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4G63 swap into Plymouth Arrow

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zsn0w

Proven Member
37
3
Feb 14, 2017
Cincinnati, Ohio
So, I've had my mind set on a Plymouth Arrow (Mitsubishi Lancer Celeste) for awhile now. It's super hard to find one of these, much less a working one. The bigger problem with that is the fact that the stock 4G52 engines are a pain to find. On top of that, if I could find one that ran, finding parts and documentation to repair it would be rough. So, I figured a 4G63 swap could be a good option.
I have it on good authority that the stock engine mounts will fit a 6 bolt Plymouth Sapporo (wide block?) 4g63t from the early 80s and the transmission should bolt up without any problems. The manual transmissions for the Arrow were the KM110 4 spd, KM 119(also seen it as 115, but I don't think that is correct) 5 spd, and sometimes the KM132 is references as being used on later years, as well. Documentation for the 110 and 119 is pretty scarce, but if it's bolting to the same engine and driveshaft as the 132, I assume they are similar enough to be replaced by the D50 like a KM132 can be.
This is where I am unsure, however. First, any verification of this assumption would be helpful, as my plan was to use a D50 5 spd.
It is my understanding that I should be able to use the Plymouth Arrow body and driveshaft with a D50 5 speed manual transmission, 1G DSM 2.0 Liter 4G63t, 1G DSM ECU, 1G DSM MPI Relay, and a 1G DSM wiring harness. I believe that the only problems I'll have to deal with to get the thing running are the clutch (I am unsure of how the cable system will work in this usage or if I'll have to use the hydraulic workaround mentioned on projectzerog), the flywheel selection (which the plenty of available documentation could help me with of course), and the well-documented coolant drain change thing mentioned on the projectzerog. Is this all correct? of course, I'll also have to change out all the gauges, etc. on the interior, but that is a lot easier for me than the massive undertaking of swapping out the entire front half of the drivetrain.
I don't think this will be easy, of course, but I've researched it enough that I feel that it will be fairly simple from a parts gathering standpoint as far as big components are concerned. I think I've narrowed this down well enough that I should be able to gather all of this without too much unnecessary trouble. Any info/advice/help is appreciated. Thanks!
(Bonus, semi unrelated question that I had just been wondering about: How possible would an AWD 1G DSM swap be to a car like this? With the extra space in the engine bay for a car like the Arrow, it seems like it wouldn't be super difficult, relative to other AWD swaps of course, to plop the entire AWD drivetrain in there if the suspension could be adapted to accept it. I am NOT planning on doing this, as I don't have the time nor money to do something that crazy, but I was just wondering what was really preventing something like this for a car like the Arrow. Thanks again.)
 
A Plymouth FIREARROW, was the last car I raced in SCCA, I sold it about 12 yrs ago, this came with the 2.6, 5 sp, and 4w/disc brake.
When I wanted to get back into road racing I tried to purchase the car back, but the owner was fixing it up to race in another class.
What you are wanting to do, is exactly what I had in mind, even back then it was difficult to find info on these cars.
Dont know about the 2.0 engine, but if I remember the 2.6 is a narrow block it is the opposite of the Starion.
Project0 would be where you can find all this info.
This would be a nice project, as they are already RWD. You would be dealing with a lot of small problems and a lot of rust also the rear end will be suspect for a 4g63t motor.
Google Matt Foreman he is truly an Arrow guru, and very nice guy, he does deal with the belt engines, but he may be able to help you out.
There is also a guy in FT. Laudardale first name Bob but his last name skips my mind at the moment.

Mandy
 
Awesome! Thanks for the info. I'll send Matt an email and ask him about it for sure. It's nice to see that others have had the same thought though and I'm not hopelessly stretching for something near impossible.
Thanks again!
Zack
 
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