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Stock port size, 6~versus~4

Old 09-30-05, 04:58 PM
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Stock port size, 6~versus~4

Which engine has bigger porting stock for stock, a 6port or a 4port(s4 or s5)?
Old 09-30-05, 05:33 PM
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Originally Posted by gerbraldy
Which engine has bigger porting stock for stock, a 6port or a 4port(s4 or s5)?
6 port has longer duration.
Both connected to their LIM's, my flowbench says the 4 port flows more.
My power experiences with similarly built 4 port engines vs. N/A engines gives similar results.
Old 09-30-05, 07:00 PM
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I thought that 4 port engines only flow more if they are ported?
Old 10-01-05, 09:47 AM
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Originally Posted by BlaCkPlaGUE
I thought that 4 port engines only flow more if they are ported?
That was my understanding aswell, hence why I posted this thread. I'd love to get some solid info for this question.
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