Rebuild Rover SD1 V8 for Rover P6B
I original engine in my Rover P6B 1975 had run approx. 200.000km (125.000 mil). The compression was not that good. But after RVS-tech engine treatment (see on this web) It was much better and after carburetor adjustments it showed ok spark plugs colors and fuel consumption.
The original engine serial number 45121451D cr 9.25:1
Though I wanted to get hold of an engine with lower miles. I got an SD1 3500 engine that had had probably gone 80.000 km (50.000 mil) and had run on a five-gear manual gearbox. It showed good compression on all cylinders.
(SD1 engine Serial number 10A39495 (10A00001A – SD1 manual 9.35:1 cr – 1976-1987)
I decided to repack and change the CAM with one for the 3.9 liter which should show a little better performance at high rev and still have the good low rev torque for the 3 speed Borg Warner model 65 automatic transmission.
(Automatic Gearbox Borg Warner Model 65 RSB914 serial number 013-13497)
I experienced some differences in the Rover P6B and the SD1 engine configuration.
Here is what you need for the P6B instead of what is standard on the SD1.
- P6B have mechanical fuel pump. SD1 is for external electrical low pressure fuel pump
- Lower oil sump designed for the transvers exhaust pipe
- Lower oil strainer
- Shorter oil dip stick
- Shorter water pump
- Pulley torque 200nm (just info)
- Distributor different bottom tap
- Oil pressure gauge different to the multi pressure gauge in SD1
- Inlet manifold 5 mm lower. Heighten the Throttle axial mount
- Cylinder head cover is higher which gives less space for the generator
- Ignition coil pre-resistor only when coil is for 9 volts
- SD1 have more space around spark plugs (very good)