I bought a Honda Accord EX ​​91, throws some smoke from the exhaust, I'll change the engine, my questions are,
which process should I do to make the change?,
must be the same engine or should be of the same year?,

thanks

 

Just get the same engine for ease of process.

It'll come as F22A from JDM importers.

 

For year 91, how many different engines are?

Regards

 

f22a1 f22a4 f22a6 are the usdm engines and f22a is the jdm engine stamp.

The only thing you would possibly need to change is the exhaust manifold depending on if yours bolts up to it or not. Otherwise, just use your intake and exhaust manifold on it and be sure to put your timing belt components onto the jdm engine as it will be different as the jdm engines come with an auto tensioner. The usdm ones have a manual tensioner.

 

I check the engine is F22A4..., then f22a1, f22a4 and f22a6 is the same engine?

I will not have problems with the swap if the engine is any of these "USDM engines"?

Thanks