oil leak from the back of the crankshaft?
oil leak from the back of the crankshaft? Anybody with an automatic trans set up ever seen oil leaking around what appears to be a casting (looks like a freeze plug you would see in a head) plug that is in the back of the crankshaft?
I had oil puddled in this spot when I pulled the trans/torque converter back (the snout of the converter slides up into the back of the crank opening) - and I have oil spray strewn out from the center all over the flexplate.
I had oil puddled in this spot when I pulled the trans/torque converter back (the snout of the converter slides up into the back of the crank opening) - and I have oil spray strewn out from the center all over the flexplate.
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Yep there is a small plug in the back of the crank closing the hole in the center. Yours is either loose or damaged in some way. Would have been nice if gm would have done something a little more durable for that hole. It doesn't take much to mess with it.
I wonder if I should try to knock it out and replace it or just clean it well and put some sealant around it?????
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Well if you hit on it, it is going to drop into the oil pan. So don't do that. I'm not sure what to suggest. I guess you could carefully clean it and see why its leaking. Maybe put a bead of silicone around the edge of it?
Best fix would be to know it out and replace it but like I said if you push on it, it will drop into the oil pan.
Best fix would be to know it out and replace it but like I said if you push on it, it will drop into the oil pan.
Well if you hit on it, it is going to drop into the oil pan. So don't do that. I'm not sure what to suggest. I guess you could carefully clean it and see why its leaking. Maybe put a bead of silicone around the edge of it?
Best fix would be to know it out and replace it but like I said if you push on it, it will drop into the oil pan.
Best fix would be to know it out and replace it but like I said if you push on it, it will drop into the oil pan.
Did some research and the truck engines are not drilled and do not have this plug. Question, did GM change the drilled crank design or do all ls1's have the drilled crank? All I have found so far is that this drilled crank started in 1997, no end date.
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Verdad Gallardo I called the local engine rebuilder too and he told me something interesting. The AERA (automotive engine rebuilder association) has a TSB out - 2267 in think) that addresses the "high performance LS series of GM engines that may develop an oil leak in this area. Often mistaked for a failed rear main seal.
The plug is 27.79 mm and must be installed 1.228-1.240 in the rear.
Also the rear cover is known to have porosity leading to leaks that can be sealed with RTV or replaced.
The plug is 27.79 mm and must be installed 1.228-1.240 in the rear.
Also the rear cover is known to have porosity leading to leaks that can be sealed with RTV or replaced.
