My Electronic Ignition & Injector TB Project
Posted: Wed Jul 19, 2017 7:00 pm
After very positive and good feedback of this thread:
elan-mods-f31/should-change-ecu-who-has-done-t37677.html
I decided to install an electronic ignition and injection system in my Elan Sprint. In this thread I would like to show how my design looks like, the parts I used, the cost (and problems) involved and maybe I encourage others ?
To complete the whole thing, it will certainly take me a while but I try to report here as I get along with new parts installed. First of all I will install ignition only, if that works fine I will add the injection part (semi-sequential).
By the way, all descriptions are given to my best knowledge and I appreciate feedback and corrections (my mother language is not English...).
There are few goals in this conversion:
1) Everything must be reversible to original condition without 'major' effort.
2) I want better cold & hot start, better fuel economy, wider torque range but same output power
3) All selected sensors and parts shall use when ever possible the AMP mini timer type of connector
(due to availability and price)
4) Because of limited access to tools and machines, I try to design as simple as possible, however
access to a lathe is required.
5) I try to keep parts cost as low as possible (but hopefully with common sense)
The ignition-only system is composed of the following main parts:
=================================================================
1 OMEX600 ECU and open end wire harness
1 Trigger wheel & sensor (Ford 36-1)
1 Throttle position sensor (I use the same type for DellOrto and Injector TBs)
1 Ignition coil pack (Ford Type A Connector)
1 Air temp sensor
1 Coolant temp sensor
1 Air pressure sensor (I live in a mountain area)
Adding Trigger wheel and sensor:
=================================
- Manufacture the parts according my drawings. Remove the crank shaft pulley and insert the spigot (which serves as crank shaft replacement).
- When drilling the hole for the splint pin, it is essential that the trigger wheel is absolutely centered to the pulley. At the head side of the pulley bolt/screw use duct tape to fill the gap between the trigger wheel center hole (12mm) and the bolt (7/16" 11mm). There should be no play.
- Put everything together and place the trigger wheel with the missing tooth at about 9 o'clock and the pulley TDC at about 2 o'clock. Drill a hole of 0.2mm under size of the splint pin into trigger wheel, shim and pulley in one go.
- Increase the hole in the trigger wheel and pulley to splint pin diameter size and press the pin into the shim (see pics). There shouldn't be any rotational movement between trigger wheel and pulley.
- the sensor bracket is designed to hold a sensor of about 38mm length with a gap of about 0.5mm to the trigger wheel.
elan-mods-f31/should-change-ecu-who-has-done-t37677.html
I decided to install an electronic ignition and injection system in my Elan Sprint. In this thread I would like to show how my design looks like, the parts I used, the cost (and problems) involved and maybe I encourage others ?
To complete the whole thing, it will certainly take me a while but I try to report here as I get along with new parts installed. First of all I will install ignition only, if that works fine I will add the injection part (semi-sequential).
By the way, all descriptions are given to my best knowledge and I appreciate feedback and corrections (my mother language is not English...).
There are few goals in this conversion:
1) Everything must be reversible to original condition without 'major' effort.
2) I want better cold & hot start, better fuel economy, wider torque range but same output power
3) All selected sensors and parts shall use when ever possible the AMP mini timer type of connector
(due to availability and price)
4) Because of limited access to tools and machines, I try to design as simple as possible, however
access to a lathe is required.
5) I try to keep parts cost as low as possible (but hopefully with common sense)
The ignition-only system is composed of the following main parts:
=================================================================
1 OMEX600 ECU and open end wire harness
1 Trigger wheel & sensor (Ford 36-1)
1 Throttle position sensor (I use the same type for DellOrto and Injector TBs)
1 Ignition coil pack (Ford Type A Connector)
1 Air temp sensor
1 Coolant temp sensor
1 Air pressure sensor (I live in a mountain area)
Adding Trigger wheel and sensor:
=================================
- Manufacture the parts according my drawings. Remove the crank shaft pulley and insert the spigot (which serves as crank shaft replacement).
- When drilling the hole for the splint pin, it is essential that the trigger wheel is absolutely centered to the pulley. At the head side of the pulley bolt/screw use duct tape to fill the gap between the trigger wheel center hole (12mm) and the bolt (7/16" 11mm). There should be no play.
- Put everything together and place the trigger wheel with the missing tooth at about 9 o'clock and the pulley TDC at about 2 o'clock. Drill a hole of 0.2mm under size of the splint pin into trigger wheel, shim and pulley in one go.
- Increase the hole in the trigger wheel and pulley to splint pin diameter size and press the pin into the shim (see pics). There shouldn't be any rotational movement between trigger wheel and pulley.
- the sensor bracket is designed to hold a sensor of about 38mm length with a gap of about 0.5mm to the trigger wheel.