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TOMATO RACING
Photo from
John lim
Supercharged 20Valve 4A-GE
Though 20 valves have been built for maximum response and power as an NA engine, with proper design, time and money, it can be supercharged. It's almost guaranteed to rip out the drive axle splines on a rear wheel drive Corolla...but will post some impressive drag-strip times...
Basic components:
Aftermarket supercharger, custom piping and manifolds, Custom ECU, radiator
upgrade, intercooler (optional), etc...
Copyright © 1979-1999 Ray Hall Turbocharging
Turbocharged 4A-GE 20 Valve
Basic Components:
Custom manifold, Custom ECU, additional injectors/controller, larger
capacity fuel pump, BIG radiator, intercooler, low comp pistons, Boost
controller, turbo-timer, and many other expensive stuff.
Photo from
John lim
Turbocharged 4A-GZE. (Twin charged)
Using turbo as well as a supercharger, it is the most complex form of
4A-G, it is really expensive and resource hogging to setup, however, once
correctly built, it gives the engine massive torque curves and allows you
to use very large turbine to really trash the chassis. An impressive
piping layouts allow even the owner to get confused which way the air travels...
A common horsepower figures in the 350+ with unequalled torque characteristics.
A 4A-GZE placed in a car that never came with one...An AE86? KP? Tercel? the choice is yours.
Using the stock layout and ECU, the 4A-GZE is a reliable alternative to heavily modified NA 4A-GE. With Toyota quality basically all intact, it can provide reliability and power needed to use on a daily driver. Converting from a NA, you will need a higher capacity fuel pump, and ECU for the 4A-GZE's correct version, homemade harness (modified factory harness), all factory peripherals for the GZ, Larger capacity radiator, electric fan, and a little patience and pipe making guy.
With light tune, it can put out mild 200 hp with very usable torque.
4A-GE with Carburetors
Provides flexibility and ease of replacement. The sounds emanating from it when properly tuned cannot be beat. Popular conversions include Mikuni-Solex, and Weber applications. In Japan, Keihin FCR carburetors from motorcycles, allow it to put out 170hp at 8500rpm.
A Turbocharged 16valve with 5A-GE kit from HKS
Larger stroke on a 4A-GE, the 5A displaces 1.7 liters. This HKS Turbo kit was originally sold for the 16 valve 4A-GE back in the late 80's. This motor being tested for 250 reliable horsepower for road race and autocross, where flat torque curve and usability is more needed than maximum power.
The 5A-GE kit was sold by HKS in the mid 80's for the AE86 and AE82, separate kit from the turbo.
Photo
from John Lim
Turbocharged 16 valve 4A-GE
This used to be the most popular setup for boosting the power of a 4A-GE. Though the 4A-GZE is becoming the more popular conversion these days, the turbo 4A-GE is still very effective when set up correctly and does give you possibility of infinite power output...to the point of where the engine can't take it anymore... Boost is addicting but even a 4A-GE can take only so much...be careful out there!