VIOLENT\6
12 second N/A Slant 6?
Just did a calc W/standard 3.445" bore 2.2L pistons & at .062" quench it drops CR to 11.99:1.
3.445/2 = 1.723 X 1.723 = 2.97 X 3.14 = 9.33 X 4.175 = 38.9 co in /.061 = 637.7cc
637.7 + 58 = 695.7/58m = 11.99:1 CR
Total displacement is 233 cu in.
I think if I utilize concave head valves & pay attention to other details I can drop CR even further. If I can get another 6cc of combustion chamber voluume W/O increasing quench height, I can get to just below 11.0:1 or perhaps a bit lower.
At that CR think I could run 93 octane W/cold plugs & a 160° TSTAT & still use aggressive ignition timing.
I probably could still run nitrous if I can somehow program in 4° of spark retard W/electronic ignition.
3.445/2 = 1.723 X 1.723 = 2.97 X 3.14 = 9.33 X 4.175 = 38.9 co in /.061 = 637.7cc
637.7 + 58 = 695.7/58m = 11.99:1 CR
Total displacement is 233 cu in.
I think if I utilize concave head valves & pay attention to other details I can drop CR even further. If I can get another 6cc of combustion chamber voluume W/O increasing quench height, I can get to just below 11.0:1 or perhaps a bit lower.
At that CR think I could run 93 octane W/cold plugs & a 160° TSTAT & still use aggressive ignition timing.
I probably could still run nitrous if I can somehow program in 4° of spark retard W/electronic ignition.