NC280z Posted December 23, 2019 Report Share Posted December 23, 2019 Good evening all, I'm fighting an oil pan leak that's been a constant issue with my '75 280z for the past few years. Last weekend I dropped the pan, cleaned the pan and block mating surface, checked the pan for dimples (none found) and re-installed a Fel-Pro gasket. Today I noticed that the passenger side gasket corner near the rear of the block is weeping a very small amount of oil. I'm using the pan reinforcing strips and torqued the bolts to 7 ft-lbs in a star pattern to avoid dimpling the pan, and the only sealant I used was Permatex gasket tack to mount the gasket to the pan, the surface mounting to the block was left dry. Oil pressure is at the normal rating idle/driving, and PCV system components have all been replaced so I don't think the oil system is being over-pressurized. I've always had a small drip from this corner, and previously thought it was a rear main seal. I installed a new Nissan rear main seal about 3 years ago, and the side seals were replaced around 5 years ago when I rebuilt the engine. Does anyone have tips/advice for getting this thing to seal? Right now the front of my car is raised and the gasket will weep oil, so I'm guessing this is strictly a gasket issue. Would side seals or the rear main leak without the engine running? The drip is not a large amount of oil, but I'd like to not have any leakage if possible. Any advice will be greatly appreciated! Quote Link to comment
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