals getting sucked up over the risk of losing it all in minutes. I think engine pans may have a lot to do with keeping out the bad stuff, too. Perhaps years ago, it just wasn't a big deal for a gritty industrial booming country to be concerned with?