Oil leak - Team Camaro Tech
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post #1 of 6 (permalink) Old Apr 10th, 04, 07:33 AM Thread Starter
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Lorne
 
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After reinstalling the 327 I have noticed a small amount of oil coming from the drain hole in the inspection/dust cover on the front of the trans. It is definitely engine not trans oil. We didnt change the rear main oil seal as it wasnt leaking, just oil pan gaskets. I cant think of anything else that would leak into this area of the cover. How should I check to make sure I know where the leak is for sure? Im guessing if it is the seal we would be best to pull the engine/trans as we have no front clip on yet so it is easy. Tips on oil seal replacement appreciated, I have the service manual to go by.
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post #2 of 6 (permalink) Old Apr 11th, 04, 03:42 PM
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Check the oil pressure switch on top of block back, just to the driverís side. It is under distributor. The oil could leak from there.
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post #3 of 6 (permalink) Old Apr 11th, 04, 07:37 PM Thread Starter
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THanks will do.
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post #4 of 6 (permalink) Old Apr 12th, 04, 02:07 AM
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There are a couple more places for oil to leak from: cam bearing plug, the oil galley plugs(3), rear crankshaft seal, and oil pan gasket.

Changing the rear main seal isan't too hard, just alittle more work.

Since you're planning on removing it from the car, work will be easier.

Here ya go:
1. Drain the oil.
2. Remove the starter.
3. Remove the pan.
4. Remove the oil pump and its shaft held in place by its bushing.
5. Remove the rear main bearing cap.
6. Replace the seal half in the cap, make sure the lip points to the crankcase. Look at the block seal half to be certain of seal install.
7. Push on one side of the block seal half, roll it out of the block.
8. Lube the seal backside with engine oil and roll it into place, make sure the lip points to the inside.
9. Clean the bearing cap mating surface on both the block and the cap with lacquer thinner or Brakleen.
10. Apply a very small diameter bead of RTV, ie, 2-3 mm, from the seal installation tang out to the oil pan gasket. This will seal the metal mating surfaces from oil seeping out.
11. Reinstall Step 1 through 6.

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post #5 of 6 (permalink) Old Apr 12th, 04, 06:12 AM
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Also check the rear intake manifold to block seal, and check for a leak at the rear of a valve cover.


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post #6 of 6 (permalink) Old Apr 12th, 04, 06:41 AM Thread Starter
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Lorne
 
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Thanks for all tips. Hopefully it isnt the rear main seal, however if it is I now have some good instructions to replace it. What torque are the rear main cap bolts?
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