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Originally posted by BooRadley
Dead on moonduck. Good to see you are applying yourself !
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Thank you, sir. Knowing your background, I take such praise seriously.
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Another thing: You see individual runner open headers only on drag racers. F1 cars have 8-2 systems or 8-4... I have never seen them running 8-8... Of course, I could be wrong, but I think that's pretty true. Nascar runs 8-2. WRC? 4-1
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My thoughts as well. The "scary applications" I was referring to above were the exhausts I've seen pics of from F1 cars. If there is honestly a more finely tuned and designed piece of automotive artwork than a serious F1 car, I am not aware of it. Those things are scary, and the attention to detail is phenomenal. They worry about tonths of horsepower.
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About the sucking noise : I'm willing to guess the car is being run without an airfilter, and as the secondary barrels of the 4 barrel carb kicks in, it creates the sucking sound from the immense amount of vaccuum caused by the engine as the engine draws huge CFM through the 2.5 inch hole of the aircleaner. I had an old pontiac which did that.
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Oh, dead on! Now that you mention that, it puts me in the mind of a friend's El Camino with a 454 in it running no ari cleaner (eventually needed a ring job and basically a top-end rebuild as a result) It made a sucking, gurgling noise when he romped it. Sounded cool if you didn't know how bad it was in the long run. Gasket kits and ring sets for a 454 ain't cheap at all.
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If you want to read the importance of scavenging, read something on two-stroke expansion chambers. two-strokes wouldn't run for shit without them
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No doubt there. Glad we're on the same page =)