Big oil leaks

[hksdrift240]

My engine leaks a good bit of oil. Part of it seems to be the front main seal cause there is oil all over stuff thats inline with the pullies, along with the alternator. And the other half is the oil pan...there is a drop of oil hanging from some of the bolts. The valve cover was leaking, but i fixed that. Im thinking about removing the engine and replacing the seals and degreasing the whole motor and engine compartment (theres oil on pretty much everything, even some on the side of the battery. I just know the oil pan will be a pain to seal with the engine in the car. I think it may still even have the original timing chain. If i did remove it, I was thinking just unbolt the manual transmission and leave it in the car (Ive taken it out and had it rebuilt already about 1k miles ago) and slide the motor forward and out. The motor has about 166k miles on it, and uses/ leaks about a quart every 300 or so miles. I do see it smoke from time to time but not very often, so im thinking its leaking a good bit goin down the road too. I checked the compression and it was (from the front of engine) 140, 130, 135, 130 with the motor hot. So what is ya'lls thoughts?

[sx moneypit]

There is a small o-ring type seal behind the timing cover that is bad about leaking on KA DE engines.It will make it look like the front crank seal and oil pan are leaking.I think i would just pull the engine and freshen it up(rings,rod and mains)and new gaskets and seals of course.

[hksdrift240]

well, i dont really want to spend the money rebuilding it. I did another compression test today with all the plugs out and the engine hot, and got 185 on the front 3 and 190 on the rear cylinder. (on the first test, I only took one out at a time).

[sx moneypit]

Whatever you choose to do i would at least replace the timing chains and guides.