EA113 Oil Pump Balance Shaft Delete | DIY Guide

EA113 Oil Pump Balance Shaft Delete Modification

Disclaimer: This is a high-risk, advanced modification that can cause permanent engine damage if performed incorrectly. Proceed at your own risk.

The EA113 engine's oil pump module is known for a design flaw involving the balance shafts that can lead to sudden, catastrophic engine failure. This guide outlines a procedure to delete the balance shafts, aiming to improve long-term reliability.

🔧 The Procedure: An Overview

1. Physically cut the balance shaft from the oil pump assembly.
2. Permanently seal three internal oil channels within the pump housing using set screws.
3. Adapt and install a baffle plate from a 1.8T or 1.9 TDI engine, which requires trimming and drilling to fit.

🔩 Torque Specifications:

• Oil Pump Bolts: First, hand-tighten. Second, torque to 15 Nm. Finally, add a 90° turn.
• Chain Sprocket Bolt: 20 Nm + 90°

🛢️ Important Note on Oil Capacity:

This modification increases the engine's oil capacity by approximately 1.0-1.5 liters. Ensure you account for this during oil changes.