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What Final Drive do I have? (92 Summit AWD Wagon)

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93'ColtTsi

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Discussion starter · #1 ·
I have a 4g63t swapped 92 Eagle Summit AWD van. (same as Mitsubishi Expo LRV)

It ORIGINALLY came with a 2.4L SOHC 8V 4g64 engine mated to a 4 speed Automatic AWD tranny. The code off the stock tranny is W4A32-1.

I have not been able to find any info on what the final drive is on the rear end in this car (Summit AWD Van)

I am currently planning on using a 91 Galant Vr4 Tranny (W5M33-NQBK) that has a 4.93 final drive. I wanna make sure the rear end in this summit is also a 4.93 final drive ratio so I dont blow up the center viscous coupling in the tranny.

I just have had mixed results with finding info on the STOCK final drive ratio for the summit AWD van, ANY help would be apreciated..


Is there another way to find out my final drive by spinning the driveshaft and counting the turns of the tires or something so I can make sure im going to be okay?

Thanks guys
 
Discussion starter · #2 ·
Well i found the info i was looking for, Pulled from the 92 Eagle Summit AWD Factory Service manual: :

W4A32
4g64
1st - 2.551
2nd- 1.488
3rd - 1.000
4th - 0.685
rev - 2.176

Reduction ratio
Primary - 1.228
Front Dif - 3.600
Transfer - 1.090

Looking in the rear axle section:
Reduction ratio is listed at 3.307


Sooooo bad news for me. Looks like the AWD AUTO summits use the same final drive ratio as the automatic DSM's. That means the GVR4 tranny and transfercase that i have WILL NOT work with the rear end i have, unless i wanna burn up my center viscous coupling. (Unless the previous owner installed a 5-speed DSM rear end into it without mentioning it).



Hopefully i can swap in the rear diff gearset or bolt up the complete pumpkin (housing) from a spare 1G AWD 3 bolt rear end i have to the summit.
 
Discussion starter · #4 ·
Phoned the previous owner today and for some reason I thought the car was originally a automatic.

Turns out that it was originally a 5-speed car!!

Good news for me as that means my rear diff IS the right ratio!

yayyy
 
Discussion starter · #6 ·
I bought the car already with the 4g63t in it,so I wasn't sure of how the car was setup before.

I THOUGHT the car was a automatic when it was stock, but i was wrong. The car was originally a 5-speed car, so the rear diff it came with has the same ratios as a 5-speed AWD 1G DSM.

There is no hole where the master cylinder used to be... all the 5-speed stuff is still there cuz it never was removed. The car has NEVER has a auto tranny in it.

Lucky me!
 
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