Posted by GordoSD on February 10, 2011 at 17:46:27 from (216.106.252.164):
In Reply to: exhaust pipe diameter posted by Justin SE IOWA on February 10, 2011 at 17:16:21:
Noise at the end of the tailpipe is a function of what is between that and the exhaust ports. Duh? You could have 4 inch pipes off Hedman headers, but if you had a couple of mid 60's Caddy mufflers plus the reasonators it would be like a n EZ Go electric golf cart. Unless you are 12 to 1 comp, 7500 rpm you don;t need the pipe, all you need to do is experiment with mufflers. I'd start with some of the performance Mopar stuff from the late 60's. I bought a 383 Cuda in 68 and it had that low rumble that at low rpm my girlfriend could hear it idling up the street 4 blocks away. But at anything over 2000 rpm it was like everything else. Of course it came stock with those big chrome cans!
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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