1600 Single Port vs Twin Port ?

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Wyntand5900
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1600 Single Port vs Twin Port ?

Post by Wyntand5900 »

Hi All,
Besides the obvious single and double intake ports visible on the heads; what is the difference between then w.r.t. kW, torque etc.?
Which works best in a '69 DC ?
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fig
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Re: 1600 Single Port vs Twin Port ?

Post by fig »

Twin port produces more power and torque right across the rev range. I've posted the graphs here before; I'll see if I can find them again.
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fig
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Re: 1600 Single Port vs Twin Port ?

Post by fig »

Single port 1600:
Image

Twin port 1600
Image

Be careful when comparing the above graphs, the torque scales differ.
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