ENGINE GEOMETRY
Displacement
325.2 ci / 5.33 L
Mean Piston Speed @ 6000
18.4 ft/s
Dynamic CR
8.93 : 1
MAP RANGE
RPM Axis (Columns)
RPM columns
31 (500 – 8000)
MAP Axis (Rows) — psig
↑ boost
MAP rows
16 (-14.7 to 31.0 psig)
Total grid size
496 cells (31 × 16)
COMBUSTION TUNING
THERMAL / INDUCTION
DYNO CALIBRATION
Heat transfer + finite burn + blow-by. Street: 0.73–0.80. Race: 0.80–0.92.
IMEP loss per °² from MBT: η = 1 − K × (θ₀ − θ)². Default 0.0008. Range 0.0005–0.0015.
Chen-Flynn Friction (FMEP = A + B·Sᵣ + C·Sᵣ²)
FMEP @ 6000 RPM
2.228 bar
Timing loss @ 10° retard
0.1% IMEP
FUEL
Stoich AFR
9.8 : 1
Autoignition Temp
720 K
Charge Cooling
35 K
Laminar Flame Speed
0.54 m/s
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