Flexcj5
09-26-2013, 01:13 PM
JHM has a great write up for the manual trans and tip isn't much different but here it is.
Tools:
3/8 drive ratchet
Two long extensions (wobble head helps)
T40 torx
6mm Allen
Bfh
Fluid transfer pump
Remove the 6mm Allen bolts holding the driveshaft to the tail housing, then attempt to remove driveshaft. Most peoples will require some coaxing from a hammer. Mine required 2 days, 2 cans of pb blaster, and finally an air hammer for ten minutes. It was completely seized/rust welded.
Once driveshaft is unbolted you can begin removing the 6 t40 bolts that hold the tail housing to the trans. 5 are fairly easy with the extensions. The very top bolt is a bit of a pain but it will come out.
When the bolts are mostly out, put a drain pan under the housing and break it loose from the trans. Gear oil will drain into the pan. About a quart I believe.
You can now remove the torx bolts entirely and slide the housing and diff off the tail shaft. It comes straight back a good ways and is fairly heavy so go easy.
Rear of trans
Note there is no spring like the manuals have
http://img.tapatalk.com/d/13/09/27/3ydyza6y.jpg
Diff inside housing
http://img.tapatalk.com/d/13/09/27/uta9u3an.jpg
Empty housing
http://img.tapatalk.com/d/13/09/27/asu6ejad.jpg
Old diff will lift out of housing and new one drops in onto the splines. Below is the JHM.
http://img.tapatalk.com/d/13/09/27/je9eremy.jpg
Install is reverse of removal. Fill the diff from the plug on the passenger side. Fluid pump makes it easier.
Driving impressions:
Butt dyno says torque transfer off the line feels very different, rear squats more under load. I'm gonna adjust my bilsteins to compensate for it.
The good:
Sharp turns from a stop (red lights) under hard throttle feel good. Very little under steer, hooks we'll and pushes through. I was squealing tires at wot. Mountain roads are a different kind of fun with this diff. It's closer to a rwd car handling wise. Highway driving and normal around town feel the same as it always has.
The bad:
I kind of expected this and it's hard to describe. Diff feels/sounds clunky. You definitely know it's there at low speed turns. It has the ratcheting feel of a locked rear end being used on the street.
I expect to see a lot more wear and tear on the rear end itself, cv axles and diff mount.
Would I recommend this mod? ABSOLUTELY! If you enjoy the twisties and spirited driving go for it. Car is a different beast now.
Tools:
3/8 drive ratchet
Two long extensions (wobble head helps)
T40 torx
6mm Allen
Bfh
Fluid transfer pump
Remove the 6mm Allen bolts holding the driveshaft to the tail housing, then attempt to remove driveshaft. Most peoples will require some coaxing from a hammer. Mine required 2 days, 2 cans of pb blaster, and finally an air hammer for ten minutes. It was completely seized/rust welded.
Once driveshaft is unbolted you can begin removing the 6 t40 bolts that hold the tail housing to the trans. 5 are fairly easy with the extensions. The very top bolt is a bit of a pain but it will come out.
When the bolts are mostly out, put a drain pan under the housing and break it loose from the trans. Gear oil will drain into the pan. About a quart I believe.
You can now remove the torx bolts entirely and slide the housing and diff off the tail shaft. It comes straight back a good ways and is fairly heavy so go easy.
Rear of trans
Note there is no spring like the manuals have
http://img.tapatalk.com/d/13/09/27/3ydyza6y.jpg
Diff inside housing
http://img.tapatalk.com/d/13/09/27/uta9u3an.jpg
Empty housing
http://img.tapatalk.com/d/13/09/27/asu6ejad.jpg
Old diff will lift out of housing and new one drops in onto the splines. Below is the JHM.
http://img.tapatalk.com/d/13/09/27/je9eremy.jpg
Install is reverse of removal. Fill the diff from the plug on the passenger side. Fluid pump makes it easier.
Driving impressions:
Butt dyno says torque transfer off the line feels very different, rear squats more under load. I'm gonna adjust my bilsteins to compensate for it.
The good:
Sharp turns from a stop (red lights) under hard throttle feel good. Very little under steer, hooks we'll and pushes through. I was squealing tires at wot. Mountain roads are a different kind of fun with this diff. It's closer to a rwd car handling wise. Highway driving and normal around town feel the same as it always has.
The bad:
I kind of expected this and it's hard to describe. Diff feels/sounds clunky. You definitely know it's there at low speed turns. It has the ratcheting feel of a locked rear end being used on the street.
I expect to see a lot more wear and tear on the rear end itself, cv axles and diff mount.
Would I recommend this mod? ABSOLUTELY! If you enjoy the twisties and spirited driving go for it. Car is a different beast now.