Does anybody know if an inline 4 has been fitted to replace an EA81 (or thinks it could be done ?)

Sorry, this isn’t a Honda forum! 

Seriously though, why? Do an Eaj swap instead - it’s been tried, tested and proven! 

Mind you, I have heard of someone putting a Peugeot diesel in an L series but that’s all the info I got. 

Cheers

Bennie

No it hasn’t, yes it can. There are no kits or write ups or easy methods.  You’ll need mad skills or a thick wallet - which was your plan? Custom mounts, trans adapter, and fittings for radiator, AC, alt, steering, and then custom wiring. 

The cars are about 35 years old...I'm sure everything you can think of has been done (and probably more). The only one I can think of was a Brat on a Toyota frame, with the Toyota drivetrain, but if you open that can of worms, there have been V8s, V6s, and more....

Anything is possible (a close friend of mine has a turbo LS V8 in a '98 Legacy GT, and he's not even close to the first), but there are a million variables based on the details of different engines, different budgets, different skills, and different goals.

Generally speaking, the stock engine crossmember is very intrusive into the engine bay for anything other than a horizontally-opposed engine. A good fabricator could make a tube crossmember that is less intrusive, but you're limited on steering rack placement without getting into steering geometry. With a lift, you could move that all down away from the body, and get quite a bit more space.

The next challenge, is a boxer 4 is a very short (lengthwise) engine, which is what allows it to be pushed forward enough to put the front diff behind it. If you ditch the front drive, and are just going RWD, you can push the engine way further back. Then you have to consider rear diff strength.

you would need the entire subframe from the doner car and like sead above some mad fab skills you would mostlikly need a laydown style engine like a vw or a toyota van motor a toyota or honda or nissan are more upright except the van toyota layed it down under the front seats threse just not alot of virticle clearence ov course if you lift it there would be more room or if you cut a hole in the hood anything will work im gona try and shoe horn a 260 v8 in a loyale someday lol

put a motorcycle V-twin in it!

2 hours ago, 1 Lucky Texan said:

put a motorcycle V-twin in it!

ive seen that it actualy works pretty good and you get all kinds of gears to play with about 30 of them lol