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| 1.5 tall x 1.45 wide left wall is into head bolt boss |
| flow figures corrected to 28" water .1" 48 cfm .2" 90 cfm .3" 123 cfm .4" 150 cfm .5" 170 cfm .6" 184 cfm .7" 191 cfm .8" 195 cfm |
| 1.3" tall x 1.36" wide Smallest of tested ports on this page |
| cfm @ 28" water corrected .1" 48 cfm .2" 91 cfm .3" 127 cfm .4" 153 cfm .5" 174 cfm .6" 185 cfm .7" 193 cfm .8" 199 cfm |
| This port is semi finished. right roof is lower than left roof and the vane is big. There are gouges every where |
| 1.3" tall x 1.38" wide Vane is smaller than port 2 above |
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| cfm @ 28" water corrected .1" 50 cfm .2" 91 cfm .3" 124 cfm .4" 147 cfm .5" 163 cfm .6" 172 cfm .7" 185 cfm .8" 195 cfm |
| FLOOR WAS FILLED AS IN PORT # 2 |
| Early ports tested on home made bench using Audie Flow Quick meter |
| flow bench |
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This work is in a constant state of refinement. Use these ports for reference. There are much better and more efficient ports posted elsewhere on this site. These ports were ground with out aid of a bench |
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