02 wrx trans hydraulic conversion
Posted: Wed Mar 27, 2019 8:43 pm
Finally I have finished my trans swap. This is just a small write up of how involved it was to install the hydraulic clutch n trans without the factory holes in the firewall. I couldnt find much info on this so I'm hoping this might help somebody else trying to do the same thing.
We all know most ej transmissions bolt right up to any ej engine. There wasnt any issues connecting the transmission, bolting the crossmembers, rear diff, and axles were all the easy part.
The more difficult part was getting the correct alignment for the hydraulic clutch. What I ended up doing is using a donor or "firends" car so I could trace the body lines on the fire wall and mark out the holes. Took me about 3 to 4 time of tracing to get my template just about perfect. All ibused was a piece of paper to start then transferred that over to some cardboard. Held the cardboard up inside of my car and maked out the holes with a sharpie. Took a drill and drilled out the holes to proper size. Luckily I did it right the first time and got my holes to be in the perfect position just like factory.
Another small modification I had to make was the wiring harness on the inside of the cabin under the dash. Being an automatic from factory, theres a white plastic piece holding it up but exactly in the way for the pedal assembly to mount. So I had to cut and break the plastic far back enough so I could tuck the wiring up above the pedals and not in the way. Wasnt too bad, and I only copped one wire in half while doing it, that wasnt real easy to solder. So try not cut anything lmao.
The wrx clutch reservoir bolts up nicely but the pressure lines have to sit ontop of the trans and theres nowhere else to mount them. It sits still and doesnt move around. All in all the clutch system works way better than expected and the trans isnt all beat up like most wrx trans are. If you have any questions then go ahead and ask away. Hope my pictures are well enough layed out for you all.
Clutch I used was a stage 2 clutch, I can pull it up if anyone's interested which one I went with. The pressure plate was a little heavy for the first 2 shifts, after that I got use to it while driving. Cant believe how much of a difference it makes going from a cable to a hydraulic clutch.
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We all know most ej transmissions bolt right up to any ej engine. There wasnt any issues connecting the transmission, bolting the crossmembers, rear diff, and axles were all the easy part.
The more difficult part was getting the correct alignment for the hydraulic clutch. What I ended up doing is using a donor or "firends" car so I could trace the body lines on the fire wall and mark out the holes. Took me about 3 to 4 time of tracing to get my template just about perfect. All ibused was a piece of paper to start then transferred that over to some cardboard. Held the cardboard up inside of my car and maked out the holes with a sharpie. Took a drill and drilled out the holes to proper size. Luckily I did it right the first time and got my holes to be in the perfect position just like factory.
Another small modification I had to make was the wiring harness on the inside of the cabin under the dash. Being an automatic from factory, theres a white plastic piece holding it up but exactly in the way for the pedal assembly to mount. So I had to cut and break the plastic far back enough so I could tuck the wiring up above the pedals and not in the way. Wasnt too bad, and I only copped one wire in half while doing it, that wasnt real easy to solder. So try not cut anything lmao.
The wrx clutch reservoir bolts up nicely but the pressure lines have to sit ontop of the trans and theres nowhere else to mount them. It sits still and doesnt move around. All in all the clutch system works way better than expected and the trans isnt all beat up like most wrx trans are. If you have any questions then go ahead and ask away. Hope my pictures are well enough layed out for you all.
Clutch I used was a stage 2 clutch, I can pull it up if anyone's interested which one I went with. The pressure plate was a little heavy for the first 2 shifts, after that I got use to it while driving. Cant believe how much of a difference it makes going from a cable to a hydraulic clutch.
Sent from my SM-G960U using Tapatalk