A customer would like to replace the old 4AG 16v engine in his AE86 with a newer 4AG 20v,but as the 20v is from a front wheel drive Levin/Trueno,when it being fitted to rear wheel drive format,the distributor will hit the firewall,there are 3 solutions to this,which is knocking the firewall for the distributor to clear,make a distributor relocation kit or use a Standalone engine management system to convert the ignition system form distributor to wasted spark or direct fire (individual coils).
A better alternative is the third option which is using a standalone engine management system.R.N.R Autosport have suggested the owner to go for direct fire coil on plug ignition system.In this case the coil used is from Nissan SR20 S15 Silvia.ECU of choice is the Adaptronic e420d.This little ecu is packed of features for its relatively cheap price.
Coil harness fabrication
Here is the finished custom made harness,all wires are soldered and shrinked wrap the entire loom.
From another angle
Fitted on the engine,the wiring literally hidden.
Another view
Another angle from top
Put the car up on the Dyno Dynamics Chassis Dynamometer
The result of the conversion.The engine is totally stock standard except for extractor,coil on plug converision and the custom made trumpets.A good result considering its a RWD car which has a higher transmission losses,not to mention this is tuned on RON 95 petrol.The fuel consumption is greatly decreased,more than 14km/L on highways (as reported by the owner). Ecu running flawlessly everytime,no matter cold or hot start.
Congrats to the owner,a rare classics,AE86 is a gem.This project is will not end here,the owner has a few more plans for his baby.So watch out this blog guys.Thanks.
