1973 PORSCHE 911 S / 16 PHOTOGRAPHS
Flat-six engine & Bosch MFI.
Follow the 1973 Porsche 911 S engine from removal to refitting, with close views of the cooling fan, intake hardware and mechanical fuel injection.
Browse all 47 photographs →
About these photographs & factory references
The engine-out photographs reveal components normally crowded into the rear compartment. Compare the exposed intake hardware with the later views showing the black air-cleaner housing back in place. Photograph pages link to related workshop films and service records where available.
Read about Bosch mechanical fuel injection · Consult the factory engine specifications
Removal & access
Engine & fuel system
Rear engine-compartment preparation at the lift
With the car positioned between the lift posts, work begins around the rear engine compartment.
View photograph details →
Engine & fuel system
Engine and gearbox removal on a trolley
The engine and gearbox come down together onto a trolley, opening up access to the rear of the car.
View photograph details →
Engine & fuel system
Empty engine compartment viewed from below
Seen from underneath, the empty engine compartment reveals its depth and the space around the rear suspension.
View photograph details →
Engine & fuel system
Rear engine compartment before refitting
Behind the rear seats, the empty compartment awaits the flat-six. The open lid frames a view normally filled by the engine and its air cleaner.
View photograph details →On the engine trolley
Engine & fuel system
Cooling fan and covers on the removed flat-six
The belt-driven fan sends cooling air over the engine. Beside it, the covers and surrounding metalwork are accessible with the flat-six out of the car.
View photograph details →
Engine & fuel system
Engine with air-cleaner housing removed
Without the air-cleaner housing, the intake and fuel-system hardware are exposed above the engine.
View photograph details →
Engine & fuel system
Cooling fan, belt and crankshaft pulley
The fan dominates this view. Below it, the crankshaft pulley drives the belt that turns the fan and alternator.
View photograph details →
Engine & fuel system
Intake hardware, fuel lines and engine wiring
A second angle reveals how closely the intake hardware, fuel lines and wiring are arranged around the flat-six.
View photograph details →
Engine & fuel system
Flat-six on its trolley behind the raised car
The flat-six rests on its trolley behind the raised car, with room to work around both.
View photograph details →
Engine & fuel system
Bosch MFI fuel lines, intake hardware and linkages
Fuel lines, intake hardware and throttle linkages surround the cooling fan on the mechanically injected flat-six.
View photograph details →
Engine & fuel system
Engine work with the air-cleaner housing fitted
The black air-cleaner housing is back above the engine as work continues around the intake assembly.
View photograph details →
Engine & fuel system
Engine tinwork and intake assembly before refitting
With the engine on the trolley, the cooling tinwork, exhaust connections and intake assembly can be inspected before refitting.
View photograph details →Refitting & adjustment
Engine & fuel system
Reinstalled engine with lifting trolley beneath
The flat-six is back behind the rear axle, with the lifting trolley still beneath the car.
View photograph details →
Engine & fuel system
Cooling fan and air cleaner in the engine bay
The cooling fan and black air-cleaner housing are back in place beneath the rear lid.
View photograph details →
Engine & fuel system
Installed-engine work with protective bodywork covers
Protective covers drape over the rear bodywork while the mechanic works around the installed engine.
View photograph details →
Engine & fuel system
Engine bay during mechanical fuel injection tuning
The flat-six is back in the car, with the engine lid raised for access. Following the valve-clearance adjustment, Rich is working through the mechanical fuel injection settings.
View photograph details →