Quote:
Originally Posted by Old Tele man
Using "first-cut" design equations, the equal-length exhaust pipe dimensions are roughly:
• LENGTH (exhaust valve to collector):
2000 RPM ≈ 108" (longer than the 89.2" wheelbase!)
5100 RPM ≈ 42.4"
• DIAMETER (inside pipe):
2000 RPM ≈ 0.77"
5100 RPM ≈ 1.23"
...which looks like 1.0" dia and very L-O-N-G header pipes between the engine and collector.
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How did you calculate this?