1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Diff Housing Gasket?

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Old 06-13-07, 05:54 PM
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Diff Housing Gasket?

My rear diff is looking might oily, and prob leaks about a quarter sized drop of diff fluid in the driveway a day. It's more an annoyance than anything else. Is this a common Problem on RX-7s? Do I need a new gasket? I haven't tried to tighten the bolts on it yet, that may be the issue. Kinda annoying that you have to removed the rear U joint to take apart the diff housing, it doesn't have a cover on the rear of the housing like I'm used to seeing.
Old 06-13-07, 05:58 PM
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there is no gasket. mazda uses silicone to seal the pumpkin.. the bolts work loose from vibration so try tightening them first since your lazy
Old 06-13-07, 06:24 PM
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Yep...I just used some black silicone to seal mine...no leaks.

Rich
Old 06-13-07, 06:26 PM
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Originally Posted by '84-12A-GSL
Kinda annoying that you have to removed the rear U joint to take apart the diff housing, it doesn't have a cover on the rear of the housing like I'm used to seeing.

U Joint does not come apart like you are used to eather. Just four bolts with or without nuts.
Old 06-13-07, 06:31 PM
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With or without nuts?...how does it come apart without nuts? haha If I remove the drive shaft, and split the diff, im not gonna frig anything up am I? Like as in I take it apart, and something has to go back in in the right order, and or the diff fall onto the ground or something whack.
Old 06-13-07, 07:09 PM
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Some years the Bolts thread into the flange, and other years have nuts on the back.

You will not pull the diff with out removing the brakes and axles. Give it a quick tighten first then do the 3 hours work if you need to.
Old 06-14-07, 08:21 PM
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Wow, I checked the bolts today, and I could tighten them a couple of turns by hand, that's how loose some of them were! I gave em all a good tightening, I believe this should fix my problem. Thanks
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