2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

best choice for a rear diff?

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Old Feb 17, 2007 | 09:26 AM
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mmm doritos
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From: lancaster PA
Question best choice for a rear diff?

hey i was wondering what kinda diff you guys are running in your TII's i upgraded to a huge turbo and i plan on putting down around 400 whp and i dont think the stock rear has a chance when i launch it at the track with slick's on.. whats the best rear i can get without spending like 1500$
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Old Feb 17, 2007 | 09:34 AM
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There are people out there running fast times with big horsepower running the stock T2 clutch type diff. Even some 3rd gen guys see it as an upgrade. I think your halfshafts will go before your diff. If you want to upgrade there is a few companies that sell LSD's. I think Cusco, Kaaz and ATS just to name a few.
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Old Feb 17, 2007 | 09:38 AM
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^^ yup. you can also rebuild your T2 diff when it wears out with parts from mazdatrix.

TR
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Old Feb 17, 2007 | 11:03 AM
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oh really? i thought you couldnt rebuild it once it wears out...mines been giving me trouble..it dosent always lock up and spin both tires it try's to pull a one legger and then if i try to do a doughnut it wont do it cause both wheels wont spin..so im assuming the clutches are worn out
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Old Feb 17, 2007 | 11:10 AM
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You have an s4, right? If so you have a clutch-type diff which is rebuildable. Its the s5 viscous diffs that you can't rebuild. If you are doing peg-leg burnouts then it probably needs to be rebuilt.
The rebuild parts are at the bottom of this page: http://mazdatrix.com/G8LSD.HTM You can also change how strongly it locks up by using different thickness plates, which are also sold on that page.
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Old Feb 17, 2007 | 11:11 AM
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Mine started to do the same thing. I just swapped it out with a known good one.


I plan on getting the blown one rebuilt at some point.
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Old Feb 17, 2007 | 11:45 AM
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yeah i have an s4 thanx for the link's im gonna go buy the parts now....thanks again for all the help guy's
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Old Feb 17, 2007 | 11:48 AM
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how do i know if i have the lsd with inside pin's or the one with outside pins? acording to that link there are 2 differnt types
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Old Feb 17, 2007 | 11:53 AM
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I would call mazdatirx on the parts you need. You also need special tools to do it right or you can take it to a shop to have it done.
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Old Feb 17, 2007 | 01:55 PM
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There is a dial for setting the lash that a transmission/rearend shop can do for you if you can handle the physical work. Should cut down on your total cost. (usually 4x4 shops are pro's at it since they are always changing gearing/installing lockers etc)
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Old Feb 17, 2007 | 02:57 PM
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From: lancaster PA
yeah i'll take it out myself then bring it to the tranny shop up the street. i know they fix rears also.
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