Toyota 4A-GE 20V Group A

Overview

This is a very simple and stright forward guide that will show you how to make the Toyota 4A-GE 20V ‘Silvertop’ Group A engine, or at least as close as I could make one in Automation.

Engine Family

SET YEAR TO 1998
Block – Inline 4
Block Material – Cast Iron
Heads and Valves – DOHC 5
Head Material – Aluminium

Displacement – 1,587.087cc (96.85in³)
Bore – 81.001mm (3.189in)
Stroke – 76.987mm (3.031in)

Bottom End

Crank – Billet Steel
Conrods – Lightweight Titanium
Pistons – Lightweight Forged
Variant Capacity – Set capacity to maximum
Quality – 15

Top End

Compression – 13.0:1
Cam Profile – 100
VVT – All Cams
Quality – 15

Fuel System

Fuel System – Multi Point EFI
Configuration – Per Cylinder
Intake – Race
Fuel Type – 95 AKI (88 MON/102 RON) unleaded
Mixture – 12.6
Ignition Timing – 86
RPM Limit – 10,800 RPM
Quality – 15

Exhaust

Headers– Race Tubular
Exhaust – Single, No Valves
Diameter – 63.5mm (2.5in)
Catalytic Converter – High Flow Three-way
First Muffler – None
Second Muffler – Reverse Flow
Quality – 15

Finished Engine