Five ways to make it better
keep it cool 1
High under-bonnet temperatures mean that a healthy cooling system is paramount, so a thorough overhaul is well worthwhile. If components are ageing, then a new radiator is a good starting point – a re-cored, high-performance item costs from £350-500 and will massively improve efficiency – along with a highperformance thermostat. A cooling system flush will pay dividends, too, and you could also consider a swap to waterless coolant.
just add fans 2
Happy that the cooling system is sound but still want additional protection? Then a pair of uprated electric fans is the way to go and there are various options on the market to suit. Specialist Cropredy Bridge Garage has a Bosch upgrade available for around £270, which it recommends teaming with an uprated 100amp alternator. The latter is worth having anyway – the kit costs £420.
upgrade the starter 3
Cranking over an engine as big as the Interceptor’s V8 is no easy task, and the original starter motor can prove a bit sluggish. The answer is to fit a modern high-torque replacement that will certainly improve starting on infrequently used cars, and in colder temperatures. Budget in the region of £200 for the part from a Jensen specialist.
check the wiring 4
Electrical issues are a pain with any classic, and Interceptors have more wiring than most, so it pays to ensure that it’s up to scratch. If there’s no evidence of recent refurbishment then having a specialist give the system a through health-check is money well spent. Early cars may benefit from additional fuses and relays to safeguard against future problems, and will mean that you can fit extra electrical equipment without overloading the system.
hit the Brakes 5
While the original braking system is adequate, you can’t really have too much stopping power, so consider upgrading the front calipers to four-piston items. A conversion from Cropredy Bridge Garage is around £1500. You can also fit larger front discs, although a switch to 17in alloy wheels will be required; budget around £1000 for set of good quality aftermarket items, and the size increase should make finding tyres easier and cheaper.