D-series OEM LSD?

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Old Nov 24, 2008 | 06:45 AM
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Default D-series OEM LSD?

Well first off my CRX is finally on the road again and very happy with it's performance and throttle response. Anyway I always thought D-series transmissions never came with a factory LSD. Well atleast the USDM models but my crx has a d16y8 with a 91 Si cable tranny and the bastard has always grabbed with both wheels. From a stop, E-brake, even just playing with the clutch and popping it at very low rpm's it grabs with both wheels. I have stuck out my head to verify even had people watching both tires and it always grabs with both wheels and on a turn it gives all power to the outside wheel.

Here is a picture of a launch at 3k

<a href="http://s478.photobucket.com/albums/rr144/daury2006/?action=view&current=IMG00169.jpg" target="_blank"><img src="http://i478.photobucket.com/albums/rr144/daury2006/IMG00169.jpg" border="0" alt="LSD"></a>

What gives oem LSD? I doubt it has an aftermarket one.

Oh and this patch was left with 18 inch Racinghart CR's
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Old Nov 24, 2008 | 06:47 AM
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if you cant see the image here is the URL

http://i478.photobucket.com/albums/r...6/IMG00169.jpg
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Old Nov 24, 2008 | 07:40 AM
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the only way you can have an oem lsd is if it were a dohc zc trans with the equal length half shafts. other then that, your only choice would be an aftermarket lsd.
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Old Nov 24, 2008 | 07:57 AM
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I kinda want to pull it apart to see what brand is in there because it definetly has LSD. I guess I have to wait till next year. When I rebuild it.
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Old Nov 24, 2008 | 08:19 AM
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Originally Posted by PISTONEMPIRE
I kinda want to pull it apart to see what brand is in there because it definetly has LSD. I guess I have to wait till next year. When I rebuild it.
i wouldnt say its a lsd. because on a good launch in my 4 speed i can get both winding out first gear. i had an si trans that did the same till i broke the case shifting. best to just pop out both axles and look inside that way rather than pulling a the whole thing. what are your plans for the car. lsd only really matter if you plan to auto-x or road race it. other than that just leave the stock tranny for a dd.
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Old Nov 24, 2008 | 08:36 AM
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I do plan on autoxing next spring. And it spins both wheels all the time not only on a good launch. as I said from a dead stop....with the e-brake.....and popping the clutch from any rpm even off idle it will spin both tires.
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Old Nov 24, 2008 | 08:46 AM
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well it is just possible that you have your genuine si cable trans then. you dont have equal length half shafts do you? if not we can single it down to a si trans.
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Old Nov 24, 2008 | 09:02 AM
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I know I have an Si transmission. and it does not have equal length half shafts. Well if it doesn't have LSD it sure does act like one. And Im not talking about letting the car roll back and revving the **** out of the engine and dumping the clutch to get the diff to lock. it does it all the time regardless of rpm and from a dead stop with no e-brake.
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Old Nov 24, 2008 | 09:04 AM
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i understand you, and yes honda built the tranny right from the get-go for an si. more than likely, its not an lsd equipped trans. but if your lucky enough to have found one with an aftermarket then kudos to you.
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Old Nov 24, 2008 | 09:23 AM
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If you want to know for sure, jack up the front of the car (both wheels off the ground) and put it in first, then turn one of the wheels by hand, and tell us what the other wheel does while you are turning it.
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Old Nov 24, 2008 | 09:40 AM
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Originally Posted by fireant
If you want to know for sure, jack up the front of the car (both wheels off the ground) and put it in first, then turn one of the wheels by hand, and tell us what the other wheel does while you are turning it.

that is not entirely full-proof. that is defendant on what type of lsd and if its spooled or not. i know this from other imports and old school muscle cars. my 83 rx7 had a swapped lsd and when jacked up, it rotate opposite from one another, although it was a true lsd.
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Old Nov 24, 2008 | 09:54 AM
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jdm d15b tranny had oem lsd, but it was a hydrolic app
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Old Nov 24, 2008 | 09:58 AM
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Originally Posted by projectTeG
jdm d15b tranny had oem lsd, but it was a hydrolic app
d15b sohc VTEC (civic Vti)
dohc ZC (ef6/7)
sohc ZC (integra TXi)

all japanese-only d-series engines had LSD options.

but you probably dont have a lsd. just happen to be hooking up both tires. its not impossible.

