I have a 96 evo 4 and am thinking that the engine may be swapped how would I be able to tell and if it has been swapped how do I know what it was from?
Thanks tyler

 

Why do you think it's swapped?

There are only minor differences in the Evo 4 to Evo 6 motors. If the longblock was swapped, you'd really have to dig into it to find out which one it was, and honestly, it doesn't make that much difference.

 

I was just trying to make sure I know what I have. Also I got a iacv that I was told was off of the same car but it was different. I took one off a different motor I think out of a 5 that works. Also is the iacv supposed to pull apart like this?

 

Also when I did my timing belt and stuff I noticed some numbers written with a yellow paint pen and more numbers in white elsewhere on my block

 

Might help: http://www.lancerregister.com/showthread.php?t=226959

 

I tried to snap some pics. To me it looks like ti but ti isn't on that thread, what do you think?
Thanks for the help so far btw

 

Looks like ti to me and that's not a option in that thread, maybe tj what do you think? It's hard to get in there to see what it is.
thanks for your help so far!

 

Since all the Evo IVs start with T, I would think that TI is pretty much guaranteed to be an Evo IV engine; the list isn't entirely complete. If your VIN is around the middle of Evo IV production, I think it's a very good possibility it's your original engine, too.

The writing could be timing belt information, or it could be a junkyard Evo IV motor, but at least you know that it's an Evo IV motor, and the electrical wouldn't have been changed. The V/VI got some cooling and oiling upgrades that help with reliability, but it's not worthwhile to add these to a healthy motor.

 

Awesome thanks for the help

 

Just found this in the same area, now I'm unsure of my engine again 😂 Looks like MD to me but that's also not in the other forum list

 

That's a Mitsubishi part number, not an engine code. It corresponds to an Evo 4 power steering pump bracket.

Mitsubishi part numbers mostly start with MD/MR/MB for just about everything.