4A-GE 20V Inline-4 Engine Miniature

A detailed 3D printable tribute to one of the most iconic high-revving engines.
致敬传奇高转速引擎的高细节可打印模型。

 Introduction | 项目介绍

This project is based on an original 3D scan model of the Toyota 4A-GE 20V engine, sourced from:

Bremar 3D Scan Store
https://www.bremar3dscanstore.com/cad-models/p/toyota-4age-20-valve-engine

本项目基于 Toyota 4A-GE 20V 发动机的三维扫描模型，原始扫描来源于：

Bremar 3D Scan Store

Model Modification | 模型重构与优化

The original scan model has been:

• Cleaned and remeshed
• Geometry corrected and simplified
• Surfaces refined for FDM printability
• Wall thickness adjusted
• Overhangs optimized
• Structural elements rebuilt

In addition, I redesigned and added:

• Separate intake trumpets
• Exhaust headers
• Display base
• Modular assembly structure

原始扫描模型经过以下处理：

• 网格清理与重构
• 几何修正与简化
• 表面结构优化以适配 FDM 打印
• 壁厚重新设计
• 悬垂角度优化
• 结构重建

并新增设计：

• 独立进气喇叭
• 排气头段
• 展示底座
• 模块化组装结构

This is not a raw scan upload — it is a mechanically adapted and print-optimized version.

本模型并非原始扫描文件的直接发布，而是经过打印优化与结构重构后的版本。

Printing | 打印建议

Layer Height | 层高：0.2mm
Infill | 填充：15–25%
Supports | 支撑：排气头段建议开启
Material | 材料建议：

• Silver filament for headers
• 排气建议银色或金属色

• Black for cam cover
• 气门室盖建议黑色

• White / Grey for block
• 缸体建议白或灰色

Resin printing will provide higher detail if preferred.
如使用光固化打印，可获得更高细节表现。

Assembly | 组装说明

Glue is required for final assembly.
⚠️ 本模型组装必须使用胶水固定。

Due to fine components and printer tolerance variation, CA glue (super glue) is recommended.

由于结构精细且打印公差存在差异，建议使用瞬干胶固定。