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Old 29th April 2004, 01:09 PM   #1
joensd is offline joensd  Germany
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Default Basic Q about port diameter(s)

Im in the process building a ML-TL and I love to use what I have on hand.
Ive got two 2.36in diameter ports lying around which are angled and end after a lenght of 3.78in with a diameter of 2.165in.

The only literature I have around is the german translation from Vance Dickason (not so cool BTW) and I wondered there is not one comment about angled ports.

Which diameter do I have to calculate with?
Or is it rather worth buying or finding a "straight" port for maybe easier and more successful tuning of the ML-TL.

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Old 29th April 2004, 02:12 PM   #2
Ron E is offline Ron E  United States
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If they are tapered (like a truncated cone - or frustum) I wouldn't use them - but it sounds like there isn't much of a taper, so it probably wouldn't matter much. If you must use them, I would go with the average diameter for port calculations.
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Old 29th April 2004, 06:19 PM   #3
joensd is offline joensd  Germany
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Thanks for the advice.
Ill have a look what mathcad says about the average diameter but will check if I can get another straight port just in case.
Dont want to get into trouble once the port-hole in the baffle is cut.

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