Ok I have a 94 Z with about 25k on a rebuilt engine. Now about 10k ago I noticed a minor oil leak on the front timing cover where the famos opti sits so thinking that the seal may have gone bad I replaced that particular one because that's where the oil seemed to be coming from. I don't drive the car but maybe 2-3 times a month. Drove the car and only a few miles on the car I noticed my leak was back this time I decided to replace all of the seals and gaskets. I purchased a felpro kit and changed all of the seals and gaskets and I put a nice bead of silicon around the timing cover gasket just for extra insurance. A few miles later I saw that my leak was back!!! This time I took the car into a local shop and they explaind that I needed a sleeve over the crank shaft because that mey be where my problem is. I paid them $240 to sleeve the crank shaft pullie because I want this leak to go away. Not the case! I cleaned up the oil spattered engine and still had my oil leak. Is there another place that I missed that may leak in the same area but not neccasay the gasket or seals?!? This is very frustrating!!! Any help would be greatly appreciated!! Sorry for the long post but this leak is pissing me off to no end!!!

 

Probably the waterpump shaft seal. Do a search for correct installation.

 

C'mon bro it's not rocket science!! I've done plenty but if there is a sticky on how to install seals and gaskets I'm all eyes.