Since the EJ series of engines came out in our Subaru's there has been a stream of owners of older models replacing the old school and far less efficient EA engine in their cars.
Almost every thread on the EA engine where an owner wants to get a little more out of the EA engine there will be the post "just EJ it". Not all EA owners want to go EJ. Why not?
I think I have some answers to it.
1/ Modifying a car with a larger engine or an engine than what the car came out with (even as an option) has in some places eg Australia, requirements like an engineers report. For those not accustomed to this it is a pain in the butt. It costs a lot of money for an engineer to crawl all over your car making sure the engine mounts are strong enough, chassis can take the power etc.
2/ You usually cant just "throw another heavier and larger engine into another car" if you want to do it right. Take the English Ford Escort. It originally came out with an 1100cc engine. Then through its development it have many models right up to the Lotus powered twin cam model (I had 2) where it had beefed up brakes, diff, steering, larger wheels radiator and suspension and body stiffening. That's because the manufacturer didnt just throw the Lotus motor in the car. It transformed the car to take the engine in ALL areas.
With the Brat for example I've read how you have to 'modify' the chassis rails to fit the EJ engine. Does this weaken the car? There would likely be another 50 kgms or 100lbs extra weight on the front end with the EJ engine. What about bigger radiator? thermo fans ECU, wiring etc.? It all adds up. So to do all this right you should beef up the suspension to cater for the extra weight. I once beefed up a rear suspension of a Valiant and the new harder shockers nearly punched a hole through the floor.
So here starts the 'snowball effect'. You should then ad plates between the top of the shockers to the inner guard where they mount. Extra front weight should also call for wider wheels.
Common EJ engines that are put in Brats/Brumby's are now reaching 20 or more years old. So you do an engine swap with an engine that could be towards the end of its life....out it comes again. More work.
My point is this. Not everyone wants to "just EJ it" for the above reasons. But there are more reasons.
Many ute owners are quite happy to waddle along in their underpowered eA engine and when the opportunity arises make some basic modifications to get a few more horses out of it. Some dont want wider wheels. Somejust want it as a farm machine like it has served them for the last 30 years.
Last but not least- some like to do the valve clearances in 10 minutes, not fiddle with timing chains belts and a fuel injection system that turns you Mr Hyde into a Subaru Jeckyl. Some like to look into an engine bay and actually see the engine.
So whenever we get a "just EJ it" guy here you, the one faithful to the old eA engine can just point him to this rant rather than explain it all.
I've read a lot of pro's for EJ'ing a car but not many con's. Perhaps when the EJ powered Brat's chassis starts to crack and needs welding my point will be proven.