How many injectors are in a Jaguar V12?
When being developed via Lucas for the Jaguar V12, the inability of the original D Jetronic ECU to drive twelve injectors was easily overcome by adding an amplifier, mounted over the radiator, conveniently dividing the injectors into four groups of three.
Is the EFI system on the Jaguar V12?
The V12 was designed from the outset to have electronic fuel injection (EFI) using a system made by AE Brico but the system was cancelled at a late stage. Jaguar hurriedly concocted the four carburettor installation to see the engine through its first few…
How does fuel injection work in a Jaguar?
The injectors are simply precision solenoid operated valves which are opened for a brief period once per engine cycle, when they introduce a fine conical spray of fuel into the inlet ports, just upstream of the inlet valves.
Do you need an ECU upgrade for a XJ12?
Modification of the fuel ECU is necessary to suit the improved engine breathing and is included in the price. The SE ECU upgrade can be also added at a favourable price. The TT System is available as the basic front section for the XJS or XJ12 if the existing over-axle pipes and rear silencers are in good condition.
How to increase the performance of a Jaguar V12 engine?
A brief guide to cost effective ways of increasing the performance of the Jaguar v12 engine 1 Replacing the Early Four Carburettors of the V12 E Type (or XJ12) with Electronic Fuel Injection. 2 Upgrading the Fuel Injection System. The Super Enhanced ECU Upgrade. 3 Upgrading the Induction System.
The V12 was designed from the outset to have electronic fuel injection (EFI) using a system made by AE Brico but the system was cancelled at a late stage. Jaguar hurriedly concocted the four carburettor installation to see the engine through its first few…
What kind of engine does a Jaguar XJ12 have?
The simplest incarnation was in the carburettor fed E Type and XJ12 models, but the engine was designed for fuel injection from the start, and as soon as a suitable system was available it was fitted to the XJ12, the XJ-S was injected from the start.
Why did the Jaguar V12 have hot re-start problems?
Early systems suffered from hot re-start problems due to having very small bore fuel rails which are prone to fuel vaporisation in the heat, the later larger bore system is a useful upgrade.