Flowbench #'s from my home port job
12-11-2005, 06:09 PM
#1
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Flowbench #'s from my home port job Started with a set of SLP CnC'd 241 castings...
Stock vs Ported Int. in CFM
.100 - 71 - 93
.200 - 121 - 147
.300 - 207 - 212
.400 - 238 - 246
.500 - 269 - 270
.600 - 280 - 283
.650 - 282 - 286
Stock vs Ported Exh. in CFM
.100 - 36 - 38
.200 - 74 - 110
.300 - 114 - 151
.400 - 149 - 195
.500 - 160 - 216
.600 - 168 - 226
.650 - 175 - 230
On the intake side I just blended the CNC marks and opened up the bowls to match the valve seat. On the exhaust side, I "D" shaped the ports and opened the bowls to the valve seats as well.
All done at 28" of water and with about 1" of modeling clay to simulate some intake runner.
Stock vs Ported Int. in CFM
.100 - 71 - 93
.200 - 121 - 147
.300 - 207 - 212
.400 - 238 - 246
.500 - 269 - 270
.600 - 280 - 283
.650 - 282 - 286
Stock vs Ported Exh. in CFM
.100 - 36 - 38
.200 - 74 - 110
.300 - 114 - 151
.400 - 149 - 195
.500 - 160 - 216
.600 - 168 - 226
.650 - 175 - 230
On the intake side I just blended the CNC marks and opened up the bowls to match the valve seat. On the exhaust side, I "D" shaped the ports and opened the bowls to the valve seats as well.
All done at 28" of water and with about 1" of modeling clay to simulate some intake runner.
12-12-2005, 03:47 PM
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Thanks for the good deal on the heads 
File fit all my rings, installed new cam bearings and plastigauged the crank today, will be assembling the bottom end tomorrow
File fit all my rings, installed new cam bearings and plastigauged the crank today, will be assembling the bottom end tomorrow
