Home » Racing Engines » Jaguar XK6 "C" type head
Specifications
Introduced in 1951
Click here and here
Dimensions
Cylinders arrangement: inline 6
Strokes: 4
Bore x Stroke: 83.0 mm x 106.0 mm, 3.268" x 4.173"
Capacity: 3442cc, 210ci
Compression ratio: 9.0:1
Construction materials
Cast iron block without cylinder liners
RR50 aluminium "C" type cylinder-head with hemispherical combustion chambers and red cam cover
EN16 steel crankshaft with 7 main bearings
Steel connecting rod
Cylinder-head
Click here and here and here
Dual overhead camshafts (DOHC), chain driven with 2 stage double chains
2 valves / cylinder - 12 valves total
35o angle between inlet valve and vertical
40o angle between exhaust valve and vertical
44.5mm inlet valve diameter, 1953: 47.6mm
41.3mm exhaust valve diameter
Aspiration
Natural
1951: 2 x SU H8 Carburetors
1954: 3 x Weber 45 DCO3 Carburetors
Ignition
Firing order, 1 - 5 - 3 - 6 - 2 - 4, with number 1 cylinder being at the rear of the engine (flywheel)
Spark plug gap 0.56mm
Contact breaker point gap 0.30mm
Cooling and lubrication
Water cooled, cooling fluid capacity 14 lt
Wet sump with a Hobourn-Eaton eccentric-lobe oil pump, oil capacity 13 lt
Torque values
Bolts | Foot Pounds | kg.m |
---|---|---|
Cam bearing caps | 15 | 2 |
Connecting rod caps | 37 | 5.1 |
Main bearing cap | 83 | 11.5 |
Cylinder head nuts | 54 | 7.5 |
Flywheel | 67 | 9.3 |
Models used and Output
Year | Model | Induction | Compression ratio | Power | Torque |
---|---|---|---|---|---|
1951 | Jaguar C Type | 2 x SU H8 | 9.0:1 | 210 HP / 157 KW @ 5750 rpm | 298 Nm / 220 ft lbs @ 3900 rpm |
1954 | Jaguar D Type | 3 x Weber 45 DCO3 | 9.0:1 | 250 HP / 187 KW @ 5750 rpm | 325 Nm / 240 ft lbs @ 4000 rpm |