stickman
20+ Year Contributor
- 266
- 0
- Apr 10, 2002
-
Poulsbo,
Washington
I recently put a rod and my balance shaft through the side of my block and decided to get an Evo III longblock insted of replacing it with a 6-bolt. I figured I would take the time and list a few of the things I had to swap over from the old block to the eVO MOTOR.
Cams
The cams are almost identical except for one thing. The 2nd gen Cam sensor screws into the passenger side of the intake cam. The Evo motor has the cam sensor on the actual cam gear. Solution?? I pulled the cam out of the 2nd gen head and swapped it into the Evo head
I did pull out the micrometer to measure the lift on the cams and the 2nd gen has a higher lift than the evo. Not much but there is a difference. I didn't measure the exhaust cams though :-/
The valve cover has a few differences. It actually says Mitsubishi on it ;-D But for now my valve cover went back on, it was cleaner.
Intake manifold
The intake manifold on the evo has shorter runners and a bigger throttle body. The throttle cable connects on the opposite side of the throttle body. I just pulled the manifold, fuel rail and manifold bracket and replaced it with my 2nd gen stuff. It all bolts in just fine.I'm sure you could use the intake from the evo but I just wanted to get the motor back together. On a side not I have an evo manifold and throttle body for sale, PM me with an offer hahaha.
Exhaust Manifold
Since I am using a DNP tubular manifold and a small 16g, this was kinda a no brainer for me. My evo motor came with a smaller turbo than the 16g so I just pulled it off and replaced it with my exhaust parts. I did measure the prots and the exhaust ports on the head and manifold are the same height as my 2nd gen but they are about a 1/4 inch wider on the evo. Another side note, i have a small turbo from an Evo with the internal wastegate and an Evo manifold sitting in the garage, PM me if interested ;-)
Timing Belt
All of the timing components are exactly the same as the 2nd Gen. And yes it is still a pain in the arse to set the timing
I hate being one tooth off
. Balance shaft belt swaps over as well. The water pump was kinda crusty so I swapped my good one on there. Bolts up just fine.
Cooling System
Hmm, where to start. First off, the thermostat is exaclty the same. However; the thermostat housing is a bit different and the water neck that runs under your exhaust manifold is different as well. Again the parts swap over and bolt up fine. I swapped over all of my turbo lines as well. The oil cooler on the turbo is a little bit different. The lines were in different places, so I swapped that as well.
Power Steering
The power steering pump and bracket are different than the 2nd gen. I swapped mine over just because I don't want to have to buy a JDM power steering pump if the one on my car ever dies. If you do not change the bracket when you put the 2nd gen pump on, you will not be able to put one out of the 4 bolts back in when you tighten the belt.
A/C
Again the bracket for the a/c is different on the evo motor so I swapped my a/c pump and bracket over as well.
Motor Mounts
Finally I catch a break. The new block only has 1 motor mount on it and guess what??? It's exactly the same as mine, woohoo!!!!!
Alternator
Again, I pulled my bracket and swapped it over, just to be safe ;-) I did have to take my 3 month old alternator back to the parts store. For some reason a whole quart of power steering fluid cause a short in the alternator, who would have thought that??? Warranties rule!!!
Transmission/Flywheel/Clutch
All three bolt up fine and the crank is a 7-bolt in case you were not sure.
Oil pan
I think the oil pan is a bit deeper in the deepend and shallower in the shallow end. it's kinda hard to tell because my old one has about 4 hols in it. I do seem to have a bit more clearance while installing my transfer case though.
So all in all the swap went fairly well. I did have to replace a few more gaskets and O-rings than I had originally planned but better safe than sorry. The turbo seems to spool faster and the car seems more responsive. I don't know whether or not to attribute that too the motor being fresher, the exhaust ports or if the exhaust cam has a long duration or lift( did not measure that :-( ).
I hope this post helps anyone that is interested in getting a "JDM" engine. I only did it because it seemed like the best option for me at the time. Feel free to ask any questions if you have them. I will update later with pics. I seem to have misplaced my digi cam somewhere hahaha probably in a box full of car parts.
Cams
The cams are almost identical except for one thing. The 2nd gen Cam sensor screws into the passenger side of the intake cam. The Evo motor has the cam sensor on the actual cam gear. Solution?? I pulled the cam out of the 2nd gen head and swapped it into the Evo head
I did pull out the micrometer to measure the lift on the cams and the 2nd gen has a higher lift than the evo. Not much but there is a difference. I didn't measure the exhaust cams though :-/The valve cover has a few differences. It actually says Mitsubishi on it ;-D But for now my valve cover went back on, it was cleaner.
Intake manifold
The intake manifold on the evo has shorter runners and a bigger throttle body. The throttle cable connects on the opposite side of the throttle body. I just pulled the manifold, fuel rail and manifold bracket and replaced it with my 2nd gen stuff. It all bolts in just fine.I'm sure you could use the intake from the evo but I just wanted to get the motor back together. On a side not I have an evo manifold and throttle body for sale, PM me with an offer hahaha.
Exhaust Manifold
Since I am using a DNP tubular manifold and a small 16g, this was kinda a no brainer for me. My evo motor came with a smaller turbo than the 16g so I just pulled it off and replaced it with my exhaust parts. I did measure the prots and the exhaust ports on the head and manifold are the same height as my 2nd gen but they are about a 1/4 inch wider on the evo. Another side note, i have a small turbo from an Evo with the internal wastegate and an Evo manifold sitting in the garage, PM me if interested ;-)
Timing Belt
All of the timing components are exactly the same as the 2nd Gen. And yes it is still a pain in the arse to set the timing
I hate being one tooth off Cooling System
Hmm, where to start. First off, the thermostat is exaclty the same. However; the thermostat housing is a bit different and the water neck that runs under your exhaust manifold is different as well. Again the parts swap over and bolt up fine. I swapped over all of my turbo lines as well. The oil cooler on the turbo is a little bit different. The lines were in different places, so I swapped that as well.
Power Steering
The power steering pump and bracket are different than the 2nd gen. I swapped mine over just because I don't want to have to buy a JDM power steering pump if the one on my car ever dies. If you do not change the bracket when you put the 2nd gen pump on, you will not be able to put one out of the 4 bolts back in when you tighten the belt.
A/C
Again the bracket for the a/c is different on the evo motor so I swapped my a/c pump and bracket over as well.
Motor Mounts
Finally I catch a break. The new block only has 1 motor mount on it and guess what??? It's exactly the same as mine, woohoo!!!!!
Alternator
Again, I pulled my bracket and swapped it over, just to be safe ;-) I did have to take my 3 month old alternator back to the parts store. For some reason a whole quart of power steering fluid cause a short in the alternator, who would have thought that??? Warranties rule!!!
Transmission/Flywheel/Clutch
All three bolt up fine and the crank is a 7-bolt in case you were not sure.
Oil pan
I think the oil pan is a bit deeper in the deepend and shallower in the shallow end. it's kinda hard to tell because my old one has about 4 hols in it. I do seem to have a bit more clearance while installing my transfer case though.
So all in all the swap went fairly well. I did have to replace a few more gaskets and O-rings than I had originally planned but better safe than sorry. The turbo seems to spool faster and the car seems more responsive. I don't know whether or not to attribute that too the motor being fresher, the exhaust ports or if the exhaust cam has a long duration or lift( did not measure that :-( ).
I hope this post helps anyone that is interested in getting a "JDM" engine. I only did it because it seemed like the best option for me at the time. Feel free to ask any questions if you have them. I will update later with pics. I seem to have misplaced my digi cam somewhere hahaha probably in a box full of car parts.
.