96 galant motor swap into my 94
Well I've been MIA that last week or so because of a busy work schedule and I've been stressing about my car. On Saturday, March 14th, I was about 50miles from home about 2 miles from my exit going to a job, cruising around 65mph on the highway, when my front end started shaking intermittently. I pulled over as fast as I could and killed the motor. After some snooping around, I cranked the motor back up and it couldn't hold idle. When I would give it gas to keep it alive, it was rough and barely driveable.
Long story short, my #2 cylinder can barely hold 20psi. Adding oil and redoing a compression check I can maybe get 40psi out of it. Piston is shot. Moderate signs of coolant in the oil as well. I had to drive it home, and literally 50ft from my garage the thing felt like it blew up. Lots of metal clunking sounds, more bad noises, tons of shaking. Aweful. This motor has bit the dust!
My car is a 94 with 196,000 miles on original motor. I never hit 200K!!!!! I've been through nitrous and a turbocharger with this thing, it was born and raised in Miami, FL for almost 12 years, it has seen the snowy lands of New Jersey for a couple years, and carried me all through high school in San Diego, CA. My father purchased the car brand new in 1994 and took immaculate care of it. When I got my license at 16 it was mine and he got a new car.
I swore I would never leave this car until it's completely wrecked in an accident, and I'm sure as hell not going to leave it now. Times are tough, money is lower than ever, and work is more rare than food in Africa, but this car has carried me through my life and it deserves every bit of care it wants.
So I picked up a 96 galant motor from the local mitsu wrecking yard. It has 112K miles and compression is 200/175/200/175 on the cylinders.
http://socallifestyle.com/engineswap/3blocks.jpg
On the left is a 4G64 DOHC block (DOHC head not pictured); DOHCStunr's original motor from his black GS. The cylinders are already overbored 0.010".
Middle is my car with the currently broken 1994 4G64 SOHC.
On the right is my new 1996 4G64 SOHC. Complete working motor with injectors and intake/exhaust manifolds.
Ahead of me is a long week of pulling the old motor and in with the new. I will be posting pictures and notes as I go along of the differences between the 94 and 96. So far I know the 96 is an OBD2 block with a map sensor on the intake plenum. Mitsubishi part# MD305600.
http://socallifestyle.com/engineswap/mapsensor.jpg
I do not have this sensor and plan on swapping my old intake manifold over, as the vacuum lines are slightly different as well. According to mitsu this sensor only came on cars 96 and newer, so I'm sure this wouldn't work with my shitbag of an ECU anyways.
I've also noticed there is a crank angle sensor at the crank on this 96 motor; I know the 94's crank angle sensor is built into the distributor along with the cam angle sensor. Seth has informed the distributors are different and I have to swap mine over anyways.
Does anyone know of any other potential differences and problems?
