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Topic: Rear end oil leak

in Forum: C3 Driveline Components


Rear end oil leak

Posted: 11/13/02 10:43pm Message 1 of 18
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Bemus Point, NY - USA
Joined: 10/6/2002
Posts: 10
Vette(s): 1971 Stingray coupe. 350 engine,270 HP, automatic, Blue
I just changed the oil and additive in the rear end on my '71 and refilled it to the proper level. Now I have a leak but not from the drain hole. It seems to be coming from where the leaf spring in attached to the rear end housing. Is there a gasket there or is there a vent tube somewhere that may be causing this leak? It didn't leak before but now it does. |headscratch|
Thanks |saluteflag|


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Rear end oil leak

Posted: 11/13/02 11:38pm Message 2 of 18
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Welcome to the forum |thumb| Are you tslking sabout where the bolts go through the spring bottom mounting plate into the spring? If so, did you torque those bolts at all? Sounds like you have a crack in the rearend. |sad|


Rear end oil leak

Posted: 11/14/02 12:01am Message 3 of 18
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Bemus Point, NY - USA
Joined: 10/6/2002
Posts: 10
Vette(s): 1971 Stingray coupe. 350 engine,270 HP, automatic, Blue
Thanks for the welcome. Where I'm talking about is the bottom of the spring plate where it fastens into the rearend, I think this is right, according to a diagramed picture. I did not torque these bolts as I didn't touch them. Is there any vent tube on the rearend?
Thanks


Rear end oil leak

Posted: 11/14/02 12:55am Message 4 of 18
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Yes there is a vent "hole" and filler tube on the rears. On my 82 the filler hole is on the right side, and vent hole on the top. If you didn't replace anything back there, you might have a cracked case. |sad|

|UPDATED|11/14/2002 12:55:36 AM|/UPDATED|



Rear end oil leak

Posted: 11/14/02 8:43am Message 5 of 18
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Bemus Point, NY - USA
Joined: 10/6/2002
Posts: 10
Vette(s): 1971 Stingray coupe. 350 engine,270 HP, automatic, Blue
OK, then that would explain why there wasn't much oil that I took out when I changed it. I'll have to take a better look and see what's going on. Thanks


Rear end oil leak

Posted: 11/14/02 4:57pm Message 6 of 18
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Do you think your case is cracked? Let us know how you make out.


Rear end oil leak

Posted: 11/14/02 10:39pm Message 7 of 18
Former Member
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Bemus Point, NY - USA
Joined: 10/6/2002
Posts: 10
Vette(s): 1971 Stingray coupe. 350 engine,270 HP, automatic, Blue
I drove the car today for about 20 miles and cleaned the rearend and surrounding area with kerosene. Hosed it off and so far no oil leak after 11 hours of sitting. Don't know what to think now. |headscratch|


Rear end oil leak

Posted: 11/15/02 8:43am Message 8 of 18
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Is it possible tht what you saw was just excess dripping down the rear from when you filled it up. That's what it sounds like to me.


Rear end oil leak

Posted: 11/15/02 2:34pm Message 9 of 18
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Bemus Point, NY - USA
Joined: 10/6/2002
Posts: 10
Vette(s): 1971 Stingray coupe. 350 engine,270 HP, automatic, Blue
Maybe that was where it was coming from but the area around the plug was clean. Anyway still no leak so I hope whatever happened continues to. Thanks for your input, appreciated!
Gary |thumb|


Rear end oil leak

Posted: 11/17/02 8:13am Message 10 of 18
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|QUOTE|Dietzy said: Maybe that was where it was coming from but the area around the plug was clean. Anyway still no leak so I hope whatever happened continues to. Thanks for your input, appreciated!
Gary |thumb||/QUOTE|

Well them I would suspect the side yoke seals. Is that area clean? If it is leaking from there while you are driving, it will spray everywhere.


in Forum: C3 Driveline Components


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