my project go forward.
Beside the aerodynamic mods i modified the engine.
Currently a 55PS Mono-Injection 1.3l assembly are installed.
modified "3F" 75HP Multipoint 8V
-new DIY Manifold (oscillating tube charging)
-new DIY Exhaustsystem
-higher compression ratio
-modified head ("Back Cut" Valves, polished exhaust port)
-modified controlbox (no wide-open-throttle enrichment, deceleration fuel cutoff from 1200U/min [currently 2000U/min], mached to "super" gasoline)
-114Nm at 2000U/min !
-Max 131Nm at 4500U/min
-Peak Power 71kW (95Hp)
-BSFC 256g/kWh at best point (about 2500U/min), 265g/kWh average from 2000-4500U/min
-97Nm at 2000U/min
-Max 99Nm at 3200U/min
-Peak Power 55kW (75HP)
-BSFC 263g/kWh at best point (about 2000U/min), 275g/kWh average from 2000-4500U/min
currently Engine (AAV 55HP)
-88Nm at 2000U/min
-Max 95Nm at 3500U/min
-Peak Power 45kW (55HP)
-BSFC 272g/kWh at best point (about 2000U/min), 280g/kWh average from 2000-4500U/min
So i save only 5% fuel, but the engine is almost new after the rebuild, so the difference is bigger.
Also i could drive with a looooonger gearbox
by the way, ive double the output power
The picture show the difference between stock and mod.
Sorry for the grid, the two diagramms had not the same y-axis.