Red Mist, thanks for the reply. I do understand the importance for backpressure in automotive applications, especially in something like nascar. I"ve even seen some off road guys lose quite abit of torque by running too big of pipe. Wrong cam also aided in some of the losses. I just couldn"t see how in a low rpm engine such as an M, any torque would be noticably lossed. I just wanted some reinforcement for my thinking...thank you.
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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