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Old 11-20-2012, 11:14 PM   #1
Rodwrx23
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Default Driveshaft Shop Carbon Fiber Install and Review 04-07 Sti

After years of drooling of this piece, I finally scrounged up enough change together and bought this baby. I searched for install instructions, but couldn't find any so decided to combine my review and install for anyone else curious about how th throw this baby on.

Install difficulty: 3/10

Tools needed:
Jack
4 Jackstands
14mm socket and wrench
12mm socket (ratcheting open ended wrench is easier)
Rag or towel )for dribble of tranny fluid that comes out when driveshaft is removed)

1) Jack up all 4 corners of the car




2) Remove Midpipe (not required but I decided to do it for the extra room)

3) Remove the 2 14mm bolts retaining the center joint of the stock driveshaft



Make it look like this




4) Remove the 6 14mm bolts from the rear diff protector plate



6) Put the car in gear to prevent the driveshaft from rotating. Alternatively, tell your wife to push the brake pedal for you.
Using your 12mm open ended ratchet, remove the 4 12mm nuts on the propeller side of the rear joint to the rear diff. While the car is in neutral (or no brakes applied), rotate the shaft and put it in gear (or have your wife hold the brake) so you can get to 2 at once. Rotate to access the other two and repeat.

I forgot to take a pic of the removal, so here is one of them reinstalled on the Carbon shaft . Note how the flat part of the bolt faces inward and makes contact with a lip on the joint.



7) Pull the driveshaft out of the tail section of the tranny by pulling back. A little bit of oil will drip out so throw a towel or rag underneath.

8) Make fun of your stock driveshaft for being so heavy and goofy



9) Reinstall in reverse order and enjoy!!!
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Old 11-20-2012, 11:17 PM   #2
Rodwrx23
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Here are some pics to show the tons of clearance this shaft has











There is a little exposure from the tail section but I don't beleive it will be an issue

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Old 11-21-2012, 07:17 AM   #3
WRXLTD
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Tell us how it performs on the street for God's sake !!!!!

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Old 11-21-2012, 08:43 AM   #4
Rodwrx23
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Quote:
Originally Posted by WRXLTD View Post
Tell us how it performs on the street for God's sake !!!!!

I will once I put some miles on it. I'm having trouble uploading before and after videos
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Old 11-23-2012, 11:16 AM   #5
Rodwrx23
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So after a couple hundred miles on this baby, all I can say is WOW! The car just wants to go at any rpm in any gear. Taking off in 4th gear at 2k rpm at 15 mph is no problem. No more chattering or vibration and it just picks right up.

The only concern I have is that I keep smelling tranny oil burning. My guess is because of the exposed part coming out of the tail section but I've had the car up on stands while running and can't see any leaks. Hopefully it's just the little bit if tranny oil that got on my wrapped DP during install still burning off.
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Old 11-23-2012, 09:17 PM   #6
blehhh
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Did you have that 'bounce' feel in lower gears when on/off throttle?

I've done all of the drivetrain mods on my 2012 WRX, and I think the 2-piece driveshaft is still a major weakness.
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Old 11-23-2012, 10:49 PM   #7
Rodwrx23
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Quote:
Originally Posted by blehhh View Post
Did you have that 'bounce' feel in lower gears when on/off throttle?

I've done all of the drivetrain mods on my 2012 WRX, and I think the 2-piece driveshaft is still a major weakness.
No more bounciness or herky-jerky feeling. It is a hell of a lot smoother. I just put a stock clutch back in too and they balanced the whole assembly for me.
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Old 11-23-2012, 10:56 PM   #8
blehhh
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Quote:
Originally Posted by Rodwrx23 View Post
No more bounciness or herky-jerky feeling. It is a hell of a lot smoother. I just put a stock clutch back in too and they balanced the whole assembly for me.
Someday I'll get one... someday.
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Old 12-04-2012, 01:42 PM   #9
Driveshaft shop
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Nice write up, thanks
__________________
The Driveshaft Shop
1531 S. main st
Salisbury, NC 28144
800-564-2244

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Old 12-04-2012, 07:02 PM   #10
Rodwrx23
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Originally Posted by Driveshaft shop View Post
Nice write up, thanks
Thank you guys for making this awesome piece of automotive pornography! I've fantasized about having one for years.
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Old 12-14-2012, 01:48 PM   #11
fourseasonsandles
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Thanks for this. I am planning to get a CF shaft from DSS in the spring. Just what I was looking for!
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Old 12-29-2012, 12:02 AM   #12
Monkey king
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So did you notice any gain in MPG on this mod?

This is on one of my to do lists for my 05 STI and I'm glad to see your happy with the investment.
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Old 12-29-2012, 03:16 AM   #13
WaterfordRex
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I love step #8 hahaha. Has the burning smell gone away? Youre not leaking any fluid from the trans?
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Old 12-29-2012, 09:24 AM   #14
Rodwrx23
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Quote:
Originally Posted by fourseasonsandles View Post
Thanks for this. I am planning to get a CF shaft from DSS in the spring. Just what I was looking for!
You're very welcome. I made it because I couldn't find one.

Quote:
Originally Posted by Monkey king View Post
So did you notice any gain in MPG on this mod?

This is on one of my to do lists for my 05 STI and I'm glad to see your happy with the investment.
I did not notice any increase in mpg. Just much better driveability, throttle response, and reduced noise.

Quote:
Originally Posted by WaterfordRex View Post
I love step #8 hahaha. Has the burning smell gone away? Youre not leaking any fluid from the trans?
It did once I replaced the output shaft seal. $8 from the dealer and basically a reinstall of the shaft.
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Old 01-09-2013, 11:02 PM   #15
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What is the deal with the gap between the ds and the transmission? I just bolted mine up, noticed the same gap, and assumed I had been sent the wrong length. Before complaining I figured I'd check other installs. Your's is the second write up I have seen that shows the gap/exposure between the transmission and driveshaft. I haven't seen any pictures showing a more flush install, so I'm going to assume it's normal for dss driveshafts.
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Old 01-09-2013, 11:27 PM   #16
Rodwrx23
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Yup, it's normal for them. As long as you're not leaking any fluid because of a bad seal, don't worry about it. It won't hurt anything.
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Old 01-10-2013, 03:33 PM   #17
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Quote:
Originally Posted by 10MTN-bugeye View Post
What is the deal with the gap between the ds and the transmission? I just bolted mine up, noticed the same gap, and assumed I had been sent the wrong length. Before complaining I figured I'd check other installs. Your's is the second write up I have seen that shows the gap/exposure between the transmission and driveshaft. I haven't seen any pictures showing a more flush install, so I'm going to assume it's normal for dss driveshafts.

In for results on DSS paired with ej20
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