Updated more SOHC weirdness to post #1.
EJ251 SOHC "Polyquad"
Staggered Valve sizes Intake: 35.05mm @ 45* seat into radius & 36.05mm @ 30* seat into radius w/ 6* deshroud
Exhaust: 30.5mm & 31.5mm 45* seats into radius
Port Matched to TGV (yep empty TGVs on a SOHC) + asymmetrical ASF Port & Polish
Polished & staggered deshrouded chambers
SF-110
7" H2O corrected to 28"
Comments: Intake is EXTREMELY turbulent in both directions, I was after some "twirl" to aid in ethanol atomization for better burn but this seems a bit extreme. This turbulence is what I attribute the loss of intake flow to... as an added odd note; peak flow in reverse on the intake was 306 CFM from .400-.500".
I can only speculate that these heads would be a poor pairing with an NA setup & bunches of overlap, the dyno will tell us how they do with some FI goodness.
Code:
Lift Intake Flow Dogleg Exhaust Straight Exhaust
.050 51 31 50
.100 98 88 93
.150 143 125 129
.200 188 161 174
.250 218 183 204
.300 241 194 225
.350 253 199 230
.400 257 203 244
.450 268 205 246
.500 276 - -