The turbocharged
3.6 litre engine of the 1993 964 Turbo 3.6 was the long-awaited turbocharged
development of the new M64 engine. The detailed specifications are below
together with it's predecessors for comparison:
|
M30/69 (964 Turbo) |
M30/69SL (Turbo
S) |
M64/50 (T3.6) |
M64/50S (T3.6S) |
Bore |
97mm |
97mm |
100mm |
100mm |
Stroke |
74.4mm |
74.4mm |
76.4mm |
76.4mm |
Displacement |
3299cc |
3299cc |
3600cc |
3600cc |
Compression
Ratio |
7.0:1 |
7.0:1 |
7.5:1 |
7.5:1 |
Power (PS)
@ RPM |
320/5750 |
380/6000 |
360/5500 |
385/5750 |
Torque (Nm)
@ RPM |
450/4500 |
490/4800 |
520/4200 |
520/5000 |
The 3.6 litre unit continued
with the Bosch K-Jetronic CIS fuel injection system as used on the 3.3
litre engine although it was further optimised for use on the 3.6 litre
cars. However, it did not make use of the dual spark plugs introduced
for the normally aspirated 3.6 litre unit, retaining the single distributor
as used on the 3.3 Turbo engines. The dual spark plug innovation was introduced
on the normally aspirated engines to facilitate efficient fuel burn with
the very high compression ratio. The turbocharged engines had no need
for such a high compression ratio since the fuel charge was already under
compression from the turbocharger allowing the added complexity of the
dual spark plug and distributor system to be avoided.
The 1994 Turbo S engine made
use of more aggressivecamshafts and a larger turbocharger as well as a
more efficient 4-pipe exhaust to further enhance power output although
flexibility suffered a little.
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