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Repair Manual

The Repair Manual page contains an almost complete copy of an original factory service manual for the 1977 E21.

E21 Spotter's Guide

Megasquirt engine harness diagram for the first engine harness I made using the Ford EDIS controller.

Megasquirt engine harness diagram for the second engine harness I made using direct control of the ignition system and provisions for direct control 4-coil ignition.

Coil on plug ignition harness diagram.

Wire holder drawing for Coil on plug ignition harness.

Here is coolant temp sensor calibration data for using the coolant temp sensor from an E30 318i with Megasquirt.  This is an Excel spreadsheet.

This document shows the correct orientation of the trigger wheel, TDC, and the VR sensor for using the Ford EDIS module on an M10 engine.

A vacuum diagram showing how I have set up the vacuum distribution pipe and idle air controller for use with ITBs. 

Manufacturers data sheet for the hall effect sensor I used for my cam position (and future vehicle speed) sensors.

Bosch data sheet for the MAF sensor that I am using for my Megasquirt MAF conversion.

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