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.

 

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

 

Yep...I just used some black silicone to seal mine...no leaks.

Rich

 

U Joint does not come apart like you are used to eather. Just four bolts with or without nuts.

 

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.

 

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.

 

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