dammit.... rear main seal leak
12-11-2008, 07:24 PM
#1
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dammit.... rear main seal leak 
not looking foward to this... who else has changed theirs? i researched and came up with these part numbers, do they look right to you guys?Rear Main Seal GM # - 12585671
Rear Main Plate GM# - 12572014
Rear Main Plate Gasket GM# - 12574293
Rear Main Plate Bolts GM# - 12556127
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12-11-2008, 11:36 PM
#12
I'm in the middle of replacing my clutch and after taking of the flywheel bolts they had oil on them, I guess I need a new seal myself, it looks simple to do but any more info will be great...
12-12-2008, 09:17 AM
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so ive been reading about this all morning, and i want to check behind the intake mani to see if anything might be leaking from there. is there a guide on how to remove it, ive never taken it off before.
12-12-2008, 10:53 AM
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12-12-2008, 11:14 AM
#18
But I wouldn't suspect that as a source of an oil leak. Back in the day with SBC's and LT1's with wet intakes and rtv sealant were known to leak, but LS1's have dry intakes and use a valley plate with a gasket. You can still feel around the edge of the valley plate for a leak. I would check your RMS (which you did already), valve cover gaskets) and oil pan.
12-12-2008, 12:45 PM
#19
thomasian, if you have any questions... call me! lol. Id hate to see you break an intake bolt and have to pull the head. Ive always got my phone on.
I just dont see why you need to pull the intake, unless your swapping them. Just stick your hand back there and see if the oil sending unit is leaking. But since you've never had the intake off, it shouldnt be. Just sometimes people hit it when they are messing with the intake.
Install the rear main the normal way.. not inside out. Put a little oil around it with your finger so it slides on nicely, make sure its centered, and your good.
You dont need to drain the oil, but if its time to service... would be easy to do since the car is up.
I just dont see why you need to pull the intake, unless your swapping them. Just stick your hand back there and see if the oil sending unit is leaking. But since you've never had the intake off, it shouldnt be. Just sometimes people hit it when they are messing with the intake.
Install the rear main the normal way.. not inside out. Put a little oil around it with your finger so it slides on nicely, make sure its centered, and your good.
You dont need to drain the oil, but if its time to service... would be easy to do since the car is up.
12-12-2008, 12:57 PM
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The link provided is a very good write up on how to swap to an LS6 manifold, which you need to do! But I wouldn't suspect that as a source of an oil leak. Back in the day with SBC's and LT1's with wet intakes and rtv sealant were known to leak, but LS1's have dry intakes and use a valley plate with a gasket. You can still feel around the edge of the valley plate for a leak. I would check your RMS (which you did already), valve cover gaskets) and oil pan.
But I wouldn't suspect that as a source of an oil leak. Back in the day with SBC's and LT1's with wet intakes and rtv sealant were known to leak, but LS1's have dry intakes and use a valley plate with a gasket. You can still feel around the edge of the valley plate for a leak. I would check your RMS (which you did already), valve cover gaskets) and oil pan.thomasian, if you have any questions... call me! lol. Id hate to see you break an intake bolt and have to pull the head. Ive always got my phone on.
I just dont see why you need to pull the intake, unless your swapping them. Just stick your hand back there and see if the oil sending unit is leaking. But since you've never had the intake off, it shouldnt be. Just sometimes people hit it when they are messing with the intake.
Install the rear main the normal way.. not inside out. Put a little oil around it with your finger so it slides on nicely, make sure its centered, and your good.
You dont need to drain the oil, but if its time to service... would be easy to do since the car is up.
I just dont see why you need to pull the intake, unless your swapping them. Just stick your hand back there and see if the oil sending unit is leaking. But since you've never had the intake off, it shouldnt be. Just sometimes people hit it when they are messing with the intake.
Install the rear main the normal way.. not inside out. Put a little oil around it with your finger so it slides on nicely, make sure its centered, and your good.
You dont need to drain the oil, but if its time to service... would be easy to do since the car is up.
im going to wipe everything real well and then feel around the back after i take it for a spin.