Engine Conversions


3.2 TDi5 Conversion

The JE 3.2 TDi5 conversion is available for post-2012 Defenders and involves installation of a 3.2 in-line 5-cylinder Ford power unit featuring variable vane turbo fitted with JE 3.2-specific intercooler and complimented by a JE-designed ITG induction system, all controlled by a bespoke ECU. 

Output: 228bhp at 3300rpm, torque 576Nm at 2300rpm, with 430Nm available at 1600rpm. 

Transmission is managed by either a heavy-duty Ford 6-speed manual or JE-developed Ford 6-speed Tiptronic auto, with a JE-designed centre console and electronic gear lever.

With all that torque on offer we both recommend and fit JE reinforced prop shafts and the increased power justifies fitment of the JE Big Brake kit with six piston calipers.


V8 Conversions

Our V8 conversations include Rover V8 4.5 (originally 3.5, 3.9 or 4.2), 4.8 or 5.0 litre (originally 4.0 or 4.6) engines, and depending upon whether carburettors or fuel injection are specified on the Rover V8, a reliable 250-350bhp / 400-450Nm. 

For motorsport applications we can exceed 400bhp. 


Alternatively, the JE 4.7 litre version of the excellent JLR Supercharged AJV8 offers up to 470bhp / 650Nm as the Zulu² conversion, or for a more extreme conversion, the incredible Roush Supercharged V8 installation for the Defender takes performance into another dimension with an output of up to 700bhp / 700Nm.

Defender 2.3 EcoBoost GDiT, Gasoline Direct Injection Turbo

Future-proof your Defender. 

Modern day requirements dictate that every vehicle manufacturer needs to have a model that pushes emissions and economy to the fore and JE has seized the initiative to produce an engine conversion to do just that, even if it is only relative economy when it comes to Defender. A combination of JE engineering experience and the availability of increasingly impressive OE manufacturer powerplants has led to our latest development for the Defender; JE’s Petrol 2.3 GDiT.


Based on the Ford Mustang 2.3 litre EcoBoost engine, the conversion is very quiet and smooth especially when mated to the six-speed automatic transmission and gives a very responsive drive experience from 307 bhp and 432 Nm. Your Defender can be legally certified as a petrol vehicle, with excellent performance and good fuel economy. This conversion is also offered with the manual gearbox option.