Measuring port flow
#5
Senior Member
I built one for about $250. It's an orifice type with home made manometers.
I never calibrated it, but it measures very repeatably and allows me to compare before and after.
Here's a link to a flow bench forum,
PTS Flowbench Forum - Index page
lots of good info.
I've not had the chance to flow ports on a rotary. I've thought about it and seen posts that it's a waste of time. The total cross section of the rotary ports in relation to the displacement would make for a pretty low velocity flow compared to piston engines. So really porting on a rotary is less about increasing flow and more about port timing. But, matching the flow to balance AFRs between rotors, may be worthwhile.
I never calibrated it, but it measures very repeatably and allows me to compare before and after.
Here's a link to a flow bench forum,
PTS Flowbench Forum - Index page
lots of good info.
I've not had the chance to flow ports on a rotary. I've thought about it and seen posts that it's a waste of time. The total cross section of the rotary ports in relation to the displacement would make for a pretty low velocity flow compared to piston engines. So really porting on a rotary is less about increasing flow and more about port timing. But, matching the flow to balance AFRs between rotors, may be worthwhile.
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