It got a bit breezy here so I went to roll the car in the garage. Moved the car in and noticed the a big patch of the floor dry soaked in gear lube. I just filled the rear dif yesturday... looks like most of it came right back out what am I supposed to do? That plug doesn't seem to plug **** up like its supposd to...? I have school in the morning, dif better not be empty

 

Hmm.... well my differential case is cracked right next to the fill bolt/plug. I don't think it will leak anything other than what is over the fill line (was jacked up when I filled it, so when I put it back down, was probably over full).

Hopefuly thats all it will turn out to be. I'll drive it morrow morning and listen for whining i guess...

 

you may have cracked the case when you tightened the fill bolt. I have found that air conditioner fitting sealer washers thingys work really well for oil drain plug seals too. if that is what is leaking... perhaps a large one of those to fit the diff hole would be good.

 

Thats an idea, guess I'll see how much gearlube spits out when im driving... :/

 

if you drive it with a crack... when the engine is running and the wheels are turning won't it all shoot out of the crack anyway? I had a fun experience similar to this once...

 

Clean if off really well with carburettor cleaner, and then cover over the crack with JB Weld. There's no pressure in the diff, so you won't need anything fancy.

 

JB Weld is awesome **** The only catch is that you will have to let it sit at absolute minimum of 12 hours to really work, so If you pick some up on the way home from school, get your *** on it right after, you'll be okay. just remember to clean it well, as nopistons said.

 

JB now has "5-minute" Weld, so you'll be back on the road in no time. I'd give it an hour, just to be safe, though.

 

Any idea if it works as well as the regular stuff? I know for a fact that people use the regular stuff to repair engine blocks, so I know that it would hold for a diff. crack

 

Meh, guess who just got up (so much for this summer school ****)

I'm going to go out and buy some of that 5 min JB weld stuff. I have to be at work at 5:30 tonight, so hopefuly I can give it three hours that way...

Hope I sdon't pew all that lube out and lock the dif on my way to the hardware store :/

 

well, thats done... JB KWIK stuff. I ran the car idling in 1st gear for a few minutes on the jack stands to see if anythign would leak out, nothing yet. Maybe I'll get lucky...

 

Damnit still leaking, looks to be from the plug this time instead of the crack thoguh

 

In my experience , the JB quick weld doesnt work nearly as well as the regular stuff. It doesnt seem as stong, and it seems to melt back into a goo when exposed to even moderately high temperatures. Try using the regular JB weld, and wrap the threads of the plug in teflon tape before re-inserting. Im assuming this is all temporary though, until you can get a new diff?

 

Another possibility as to why the JB didn't work as well as it should is the crack flexing under load. I guess a redneck way of doing this would be to drill two holes in the diff tap them then bolt a piece of steel across the crack then JB weld it. Another way of taking care of this is to have an exhaust shop or a buddy who can weld, weld up the crack then weld a plate over the crack to shore it up. then get busy saving to get another diff.

 

title updated