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Old 03-16-2008, 09:30 PM   #1
milcic07
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Default DCCD vs non-DCCD tranny

I have the choice between jdm Sti Tranny Version 8 DCCD and jdm Sti tranny Version 8 Non-DCCD...

Question is which one should I get..? The Non dccd tranny has about 5,000 miles vs the dccd tranny has about 25,000 miles...(Same Price)

Has anyone had any experience with the jdm non-dccd sti tranny...? The split for the non-dccd is about 50-50 from what I have read.. I use the car as a daily driver (07 wrx). I figure If I get the non-dccd tranny it's less I have to worry about.. Oh and I also will be gettting r-180 rear diff, axels, and Brembo brakes Front\Rear.. Can not wait!!!



Thanks...
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Old 03-17-2008, 12:01 AM   #2
FourOnTheFloor65
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I would get the DCCD one. That is what I have. I got a V8 Spec C DCCD one a while back. For the same price there is no reason to get the non-DCCD one. 20,000 miles doesn't mean much to me at least. DCCD does though. The non-DCCD ones use a Viscous fluid coupler like the regular WRX ones do but they are a little stronger. The DCCD will allow for a lot more grip in all driving situations. Since you live in Pittsburgh and have snow the DCCD will allow you to lock it in the case where you would get stuck where a viscous one will slip a good bit. You can't go wrong with the DCCD and a spiider controller.

Ryan
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Old 03-17-2008, 08:42 AM   #3
Ryanr1490
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anyone know the torque split on a non-dccd?
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Old 03-17-2008, 11:38 AM   #4
milcic07
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Quote:
Originally Posted by FourOnTheFloor65 View Post
I would get the DCCD one. That is what I have. I got a V8 Spec C DCCD one a while back. For the same price there is no reason to get the non-DCCD one. 20,000 miles doesn't mean much to me at least. DCCD does though. The non-DCCD ones use a Viscous fluid coupler like the regular WRX ones do but they are a little stronger. The DCCD will allow for a lot more grip in all driving situations. Since you live in Pittsburgh and have snow the DCCD will allow you to lock it in the case where you would get stuck where a viscous one will slip a good bit. You can't go wrong with the DCCD and a spiider controller.

Ryan
Thanks for the info. I just figured less miles on the tranny might be better off. Also do you use the Spiider DCCD option on your tranny?
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Old 03-17-2008, 08:38 PM   #5
FourOnTheFloor65
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Quote:
Originally Posted by Ryanr1490 View Post
anyone know the torque split on a non-dccd?
The non DCCD have a LSD of sorts. LSDs don't have a fixed torque split. Only open diffs do. So when a DCCD transmission is in open mode. Depending upon the year the V7 has a (45:55) V8 has (35:65) and V9 has (49:51). With an LSD torque split depends on the situation.

Ryan
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Old 03-17-2008, 08:40 PM   #6
FourOnTheFloor65
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Quote:
Originally Posted by milcic07 View Post
Thanks for the info. I just figured less miles on the tranny might be better off. Also do you use the Spiider DCCD option on your tranny?
I don't have a DCCD controller on my car yet but I will be getting a Spiider controller soon. The way it is now, open, sucks. I can't wait to get the controller but I have other projects that I am in the middle of now.

Ryan
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Old 03-17-2008, 09:20 PM   #7
milcic07
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Quote:
Originally Posted by FourOnTheFloor65 View Post
I don't have a DCCD controller on my car yet but I will be getting a Spiider controller soon. The way it is now, open, sucks. I can't wait to get the controller but I have other projects that I am in the middle of now.

Ryan
Be careful with that rear Diff
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Old 03-18-2008, 01:44 AM   #8
FourOnTheFloor65
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I have a R180 and I don't drive the car too much. I think it will be ok untill I get a controller.

Ryan
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Old 03-19-2008, 06:53 PM   #9
2ndGearFling
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I have an 06 sti trans on my r160, the split isnt so bad. Ive been beating on it a bit without problems.
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Old 03-20-2008, 04:41 PM   #10
Turbo4me
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My R160 lasted a little over a year before the diff stripped.

If you just want to install the trans and forget about it, go non-DCCD.....if you want to be able to adjust the split, go DCCD. If I had it to do over, i would have gone non-dccd.

Curt
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Old 03-20-2008, 09:40 PM   #11
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Of course I'm biased so take it for what it's worth, but I don't think it's great advice to simply say that you'd go with non-dccd if you had to do it over again. You can say that, and I can respect that for your driving needs it is possibly quite true.

However, there is a good reason the STi comes with DCCD as a standard feature, it simply works better than a mechanical diff when used over a wide range of driving situations. If you've ever driven a car with a really strong mechanical center diff you'll appreciate the day to day driveability of a DCCD diff especially at low speeds and when turning.

DCCD or non-DCCD shouldn't/won't affect the lifespan of an r160 in a 6 speed swap. However, an r160 may have an extremely shortened lifespan in a "DCCD" 6 speed swap with no controller...especially in a more powerful car where it is even easier to spin the rears.
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Old 03-20-2008, 09:51 PM   #12
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Quote:
Originally Posted by FourOnTheFloor65 View Post
I don't have a DCCD controller on my car yet but I will be getting a Spiider controller soon. The way it is now, open, sucks. I can't wait to get the controller but I have other projects that I am in the middle of now.

Ryan
Spiiders controller will be your best investment yet for your subie!!!! I just had it put in a few days ago and tested it out on dirt roads by my house and its AWESOME !!!!!!!
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