Last edited by Tyson; Nov 24, 2008 at 10:26 AM.
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Old Nov 24, 2008 | 12:07 PM
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I'm not going to jack up my car as it's as dark as midnight at 4:30 pm here and cold as ****. But the last time I ever did that I believe it was spinning the same way but at a slower pace. Don't quote me on that it was probably 2 years ago that I payed attention to if the wheels were spinning and what not.

Tyson:
I know the usdm d tranny's didn't come LSD that's why I asked why the hell mine grabs with both wheels all the time. When I take apart the tranny next year I will put in a quafe LSD anyway. Unless I find an aftermarket one all ready in there.

By the way jacking up the car is not foolproof. I would take off the axels but as I stated it's too damn cold out to "see if it has LSD" when I know it hooks up both tires already. It was just a matter of being curious as to why if it does not does it act like LSD "All the time" not just from roll back and locking it or e-brake. It does it all the time. I just wanted to know why would it act like it has LSD if it does not?
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Old Nov 25, 2008 | 04:25 AM
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Dude, i have an si tranny aswell, in perfect condition and if i launch from 4k+ i have NO traction what so ever, i also have light wheels but even with 15's both tires spun, trust me, its just the power in the si tanny. Ive even seen Dx's roast through first.
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Old Nov 25, 2008 | 04:54 AM
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Originally Posted by Stupidslow_ef
Dude, i have an si tranny aswell, in perfect condition and if i launch from 4k+ i have NO traction what so ever, i also have light wheels but even with 15's both tires spun, trust me, its just the power in the si tanny. Ive even seen Dx's roast through first.
what?
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Old Nov 25, 2008 | 05:00 AM
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Originally Posted by Stupidslow_ef
Dude, i have an si tranny aswell, in perfect condition and if i launch from 4k+ i have NO traction what so ever, i also have light wheels but even with 15's both tires spun, trust me, its just the power in the si tanny. Ive even seen Dx's roast through first.
What???? you have NO traction what so ever? By that are you saying it grabs with both wheels? which would ALWAYS have more traction than a one wheel spinner.

"it's just the power of the Si tranny." POWER? the Si tranny is basically a dx with a diff final drive. What's so powerful about that.

And as I already posted I know my car does not have LSD!!!!!! I just was just curious because it acted as if it did. Let this thread die!!
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Old Nov 25, 2008 | 09:18 AM
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Nnn oooo ooo oooo it can't die!
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Old Nov 25, 2008 | 09:24 AM
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I've got two wheels to spin in my Civic and Accord; they both don't have LSDs. :D

I just had to add: the hydraulic differentials will work fine in a cable transmission. Just make sure they're the correct bearing size(big bearing vs. small bearing) and it's shimmed correctly.
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Old Nov 25, 2008 | 09:55 AM
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useless thread
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Old Nov 25, 2008 | 04:42 PM
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well, Who makes an lsd fr d16a6 trannny?
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Old Nov 25, 2008 | 05:19 PM
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Launch with one wheel in the dirt
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Old Nov 25, 2008 | 05:54 PM
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Originally Posted by acmoc
well, Who makes an lsd fr d16a6 trannny?
Honda, Quaiffe, OPM, Mugen, Kaaz(?),Cusco(?), Wavetrak(?), Phantom Grip(?)
The L3 LSD's are definitely out there....
The Honda OEM LSD uses a larger size driveshaft at the tranny side, so you would have to use the japanese style half shafts, or you could custom build a set of driveshafts, with the larger shaft sizes on the inside(tranny side), and smaller (usdm hub) shaft sizes on the outside(knuckle side). Good Luck...
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Old Nov 25, 2008 | 06:16 PM
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Originally Posted by JOE BD-0
Honda, Quaiffe, OPM, Mugen, Kaaz(?),Cusco(?), Wavetrak(?), Phantom Grip(?)
The L3 LSD's are definitely out there....
The Honda OEM LSD uses a larger size driveshaft at the tranny side, so you would have to use the japanese style half shafts, or you could custom build a set of driveshafts, with the larger shaft sizes on the inside(tranny side), and smaller (usdm hub) shaft sizes on the outside(knuckle side). Good Luck...
I have a sohc non v-tec I got from h-motors.com
Iy came with the tranny, I'm not sure if it's exactly like the si d16a6. i was just shopping for one o and came up with qualfie and obx, thought I'd get the quaife but it says 35 mm bearings, not sure what all that's about.
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Old Nov 25, 2008 | 10:50 PM
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people should stop listing the phantom grip as an LSD option.. they are worthless. If you want to know with 100% certainty, you should just just pop an axle out and see if there is a pin down the center of the diff. if there isnt, then you have lsd. if there is, then you dont. problem solved.
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