TURBOCHARGER
Mike DeMoss of Forward
Motion supplied a custom Enforcer 1 (Garret T3/T4) hybrid
turbocharger. It's a T3 (.63 A/R) Chrysler turbine section mated to the larger T04E
compressor section, running a 2.003-inch (51 mm) diameter inducer and a 3.200-inch
(81 mm) diameter exducer, also known as a "46 trim."
This combination offers
low inertia and the fast boost response of the T3 with the higher flow of
the T4 compressor delivering the desired horsepower, torque and
throttle response. for the heavier minivan application.
Ironically, the TO4E was originally designed by Garret for long-haul
diesel truck use. It is an incredible compressor, running close to 75% efficiency across most of the engine's
planned operating range from a low
of 3-to-6 PSI to a over-boosted high of 16-to-18 PSI.
This means charge air heating is minimal (reducing intercooler size) and
the shaft power requirement of the compressor is low, making the turbo
fairly lag-free and allowing a free-flowing turbine wheel and exhaust
housing to be used. This helps reduce power-robbing and heat-generating
backpressure caused by more restrictive turbine wheels.
A 2.5-inch swing-valve is used. Rick Diogo supplied a custom 3-inch down pipe.
A 3-inch Random Technology
Super High Flow catalytic converter feeds a 3-inch JRB/FWD
Performance mandrel-bend exhaust system.